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Geometric Image Transformations

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Icon Name Description / Applications Modules
cvGetAffineTransform

Calculates the affine transform from 3 corresponding points.


Prepares matrix to be used with cvWarpAffine.

OpenCV
cvGetDefaultNewCameraMatrix

Returns the default new camera matrix.

OpenCV
cvGetPerspectiveTransform

Calculates the perspective transform from four pairs of corresponding points.


Prepares matrix to be used with cvWarpPerspective.

OpenCV
cvGetRectSubPix

Retrieves the pixel rectangle from an image with sub-pixel accuracy.

OpenCV
cvGetRotationMatrix2D

Calculates the affine matrix of 2D rotation.


Prepares matrix to be used with cvWarpAffine.

OpenCV
cvInitUndistortRectifyMap

Computes the undistortion and rectification transformation map.

OpenCV
cvInvertAffineTransform

Inverts an affine transformation.


Prepares matrix to be used with cvWarpAffine.

OpenCV
cvRemap

Applies a generic geometrical transformation to the image.

OpenCV
cvResize

Resizes an image.

OpenCV
cvUndistort

Transforms an image to compensate for lens distortion.

OpenCV
cvUndistortPoints

Undistorts points.

OpenCV
cvWarpAffine

Applies an affine transformation to an image.

OpenCV
cvWarpPerspective

Applies a perspective transformation to an image.

OpenCV
cvWarpPolar

Remaps an image to polar or semilog-polar coordinates space.

OpenCV