Image rotate
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Can I have rotate image with white background
By default if we use imrotate it rotate image with black background can I have rotated image with white background?
采纳的回答
Sean de Wolski
2011-6-23
Irot = imrotate(I,theta);
Mrot = ~imrotate(true(size(I)),theta);
Irot(Mrot&~imclearborder(Mrot)) = 255;
%View 'er
imtool(Irot)
Edited to be more robust/simpler
4 个评论
Dipak
2011-6-24
priya7 D Mello
2012-2-23
Thank you very much. I needed this code badly for my project :)
Leo Wong
2018-9-5
You are a genius Sean. Your code was the missing piece to complete my project :)
Ali RAHIMI KHOJASTEH
2021-4-1
Thank you, it works for me
更多回答（2 个）
Walter Roberson
2011-6-23
1 个投票
imrotate() always fills with 0.
If your image is floating point, then one way to proceed would be to put a border of NaN around your image, and rotate that. The resulting image should have NaN in it; set the NaN and everything outside to the background color you want.
DGM
2023-12-30
0 个投票
See this thread for multiple different solutions:
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