can anyone give the recover image rotation code?

2 次查看（过去 30 天）

anika hossain 2015-9-5

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/240090-can-anyone-give-the-recover-image-rotation-code

评论： Image Analyst 2016-4-12

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.

4 个评论
显示 2更早的评论隐藏 2更早的评论

Image Analyst 2015-9-5

编辑：Image Analyst 2015-9-5

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 2015-9-5

编辑：anika hossain 2015-9-5

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?

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Image Analyst 2015-9-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/240090-can-anyone-give-the-recover-image-rotation-code#answer_191427

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.