Performs a radial stretch for each color component (R, G, B). This allows manual correction of Barrel and Pincushion distortion (lens distortion, underwater distortion).
A, B, C, D (followed by channel name) are the coefficients
Note: ◼The D value can generally be automatically calculated as D := 1.0 - ( A + B + C ) ◼If the image PixelFormat is not ie24RGB, it will be converted
// Minor correction of pin cushion effect in image a := 0.045; b := 0; c := 0; d := 1.0 - (a+b+c); ImageEnView1.Proc.RadialStretch( a, b, c, d, a, b, c, d, a, b, c, d );