MediaWiki API result
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"*": "<tr><td colspan=\"2\" class=\"diff-lineno\" id=\"mw-diff-left-l1\" >Line 1:</td>\n<td colspan=\"2\" class=\"diff-lineno\">Line 1:</td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div><del class=\"diffchange diffchange-inline\">'''MediaWiki has been successfully installed.'''</del></div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">== Introduction ==</ins></div></td></tr>\n<tr><td class='diff-marker'>\u00a0</td><td class='diff-context'></td><td class='diff-marker'>\u00a0</td><td class='diff-context'></td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div><del class=\"diffchange diffchange-inline\">Consult the [//meta.wikimedia</del>.<del class=\"diffchange diffchange-inline\">org/wiki/Help:Contents User's Guide] </del>for information on <del class=\"diffchange diffchange-inline\">using the wiki software</del>.</div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">This toolbox contains a series of Matlab functions for georectifying highly oblique digital images</ins>. <ins class=\"diffchange diffchange-inline\">This is useful in oceanography </ins>for <ins class=\"diffchange diffchange-inline\">obtaining quantitative</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>information on <ins class=\"diffchange diffchange-inline\">sea-surface patterns such as those induced by internal waves, fronts or sea-ice</ins>. \u00a0</div></td></tr>\n<tr><td class='diff-marker'>\u00a0</td><td class='diff-context'></td><td class='diff-marker'>\u00a0</td><td class='diff-context'></td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div>== <del class=\"diffchange diffchange-inline\">Getting started </del>==</div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Although this toobox was initially developed to georectify geophysical images it can be used just as well for rectifying laboratory images. The following images show examples of such image rectifications.</ins></div></td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div>* <del class=\"diffchange diffchange-inline\">[</del>//www.<del class=\"diffchange diffchange-inline\">mediawiki</del>.<del class=\"diffchange diffchange-inline\">org</del>/<del class=\"diffchange diffchange-inline\">wiki</del>/<del class=\"diffchange diffchange-inline\">Manual</del>:<del class=\"diffchange diffchange-inline\">Configuration_settings Configuration settings list</del>]</div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">{|</ins></div></td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div><del class=\"diffchange diffchange-inline\">* </del>[//<del class=\"diffchange diffchange-inline\">www</del>.<del class=\"diffchange diffchange-inline\">mediawiki</del>.<del class=\"diffchange diffchange-inline\">org</del>/<del class=\"diffchange diffchange-inline\">wiki</del>/<del class=\"diffchange diffchange-inline\">Manual</del>:<del class=\"diffchange diffchange-inline\">FAQ MediaWiki FAQ]</del></div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|[[File:Massif1.png|thumb|left|Example of a geophysical photo showing sea-ice distribution in the St. Lawrence Estuary.]] </ins></div></td></tr>\n<tr><td class='diff-marker'>\u2212</td><td class='diff-deletedline'><div><del class=\"diffchange diffchange-inline\">* [https</del>://<del class=\"diffchange diffchange-inline\">lists</del>.<del class=\"diffchange diffchange-inline\">wikimedia</del>.<del class=\"diffchange diffchange-inline\">org</del>/<del class=\"diffchange diffchange-inline\">mailman</del>/<del class=\"diffchange diffchange-inline\">listinfo</del>/<del class=\"diffchange diffchange-inline\">mediawiki</del>-<del class=\"diffchange diffchange-inline\">announce MediaWiki release mailing list</del>]</div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|[[File:Massif2.png|thumb|left|Same as previous photo once georectified.]] </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|[[File:Lab1.png|thumb|left|Example of a laboratory basin photo. ]] </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|[[File:Lab2.png|thumb|left|Same as previous once georectified.]] </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|}</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>== <ins class=\"diffchange diffchange-inline\">How to get the package </ins>==</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Click on this link to download the package: [[Media:g_rect_package_1.0.zip|g_rect_package_1.0]].</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Once expanded the <tt>g_rect</tt> package is organized as follow:</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"><tt></ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">* g_rect_package</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">** src (the source codes)</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">*** g_rect (contains the main georectification functions)</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>*<ins class=\"diffchange diffchange-inline\">** g_calib (contains camera calibration functions)</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">*** g_stabilize (contains image stabilization functions)</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">** Examples</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">*** Field (a field example)</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">*** Lab (a lab example)</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"></tt></ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">The main georectification functions are found within the <tt>g_rect</tt> directory. The other two directories are for more</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">advanced processing if the camera needs to be calibrated (<tt>g_calib</tt>) or if you need to stabilize (i.e. removing small movements </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">between successive images) a series of images (<tt>g_stabilize</tt>). You may not need to play at all with these.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">== g_rect: Quick Start ==</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">For a quick start let's only play with the main function called <tt>g_rect.m</tt> found under the <tt>g_rect</tt> directory. First you should set this directory into your Matlab path (File -> Set Path). </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Then go with Matlab into the directory Examples/Field. You will find there an image (IMG_6614.JPG) and a file named <tt>parameters.dat</tt>.