hi my task is i have to split a video into frames and then the frames should color procssed from RGB to CMY and grouped up to create a negative videp...im getting errors can anyone help me ..??

this is my code

vidobj = VideoReader('viptraffic.avi');
video = read(vidobj);
frameRate = get(vidobj,'FrameRate');
numFrames=vidobj.NumberOfFrames;
n=numFrames;
myVideo=VideoWriter('negative6.avi');
myVideo.FrameRate=30;
open(myVideo);
for i=1:n
        F(i)=getframe;
        img = frame2im(F); 
        img = im2double(img);
        r=img(:,:,1);
        g=img(:,:,2);
        b=img(:,:,3);
        c=1-r;
        m=1-g;
        y=1-b;
        new_image=cat(3,c,m,y);
        writeVideo(myVideo,new_image);
end
close(myVideo);

Answer 1

[Geoff Hayes]

Chandrasekhar - what errors are you observing? Please copy and paste the full error message to your question.

One problem may be how you are reading your frames from the original video. Initially, you use

 video = read(vidobj);

and then in the for loop you use

 F(i)=getframe;

Why not just use read (this all depends on which version of MATLAB that you are using) in your for loop as

 for k=1:n
    kthImg = read(vidob,k); % no need to convert from frame since already image
    % now convert to double, CYG etc.
 end

In the above, on each iteration of the loop we read each image from the video and then do the conversion.

[Gohan]

thnku sir its working