Image rotate

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?

Answer 1

[Sean de Wolski]

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

[Dipak]

Hi sean First of all Thankyou very much for giving me the ans.

[priya7 D Mello]

Thank you very much. I needed this code badly for my project :)

[Leo Wong]

You are a genius Sean. Your code was the missing piece to complete my project :)

[Ali RAHIMI KHOJASTEH]

Thank you, it works for me

Answer 2

[Walter Roberson]

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.

[Dipak]

Thanks Walter For the reply.

Thank you.

Answer 3

[DGM]

See this thread for multiple different solutions:

https://www.mathworks.com/matlabcentral/answers/499506-how-to-change-background-color-with-imrotate-function