視頻中人體跟蹤與檢測算法的設計” 好難啊,
function d = tracking(video)
if ischar(video)
% Load the video from an avi file.
avi = aviread(video);
pixels = double(cat(4,avi(1:2:end).cdata))/255;
clear avi
else
% Compile the pixel data into a single array
pixels = double(cat(4,video{1:2:end}))/255;
clear video
end
% Convert to RGB to GRAY SCALE image.
nFrames = size(pixels,4);
for f = 1:nFrames
pixel(:,:,f) = (rgb2gray(pixels(:,:,:,f)));
end
rows=240;
cols=320;
nrames=f;
for l = 2:nrames
d(:,:,l)=(abs(pixel(:,:,l)-pixel(:,:,l-1)));
k=d(:,:,l);
bw(:,:,l) = im2bw(k, .2);
bw1=bwlabel(bw(:,:,l));
imshow(bw(:,:,l))
hold on
cou=1;
for h=1:rows
for w=1:cols
if(bw(h,w,l)>0.5)
% disp(d(h,w,l));
toplen = h;
if (cou == 1)
tpln=toplen;
end
cou=cou+1;
break
end
end
end
disp(toplen);
coun=1;
for w=1:cols
for h=1:rows
if(bw(h,w,l)>0.5)
leftsi = w;
if (coun == 1)
lftln=leftsi;
coun=coun+1;
end
break
end
end
end
disp(leftsi);
disp(lftln);
widh=leftsi-lftln;
heig=toplen-tpln;
widt=widh/2;
disp(widt);
heit=heig/2;
with=lftln+widt;
heth=tpln+heit;
wth(l)=with;
hth(l)=heth;
disp(heit);
disp(widh);
disp(heig);
rectangle('Position',[lftln tpln widh heig],'EdgeColor','r');
disp(with);
disp(heth);
plot(with,heth, 'r*');
drawnow;
hold off
end;
這些代碼都讀不懂,好難辦。