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">This is the main input parameter file that you need to edit for a given image or for a given series of images. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">This input parameter file looks like this:</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">=== Input file: parameters.dat ===</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"><tt></ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % I/O information</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> imgFname\u00a0 \u00a0 \u00a0 =\u00a0 'IMG_6614.JPG';\u00a0 % This is the reference image</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> firstImgFname =\u00a0 'IMG_6614.JPG';\u00a0 % This is just to indicate the first image of a sequence </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> lastImgFname\u00a0 =\u00a0 'IMG_6614.JPG'; % This is just to indicate the last image of a sequence </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> outputFname\u00a0 =\u00a0 'g_rect.mat';\u00a0 \u00a0 \u00a0 % This is the output filename where the new coordinates will be stored.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % Field or lab case situation.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % Set field = true for field situation and field = false for lab situation.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % Lab situation does not expect to work with latitude and longitude but simply with meters.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> field = true; </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">\u00a0 </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % Camera position</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % lat/lon for field situation</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % meter for lab situation</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> LON0 = -70.6010167;</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> LAT0 =\u00a0 47.2713000; </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">\u00a0 </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % Offset from center of the principal point (generally zero)</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> ic = 0;</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> jc = 0;</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % Parameters</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> hfov =\u00a0 \u00a0 \u00a0 45.0;\u00a0 \u00a0 % Field of view of the camera</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> lambda =\u00a0 \u00a0 2;\u00a0 \u00a0 \u00a0 \u00a0 % Dip angle above vertical (e.g. straight down = 90, horizontal = 0)</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> phi =\u00a0 \u00a0 \u00a0 0.0;\u00a0 \u00a0 \u00a0 % Tilt angle (generally close to 0)</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> H =\u00a0 \u00a0 \u00a0 \u00a0 720;\u00a0 \u00a0 \u00a0 % Camera altitude</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> theta =\u00a0 \u00a0 70.0;\u00a0 \u00a0 % View angle clockwise from North (e.g. straight East = 90)</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % Uncertainty in parameters. Set the uncertainty to 0.0 for fixed parameters.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> dhfov =\u00a0 \u00a0 20.0; </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> dlambda =\u00a0 10.0;</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> dphi =\u00a0 \u00a0 \u00a0 5.0;</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> dH =\u00a0 \u00a0 \u00a0 \u00a0 0.0; </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> dtheta =\u00a0 \u00a0 20.0; </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % Order of the polynomial correction (0, 1 or 2) </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> polyOrder = 1;</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % To save memory calculation can be done in single precision.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % For higher precision set the variable 'precision' to 'double'.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> precision = 'double';</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % Ground Control Points (GCP). </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> % The data must come right after the gcpData = true </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> gcpData = true;</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> 360\u00a0 829\u00a0 -70.561367\u00a0 47.303783</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">\u00a0 54\u00a0 719\u00a0 -70.54500\u00a0 47.335</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">\u00a0 99\u00a0 661\u00a0 -70.505\u00a0 \u00a0 47.375</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> 452\u00a0 641\u00a0 -70.435\u00a0 \u00a0 47.389</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> 429\u00a0 633\u00a0 -70.418\u00a0 \u00a0 47.408</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> 816\u00a0 644\u00a0 -70.393\u00a0 \u00a0 47.368</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"></tt></ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">----</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">This file contains all parameters required to perform a georectification. You can add spaces and comments as you wish within this file. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">One specify format needs however to be respected. The ground control points (gcp) must appear right after the variable <tt>gcpData = true</tt>;</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">These ground control points represent the lon-lat position associated with some image coordinates. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">If you know perfectly some of the camera parameters (e.g. the field of view) you simply have to set the uncertainty of this parameter to zero (e.g. dfov = 0).</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Otherwise, for other parameters with some uncertainty the minimization algorithm will search within the given uncertainty to find the best parameters </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">values that gives a best fit between the image control points once georectified and the ground control points (see Bourgault, 2008, for details). </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">To run the georectification, all you have to do in principle is to edit this file and to type in Matlab <tt>g_rect</tt> at the command line. