1 | initial version |

I can partially explain that, this explanation was taken from the book "Multiple View Geometry":

Property of an affine (and projective?) transformation: - If the determinant of the top-left 2x2 matrix is > 0 the transformation is orientation-preserving. - Else if the determinant is < 0, it is orientation-reversing.

2 | No.2 Revision |

I can partially explain that, this explanation was taken from the book "Multiple View ~~Geometry":~~Geometry".

Property of an affine (and projective?) ~~transformation:
- ~~transformation:

- If the determinant of the top-left 2x2 matrix is > 0 the transformation is
~~orientation-preserving. -~~orientation-preserving. - Else if the determinant is < 0, it is orientation-reversing.

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