read_yuv.zip_YUV_read_yuv.m_video to yuv matlab_yuv 亮度_读取yuv

function [Y U V]=read_yuv(filename,width,height,frames,format) %read_yuv Read the yuv file frame by frame and save the data y,cr cb into matrix Y,U,V respectively %filename The name of the yuv file %width The width of the yuv file %height The height of the yuv file %frames The total frame of the yuv file %format yuv420 for 1 yuv422 for 2 yuv444 for3 %自己写的用matlab读取YUV文件,并分帧保存.生成一个N维矩阵(N是总帧数),一维就是一帧的数据. %Y U V分别保存. fid=fopen(filename,'r'); if format==1 for frame=1:frames img_y =fread(fid,height*width,'uint8'); img_y = reshape(img_y,width,height ); Y(:,:,frame) = img_y'; img_u =fread(fid,height*width/4,'uint8'); img_u= reshape(img_u,width/2,height/2 ); U(:,:,frame) = img_u'; img_v =fread(fid,height*width/4,'uint8'); img_v= reshape(img_v,width/2,height/2 ); V(:,:,frame) = img_v'; end end if format==2 for frame=1:frames img_y =fread(fid,height*width,'uint8'); img_y = reshape(img_y,width,height ); Y(:,:,frame) = img_y'; img_u =fread(fid,height*width/2,'uint8'); img_u= reshape(img_u,width,height/2 ); U(:,:,frame) = img_u'; img_v =fread(fid,height*width/2,'uint8'); img_v= reshape(img_v,width,height/2 ); V(:,:,frame) = img_v'; end end if format==3 for frame=1:frames img_y =fread(fid,height*width,'uint8'); img_y = reshape(img_y,width,height ); Y(:,:,frame) = img_y'; img_u =fread(fid,height*width,'uint8'); img_u= reshape(img_u,width,height ); U(:,:,frame) = img_u'; img_v =fread(fid,height*width,'uint8'); img_v= reshape(img_v,width,height ); V(:,:,frame) = img_v'; end end fclose(fid);