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">You will then be prompted for the name of the input parameter file (it does not have to be called <tt>parameters.in</tt>). You image will appear</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">with the GCPs as well as a table re-listing all of your parameters. If you're ok with this type <tt>enter</tt>. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">You will then see the algorithm searching the parameter space and will eventually return the result for the set of parameters found. A file will be created, named</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">accoring to the name given in the variable <tt>outputFname</tt>.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">This is the main result file that contain all important variables. The most important matrices created are named <tt>LAT</tt> and <tt>LON</tt>.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">These two matrices have the same size as your original image and provides the latitude and longitude of every associated pixel. You can then</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">make a figure using for example the command <tt>pcolor</tt> (or <tt>m_pcolor</tt> if you use the <tt>m_map</tt> package) with <tt>LON</tt> and <tt>LAT</tt></ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">as the arguments for the position and a third argument for the pixel intensity which could simply be the mean of the RGB channel if you want to reduce</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">a color image to a grayscale image. Fancier color representation could also be done but this is up to you. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">The <tt>g_rect</tt> package works best with the <tt>m_map</tt> package installed.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">== g_calib ==</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Camera calibration could be done if required. All files needed are found in the <tt>g_calib</tt> folder. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">The package comes from this site that you should consult for information on how to perform a camera calibration: http:</ins>//www.<ins class=\"diffchange diffchange-inline\">vision</ins>.<ins class=\"diffchange diffchange-inline\">caltech.edu</ins>/<ins class=\"diffchange diffchange-inline\">bouguetj</ins>/<ins class=\"diffchange diffchange-inline\">calib_doc/</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Essentially, a camera calibration removes distortion associated with a lens as shown by comparing the images below.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">{|</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|[[File</ins>:<ins class=\"diffchange diffchange-inline\">sample_original.jpg|thumb|left|Example of an original image showing obvious distortion. The checkboard should be flat but curvature is seen.]</ins>] \u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|[</ins>[<ins class=\"diffchange diffchange-inline\">File:sample_calibrated.png|thumb|left|The same image once calibrated.]] </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|}</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Note that this step is not always required for two main reasons. Firstly, it could be that the camera and lens you use has little acceptable distortion.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Secondly, the algorithm in <tt>g_rect<</ins>/<ins class=\"diffchange diffchange-inline\">tt> provides a polynomial\u00a0 correction (of order 1 or 2) to the image if you have enough ground control points (it is the variable</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">name <tt>polyOrder<</ins>/<ins class=\"diffchange diffchange-inline\">tt> in the input parameter file). This is an indirect way of correcting for lens distortion that is often acceptable.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">== g_stablilize ==</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Generally, sequences of images are collected from a fixed tripod</ins>. <ins class=\"diffchange diffchange-inline\">For example, you may want to observe the movement of sea-ice over a semi-diurnal cycle at a sample rate</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">of 1 image per minute (roughly 750 images)</ins>. <ins class=\"diffchange diffchange-inline\">If the tripod does not move during the collection then the georectification </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">procedure described above with <tt>g_rect<</ins>/<ins class=\"diffchange diffchange-inline\">tt> only needs to be applied to one image. The coordinate matrices <tt>LAT<</ins>/<ins class=\"diffchange diffchange-inline\">tt> and <tt>LON</tt> can then be applied to all </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">images of the sequence.\u00a0 </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">In practice, the camera moves for many reasons. It may be because you need to replace the batteries, because you touched the camera by mistake, because you need to change </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">a camera setting half-way through the experiment or, if you're outside, because wind gusts induce small but perceptible camera movements. If you don't correct for these </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">movements, the sequence will be jumpy if you make a movie with it. This may lead to inaccurate measurements if you need to compare two frames, say for calculating ice drift velocities.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">To fix this problem you could apply a new georectification to every images that has moved. This is however not practical if, for example, camera movements were randomly induced by wind </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">gusts. In some windy situations, just about every image show small but perceptible camera movements. You don't want to apply the georectification 750 times.\u00a0 </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">This is when camera stabilization becomes very useful. The idea is to choose one reference image, generally the first image of the sequence, and to geometrically transform all other</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">images, for translation, scale and rotation, to match the reference image as close as possible. This step is done before doing the georectification. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">However, for this to work we need to tell the algorithm which parts of the image are not supposed to have moved. