can anyone give the recover image rotation code?
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anika hossain
on 5 Sep 2015
Commented: Image Analyst
on 12 Apr 2016
I need to recover an rotated image. I found the solution in MATLAB solution:
but I am not able to use it. It would be helpful if anyone could provide the code.
4 Comments
Image Analyst
on 5 Sep 2015
Edited: Image Analyst
on 5 Sep 2015
If all you have is a final, rotated image, and no original image to compare it to, then obviously there is no way to find out how much your only image was rotated, or even if it was rotated. Rotation has to be compared to something.
Look at this image.
![](/matlabcentral/answers/uploaded_files/36667/It's%20not%20a%20bug%20-%20it's%20a%20feature.bmp)
Now, if I tell you it's rotated, but don't tell you anything else, can you tell me how much it was rotated?
Accepted Answer
Image Analyst
on 5 Sep 2015
You can use imrotate() if you know the angle. If you don't know the angle you'll have to figure it out - it's not hard, just the arctangent of the ratio of the length of the two black triangle sides.
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