matlab 保存灰度和彩色图片

1. imwrite 函数可以实现灰度图片的保存；

2.saveas 保存彩色图片

figure
imagesc(DefocusedImage{1,55})
set(gca,\'XTick\',[]) % Remove the ticks in the x axis!
set(gca,\'YTick\',[]) % Remove the ticks in the y axis
set(gca,\'Position\',[0 0 1 1]) % Make the axes occupy the hole figure
saveas(gcf,\'Figure55\',\'png\')