MATLAB: How to detect objects and distinguish them from each other

color detectionComputer Vision Toolboxdigital image processingedge detectionimage labelingImage Processing Toolboxmotion detectionobject detectiontracking

They can be in different colors, or maybe it's better to distinguish them bye edge detection, or some thing else which I need you help me to use a suitable method. Purpose is to detect objects and find their movement if exist and estimate their direction and velocity. Thank you

Best Answer

Please try out my image segmentation demos and color segmentation demos: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

To do object tracking across different images or video frames, you can use the Computer Vision System Toolbox

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MATLAB: Setting frames from mid video

Daevin - according to videoreader.read, it is possible to read in whichever frame that you wish

video = read(obj,index) reads only the specified frames. index can be a single number or a two-element array representing an index range of the video stream.

If you are interested only in the 300 frames starting at 3701, then your above code could be modified as

 nFrames   = 300;  %Clip1.NumberOfFrames;
 vidHeight = Clip1.Height;
 vidWidth  = Clip1.Width;
 %%Movie Structure
 mov(1:nFrames) = ...
    struct('cdata',zeros(vidHeight,vidWidth, 3,'uint8'),'colormap',[]);
 %%Reading frames
 for k = 1:nFrames
    mov(k).cdata = read(Clip1,3700+k);
 end

Try the above and see what happens!

EDIT

Corrected the numFrames to nFrames as per Daevin's comment below.

MATLAB: How to read audio signal and video frames from an .avi file using mmreader function in matlab

mmreader() cannot be used to read audio.

The Computer Vision Toolbox has the only Mathworks-provided routine that can read audio and video simultaneously. Otherwise you need to read them separately and match them up by time.

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MATLAB: Setting frames from mid video

MATLAB: How to read audio signal and video frames from an .avi file using mmreader function in matlab

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