Question on Image transformation
显示 更早的评论
Hey guys. I have a question on changing the perspective of an image. Using this resource: http://mopage.de/2011/10/perspective/ I found a way to calculate the transformation matrix, but how do I use this to create a new image with the change in perspective?
Thanks for the help!
采纳的回答
Alex Taylor
2013-4-2
1 个投票
Hi Mubeen,
If you have R2013a, you should look at the class projective2d and the function imwarp.
http://www.mathworks.com/help/images/ref/imwarp.html http://www.mathworks.com/help/images/ref/projective2dclass.html
You can use projective2d to compute forward and inverse point transformations. You can use imwarp and projective2d together to form the resampled output image that is produced by applying a projective transformation.
If you are using previous versions of the Image Procesing Toolbox, you should use the analogous workflow with maketform('projective',___) and imtransform.
We refer the transformation you are referring to as a projective transformation in the Image Processing Toolbox.
更多回答（2 个）
Sean de Wolski
2013-3-29
doc imwarp
doc imtransform
Image Analyst
2013-3-31
0 个投票
2 个评论
usman arif
2017-2-14
Hi guys, I am working on the same thing, I want to rotate image I which is gray scale image, by rotation matrix R which is 3x3 matrix. I am trying to use imwarp with projective2d. but the problem is imwarp changes the size of image.. I want the image size to remain same
Image Analyst
2017-2-14
Call imcrop() or imresize() to make it whatever you want after you've warped it.
类别
在 帮助中心 和 File Exchange 中查找有关 Process Point Clouds 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
