资源描述实现读取yuv格式的视频，存取为.jpg 图像的序列

clc; %fid=fopen('foreman.yuv','r'); fid=fopen('suzie_qcif.yuv','r'); % for mobcal % row=640*2; % col=360*2; % for container/news/foreman.yuv row=176*2; col=144*2; % for city.yuv % row=352*2; % col=288*2; frames=100; %tr_res='high-foreman'; tr_res='high-container'; for frame=1:frames Y=zeros(row,col,frames); U=zeros(row/2,col/2,frames); V=zeros(row/2,col/2,frames); UU=zeros(row,col,frames); VV=zeros(row,col,frames); [Y(:,:,frame),count]=fread(fid,[row,col],'uchar'); [U(:,:,frame),count1]=fread(fid,[row/2,col/2],'uchar'); [V(:,:,frame),count2]=fread(fid,[row/2,col/2],'uchar'); UU(1:2:row-1,1:2:col-1,frame)=U(:,:,frame); UU(1:2:row-1,2:2:col,frame)=U(:,:,frame); UU(2:2:row,1:2:col-1,frame)=U(:,:,frame); UU(2:2:row,2:2:col,frame)=U(:,:,frame); VV(1:2:row-1,1:2:col-1,frame)=V(:,:,frame); VV(1:2:row-1,2:2:col,frame)=V(:,:,frame); VV(2:2:row,1:2:col-1,frame)=V(:,:,frame); VV(2:2:row,2:2:col,frame)=V(:,:,frame); R=Y+1.140*(VV-128); G=Y+0.395*(UU-128)-0.581*(VV-128); B=Y+2.032*(UU-128); for i=1:row for j=1:col if R(i,j,frame)<0 R(i,j,frame)=0; end if R(i,j,frame)>255 R(i,j,frame)=255; end if G(i,j,frame)<0 G(i,j,frame)=0; end if G(i,j,frame)>255 G(i,j,frame)=255; end if B(i,j,frame)<0 B(i,j,frame)=0; end if B(i,j,frame)>255 B(i,j,frame)=255; end end end R=R/255; G=G/255; B=B/255; rgb=cat(3,R(:,:,frame)',G(:,:,frame)',B(:,:,frame)'); name=sprintf('%03d',frame); name1=[name,'.jpg']; imwrite(rgb, fullfile(tr_res,name1),'JPG'); % figure,imshow(rgb); end