Computes vertex coordinates of the quadrangle, to which the source ROI rectangle is mapped by the perspective transform.
Computes the size of external work buffer for an inverse wavelet transform.
Calculates the minimal eigen value of image blocks for corner detection.
Converts a color gradient image to grayscale.
This section describes the functions that calculate the optical flow using the pyramidal Lucas-Kanade algorithm [ Bou99].
The optical flow between two images is generally defined as an apparent motion of image brightness. Let I(x, y, t) be the image brightness that changes in time to provide an image sequence.
Computes the size of the lower pyramid layer.
Computes the size of the working buffer for the gradient segmentation.
Modifies a Haar classifier by tilting specified features.
DEPRECATED. Deallocates the internal representation of the PSF table.
DEPRECATED. Convert an YCbCr image to the BGR color model.