save image without the white border

Question

Xin 2020-4-8

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/516379-save-image-without-the-white-border

回答： Image Analyst 2020-4-8

Hello. I would like to save a phot, or any imagesc, pcolor or whatever 2D image. But the problem is that matlab alway automatically leaves a white border somehow. I would like to remove it because I have thousands of photos to process and I cannot crop them manually. I don't quite understand why this is automatically left and there is simply no option in print or saveas to remove the white border.

For example, to generate a random 2D matrix

h = figure(1)

x = rand(50,50);

imagesc(x)

xticks([]);yticks([])

print(['-dpng'],'Fig')

I always get a white border in the end. Could someone give a suggestion on how to remove it. Please, if you want to recommend export_fig, please give an example. This package seems to have no examples in the help. Thanks!