Affine3D 4x4 matrix to homogeneous matrix.

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Paul Stroe
Paul Stroe 2017-3-7
编辑： Prasad Mendu 2017-3-17
Hello,
I am using imregtform to get the transformation matrix and register images, Affine and Rigid to compare them. After that I want to extract translation, rotation, scale etc from the transformation matrix. I know how to do that from a homogenous matrix but the method returns an affine3d 4x4 matrix that is not homogenous.
Could you please tell me how to convert it? This is how it looks:
tform=0.999912716225678 -0.00347384382740352 -0.0127472483010894 0
0.00362177295218213 0.999926157343265 0.0116001129914652 0
0.0127060100294962 -0.0116452681289324 0.999851461487823 0
-0.734363250256798 0.656910969129523 0.275948901741684 1]

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回答（1 个）

Prasad Mendu
Prasad Mendu 2017-3-17
编辑：Prasad Mendu 2017-3-17
You can refer to functions under "Coordinate System Transformations" section at the link below to see if one of those serves your use-case.
https://www.mathworks.com/help/robotics/functionlist.html

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