there are 66 video frames in video11.avi .... i wana save each video frames in folder videoframes........What is problem over there ? this code is not proper saving each video frame in specific folder

obj = mmreader('video11.avi');
numFrames = get(readerobj, 'NumberOfFrames');
for k = 1 : numFrames  %fill in the appropriate number
    this_frame = read(obj, k);
    figure,imshow(this_frame)
    title(sprintf('Frame #%d', k))
    baseFileName ='this_frame.jpg';
    folder = 'C:\Users\Moniba Ghafoor\Documents\MATLAB\videoframes';
    fullFileName = fullfile(folder, baseFileName);
    imwrite(this_frame,fullFileName);

end

Answer 1

[Walter Roberson]

baseFileName = sprintf('this_frame_%03d.jpg', k);

[moniba qureshi]

I want to exract facial features of subimages... what should i do ?

for k= 1 : numberOfPeople
s = regionprops(labeledImage, 'BoundingBox');
rectangle('Position', s(k).BoundingBox);
subimage = this_frame(round(s(k).BoundingBox(2):s(k).BoundingBox(2)+s(k).BoundingBox(4)),round(s(k).BoundingBox(1):s(k).BoundingBox(1)+s(k).BoundingBox(3)));
%figure,imshow(subimage);
    baseFileName =sprintf('Frame %4.4d.png', k);
    folder = 'C:\Users\Moniba Ghafoor\Documents\MATLAB\faces';
    fullFileName = fullfile(folder, baseFileName);
    imwrite(subimage,fullFileName);
end

[Image Analyst]

There is a "Viola Jones" face detector in the Computer Vision System Toolbox.

[moniba qureshi]

im using matlab matlab 7.8.0(R2009a) ......... can i use vision system toolbox?

[Image Analyst]

I don't think toolboxes are sold for older versions. If you want to add a new toolbox to your collection, then I think you'll need to upgrade to the current version. Anyway, even if they did, I don't believe that toolbox supported that version since I think it was released after March 2009, though I'm not sure.