For this question, we use the following matrix notation to describe the homography which projects the point to the point : Such matrix expresses transformations around the origin, and to perform a rotation around an arbitrary point we need to proceed as follows: Translate the rotation center to the origin; Perform the rotation; Apply the inverse translation to reposition the center of rotation to its original position. Suppose we want to rotate our image around the point of coordinates by -90 degrees ( ). What is the value of the component of the global transformation matrix?

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For this question, we use the following matrix notation to describe the homography which projects the point to the point :

Such matrix expresses transformations around the origin, and to perform a rotation around an arbitrary point we need to proceed as follows:

Translate the rotation center to the origin;
Perform the rotation;
Apply the inverse translation to reposition the center of rotation to its original position.

Suppose we want to rotate our image around the point of coordinates by -90 degrees ().

What is the value of the component of the global transformation matrix?

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