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From what I understand, the homography matrix only accounts for rotation and translation, but maybe I am wrong about this.

Zezimabig
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    The full 9x9 homography matrix (2D) with 8 degrees of freedom can handle scale, rotation, shearing, translation and projectivity. In short: it can handle any plane-to-plane transformation. Other forms have different degrees of freedom. For example in 3D rendering you are often interested only in a 3D rigid transformation, where scaling isnt wanted, because you dont want to distort 3D models, you only want to give them another pose. – Micka Dec 30 '21 at 06:50
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    I’m voting to close this question because it's not related to programming, but to the math/geometry behind computer vision. – Christoph Rackwitz Dec 30 '21 at 11:28

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Yes, the first two elements on diagonal of the homography matrix are for the scale in x and y axis respectively. Have a look at the answers of this question.

Abhi25t
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