opencv/cxcore.go
func AbsDiffScalar(src *IplImage, value Scalar, dst *IplImage) {
	C.cvAbsDiffS(
		unsafe.Pointer(src),
		unsafe.Pointer(dst),
		(C.CvScalar)(value),
	)
}
func AbsDiffScalar(src *IplImage, value Scalar, dst *IplImage) {
	C.cvAbsDiffS(
		unsafe.Pointer(src),
		unsafe.Pointer(dst),
		(C.CvScalar)(value),
	)
}
// Calculates the per-element absolute difference between an array and a scalar.