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# Figure to play and analyze videos with custom plots on top 1.0

Date Added: April 08, 2013  |  Visits: 199

VIDEOFIG(NUM_FRAMES, @REDRAW_FUNC) creates a figure with a horizontal scrollbar and shortcuts to scroll automatically. The scroll range is 1 to NUM_FRAMES. The function REDRAW_FUNC(F) is called to redraw at scroll position F (for example, REDRAW_FUNC can show the frame F of a video).This can be used not only to play and analyze standard videos, but it also lets you place any custom Matlab plots and graphics on top.Jiro posted a great example on the Pick of the Week blog, along with a nice GIF animation so you can see it in motion:http://blogs.mathworks.com/pick/2010/12/10...sed-processing/ EXAMPLE 1Place this in a file called "redraw.m": function redraw(frame) imshow(['AT3_1m4_' num2str(frame, '%02.0f') '.tif']) end Then from a script or the command line, call: videofig(10, @redraw); redraw(1) The images "AT3_1m4_01.tif" ... "AT3_1m4_10.tif" are part of the ImageProcessing Toolbox and there's no need to download them elsewhere. EXAMPLE 2Change the redraw function to visualize the contour of a single cell: function redraw(frame) im = imread(['AT3_1m4_' num2str(frame, '%02.0f') '.tif']); slice = im(210:310, 210:340); [ys, xs] = find(slice < 50 | slice > 100); pos = 210 + median([xs, ys]); siz = 3.5 * std([xs, ys]); imshow(im), hold on rectangle('Position',[pos - siz/2, siz], 'EdgeColor','g', 'Curvature',[1, 1]) hold off end The keyboard shortcuts are: Enter (Return) -- play/pause video (25 frames-per-second default). Backspace -- play/pause video 5 times slower. Right/left arrow keys -- advance/go back one frame. Page down/page up -- advance/go back 30 frames. Home/end -- go to first/last frame of video. See HELP VIDEOFIG for more options.

 Requirements: No special requirements Platforms: Matlab Keyword: Contour,  Findslice,  Im210310,  Imread,  Medianxs,  Single,  Slice,  Stdxs,  Visualize Users rating: 0/10