how can i obtain only hand after skin detection?
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hi; im working on the hand detection, firstly i used skin detection algorithm but i dont know how can i obtain hand after skin detection, here my code;
vid = videoinput('winvideo', 1, 'YUY2_640x480');
set(vid, 'FramesPerTrigger', Inf);
set(vid, 'ReturnedColorspace', 'rgb')
vid.FrameGrabInterval =5;
start(vid)
while(vid.FramesAcquired<=50)
I = getsnapshot(vid);
I=double(I);
%%skin detection
[hue,s,v]=rgb2hsv(I);
cb = 0.148* I(:,:,1) - 0.291* I(:,:,2) + 0.439 * I(:,:,3) + 128;
cr = 0.439 * I(:,:,1) - 0.368 * I(:,:,2) -0.071 * I(:,:,3) + 128;
[w h]=size(I(:,:,1));
for i=1:w
for j=1:h
if 140<=cr(i,j) && cr(i,j)<=165 && 140<=cb(i,j) && cb(i,j)<=195 && 0.01<=hue(i,j) && hue(i,j)<=0.1
segment(i,j)=1;
else
segment(i,j)=0;
end
end
end
im(:,:,1)=I(:,:,1).*segment;
im(:,:,2)=I(:,:,2).*segment;
im(:,:,3)=I(:,:,3).*segment;
subplot(1,1,1);imshow(uint8(im));title('My Edge Detection')
end
stop(vid);
flushdata(vid);
clear all
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Answers (2)
Image Analyst
on 20 Mar 2014
segment is your mask. Assuming your algorithm for creating that skin mask is good, then you multiply segment by your original image to blacken outside the mask. So what's the problem? That is "only the hand", I mean other than the black surround. Do you want to crop to the bounding rectangle, or what?
0 Comments
YUNUS
on 20 Mar 2014
5 Comments
intissar khalifa
on 13 Feb 2017
hi mr i need to detect only hand in a video so can you help me and thanks.
Image Analyst
on 13 Feb 2017
Dirk has several hand-related submissions on his File Exchange: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A29180
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