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">The algorithm cannot tell by itself whether it is the camera that moved of the ice we are observing.\u00a0 These portions of image are called region of interest (ROI).</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Details of this procedure are described by Farid and Woodward (2007). The Matlab algorithm found in Farid and Woodward (2007) have been adapted here.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">The folder <tt>g_stabilize</tt> contains a series of Matlab functions for performing the image stabilization. However, you need to be familiar with only the following two functions</ins>:</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">=== <tt>g_roi.m</tt> ===</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">This function is a utility that helps you determine region of interest. To use it you simply have to call the function with your reference image filename such as </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> <tt>g_roi('IMG_1.jpg")</tt> </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">and follow the instructions. Essentially, you will be asked to make polygons around regions of interests (roi). These are regions</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">in your image that don't move. Try not to take moving patterns on the water or the sky that has moving clouds. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">This function only puts 1s in ROIs and 0s everywhere else. Once you're done a file names roi.mat is created. The blue and red image below shows</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">the ROI image corresponding to the image #1. This file is then needed by the next function that performs</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">the actual stabilization.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">===<tt>g_stabilize.m</tt> ===</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Once you have created the <tt>roi.mat</tt> file you simply type, in principle, the following command</ins>:</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> <tt>g_stabilize(root_img_name,ext,id_img_ref,id_img_first,id_img_last)</tt></ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">where</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> <tt>root_img_name</tt> is the root of the images name (e.g. <tt>IMG_<</ins>/<ins class=\"diffchange diffchange-inline\">tt>;</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> <tt>ext<</ins>/<ins class=\"diffchange diffchange-inline\">tt> is the images extension (e</ins>.<ins class=\"diffchange diffchange-inline\">g</ins>. <ins class=\"diffchange diffchange-inline\"><tt>'png'<</ins>/<ins class=\"diffchange diffchange-inline\">tt> or <tt>'jpg'<</ins>/<ins class=\"diffchange diffchange-inline\">tt>; </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> <tt>id_img_ref</tt> is the number that identifies the reference image;</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> <tt>id_img_first</tt> is the number of the first image of the sequence you want to stabilize;</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\"> <tt>id_img_last</tt> is the number of the last image of the sequence you want to stabilize; </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">This will recreate a series of images with the same name but with the suffix <tt>_stable</tt> added to your image filename. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">The original images are conserved. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">=== Remark ===</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">Because of rapidly changing light conditions outside, the stabilize algorithm may not work as you would hope. This is because region of interests</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">are often subject to moving cloud shadows that may fool the algorithm. In some cases it may be necessary to filter first you image and to </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">apply equalizers in order to minimize as much as possible such motions. In general, the algorithm does quite a good job. You can appreciate </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">the effect by downloading and comparing <tt>IMG_1.JPG</tt> with <tt>IMG_58.JPG</tt> and <tt>IMG_58_stable.JPG</tt> below. </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">{|</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|[[File:IMG_1.JPG|thumb|left|Example of the first image of a sequence (image #1). All subsequent images can be stabilized using this image as the reference.]] </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|[[File:IMG_58.JPG|thumb|left|Image #58 shows important differences in the view point compared to the first image. It was very windy that day and the tripod moved with wind gusts.]] </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|[[File:roi.png|thumb|left|Region of interest (ROI) needed for the stabilization algorithm. This can be done with the function <tt>g_roi.m<</ins>/<ins class=\"diffchange diffchange-inline\">tt>]] </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|[[File:IMG_58_stable.JPG|thumb|left|Image #58 once stabilized relative to image #1.]] </ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">|}</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div>\u00a0</div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">== References ==</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">* Bourgault (2008), [[Media:Bourgault_2008.pdf|Shore</ins>-<ins class=\"diffchange diffchange-inline\">based photogrammetry of river ice]</ins>]<ins class=\"diffchange diffchange-inline\">, ''Can. J. Civil Eng.''.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">* Bourgault et al (2011), [[Media:Bourgault_et_al_2011a.pdf|Field observations of a large-amplitude internal wavetrain and its reflection off a steep slope]], ''J. Phys. Oceanogr.''</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">* Farid and Woodward (2007), [[Media:Farid_Woodward_2007.pdf|Video stabilization and enhancement]], Unpublished.</ins></div></td></tr>\n<tr><td colspan=\"2\">\u00a0</td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class=\"diffchange diffchange-inline\">* Pawlowicz (2003), [[Media:Pawlowicz_2003.pdf|Quantitative visualization of geophysical flows using low-cost oblique digital time-lapse imaging]], IEEE ''J. Ocean. Eng.''</ins></div></td></tr>\n"
}
}