[MATLAB图像处理] 如何生成颜色RGB值根据公式而变化的图像？？

Img = zeros(300,300,3,'uint8');
for i=1:300
for j=1:300
x = j/300;
y = (300-i)/300;
Img(i,j,1) = 255/(1+x+1-y);
Img(i,j,2) = 255*(1-y)/(1+x+1-y);
Img(i,j,3) = 255*x/(1+x+1-y);
end
end
imshow(Img);