读取4:2:0格式YUV序列的Y分量、U分量以及V分量，并分别保存为.yuv格式(matlab实现)

ゝ一世哀愁。 2022-05-31 01:57 171阅读 0赞

读取4:2:0格式YUV序列的Y分量、U分量以及V分量，并分别保存为.yuv格式，不多说，具体程序如下：

read\_Y\_U\_V.m

%%  读取4:2:0格式YUV的Y、U和V分量，然后将三个分量分别保存为.yuv格式
    
    clear
    clc
    
    %% Read yuv from file
    row=144;      %   长度
    col=176;      %   宽度
    fnum=300;     %   帧数
    
    yuvseq = 'foreman_qcif_300.yuv';        % 输入yuv序列名称
    len=length(yuvseq);
    yuvName=yuvseq(1:len-4);
    fid = fopen(yuvseq, 'r');
    
    rec_Y=zeros(col,row,fnum);
    rec_U=zeros(col/2,row/2,fnum);
    rec_V=zeros(col/2,row/2,fnum);
    
    for f=1:fnum
        [rec_Y(:,:,f),count] = fread(fid,[col,row],'uchar');
        [rec_U(:,:,f),count1]=fread(fid,[col/2,row/2],'uchar');
        [rec_V(:,:,f),count2]=fread(fid,[col/2,row/2],'uchar');
    end
    
    filename_Y=sprintf('%s%s',yuvName,'_Y.yuv');         %% 生成.yuv名称
    outfid_Y=fopen(filename_Y,'wb');
    
    filename_U=sprintf('%s%s',yuvName,'_U.yuv');     
    outfid_U=fopen(filename_U,'wb');
    
    filename_V=sprintf('%s%s',yuvName,'_V.yuv');     
    outfid_V=fopen(filename_V,'wb');
    
    for f=1:fnum
        pic_Y=uint8(rec_Y(:,:,f)');                      %% '代表转置操作
        fwrite(outfid_Y,rec_Y(:,:,f), 'uint8');   
        imshow(pic_Y);                                   %%  将每个矩阵显示为图片
    end
    
    for f=1:fnum   
        pic_U=uint8(rec_U(:,:,f)');
        fwrite(outfid_U,rec_U(:,:,f), 'uint8');
        imshow(pic_U);
    end
    
    for f=1:fnum   
        pic_V=uint8(rec_V(:,:,f)');
        fwrite(outfid_V,rec_V(:,:,f),  'uint8');
        imshow(pic_V);
    end
    
    fclose(fid);
    fclose(outfid_Y);
    fclose(outfid_U);
    fclose(outfid_V);