can anyone give the recover image rotation code?

I need to recover an rotated image. I found the solution in MATLAB solution:

http://www.mathworks.com/help/images/examples/find-image-rotation-and-scale.html?searchHighlight=finding%2520the%2520rotation%2520of%2520distorted%2520image

but I am not able to use it. It would be helpful if anyone could provide the code.

[Image Analyst]

There is code in that link. Explain why you are not able to use it, after you've read this link http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

[anika hossain]

    cpselect(distorted,original,movingPoints,fixedPoints);

here parameter 'original' is the main image that is before rotate.but i can not have it. so i can not get the 'movingPoints' 'fixedPoints' value for further program

[Image Analyst]

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.

Now, if I tell you it's rotated, but don't tell you anything else, can you tell me how much it was rotated?

[anika hossain]

ok. is there any other function that can inverse rotate the image that is rotated but not cropped like the image below

if i specify the angle to 0 degree?

Answer 1

[Image Analyst]

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.

[sendi novianto]

could you provide sample code to solve that ?

[Image Analyst]

See attached.