matlab公共函數之保存YUV數據
阿新 • • 發佈：2017-08-23
end fun light blog fwrite 1.0 yuv pre yuv420
/* */
% Version: V1.0
function flag = saveYUVData(filename,Y,U,V,format)
flag = 1;
[height,width] = size(Y);
fid=fopen(filename,‘w+‘);
if fid <= 0
flag = -1;
disp(‘cannot open file!‘)
return;
end
imgY = Y‘;
imgU = U‘;
imgV = V‘;
imgYUV = Y‘;
switch format
case ‘NV21‘
imgNV21UV = zeros(width,height/2);
imgNV21UV(1:2:end,:) = imgV;
imgNV21UV(2:2:end,:) = imgU;
imgYUV = zeros(1,width*height*1.5);
imgYUV(1:1:width*height) = imgY(:);
imgYUV(width*height+1:end) = imgNV21UV(:);
case ‘NV12‘
imgNV21UV = zeros(width,height/2);
imgNV21UV(1:2:end,:) = imgU;
imgNV21UV(2:2:end,:) = imgV;
imgYUV = zeros(1,width*height*1.5);
imgYUV(1:1:width*height) = imgY(:);
imgYUV(width*height+1:end) = imgNV21UV(:);
case ‘YUV420P‘
imgUV = zeros(width,height/2);
imgUV(1:1:round(width/2),:) = imgU;
imgUV(round(width/2)+1:1:end,:) = imgV;
imgYUV = zeros(1,width*height*1.5);
imgYUV(1:1:width*height) = imgY(:);
imgYUV(width*height+1:end) = imgUV(:);
case ‘YUV444‘
imgYUV = zeros(1,width*height*3);
imgYUV(1:1:width*height) = imgY(:);
imgYUV(width*height+1:1:width*height*2) = imgU(:);
imgYUV(width*height*2+1:1:width*height*3) = imgV(:);
otherwise
disp(‘not support!‘)
end
fwrite(fid,imgYUV,‘uint8‘);
fclose(fid);
end
matlab保存圖像為YUV格式的腳本函數
% function flag = saveYUVData(filename,Y,U,V,format) % input params. % filename: saving data path % Y: Y data, res. width x height % U: U data, res. width/2 x height/2 for NV12, NV21 and YUV420P, width x height for YUV444 % V: V data, res. width/2 x height/2 for NV12, NV21 and YUV420P, width x height for YUV444 % format: must be NV12, NV21, YUV420P or YUV444 % % output % flag: if successed, flag = 1, otherwise flag = 0 % % % Author: KevenLee % Contact: [email protected]
matlab公共函數之保存YUV數據