rgb 和 yuv_nv12 数据相互转换

clc;clear;close all height = 1024; width = 1280; fid = fopen('yuvnv12.raw','rb'); X = fread(fid,[width,height*1.5],'uint8'); fclose(fid); X = X'; Y = X(1:height,:); UV = X(height+1:height*1.5,:); UV_1 = UV(:,1:2:width); UV_2 = UV(:,2:2:width); U = zeros(height,width); V = zeros(height,width); for i = 1 : height for j = 1 : width x = round(j/2); y = round(i/2); U(i,j) = UV_1(y,x); V(i,j) = UV_2(y,x); end end R = zeros(height,width); G = zeros(height,width); B = zeros(height,width); for i = 1 : height for j = 1 : width-1 y = Y(i,j); u = U(i,j); v = V(i,j); r = y + 1.4075 * (v-128); g = y - 0.344 * (u-128) - 0.714 * (v-128); b = y + 1.770 * (u-128); R(i,j) = r; G(i,j) = g; B(i,j) = b; end end rgb = cat(3,R,G,B); figure;imshow(uint8(rgb)); imwrite(uint8(rgb),'L0.bmp','bmp');