HOw to apply feature extraction algorithms on individual frames from a video for gait analysis?

I have extracted individual frames from gait analysis video. Now how can i apply feature extraction algorithms to each frames sequentially.

Answer 1

[Image Analyst]

Pass in the frame (image) into your feature extraction function that you wrote:

% Allocate space for 23 features:
myFeatures = zeros(numberOfFrames, 23);
% Go through frame by frame extracting and saving features.
for f = 1 : numberOfFrames
   thisFrame = read(videoReader, f);
   myFeatures(f, :) = GetFeatures(thisFrame);
end

[Besly Thomas]

Thanks for your reply...How can I draw bounding box over the blob in the binary image and how to measure height: width ratio of the bounding box..

[Image Analyst]

Put "hold on" and then call rectangle() with the bounding box rectangle, or plot() with the 5 corners of the box.

hold on;
rectangle('Position', [xLeft, yTop, width, height]);

or

xBox = [x1,x2,x2,x1,x1];
yBox = [y1,y1,y2,y2,y1];
hold on;
plot(xBox, yBox);