opencv/cxcore.go
func (mat *Mat) InitHeader(rows, cols, type_ int, data unsafe.Pointer, step int) {
	C.cvInitMatHeader(
		(*C.CvMat)(mat),
		C.int(rows),
		C.int(cols),
		C.int(type_),
		data,
		C.int(step),
	)
}
func (mat *Mat) InitHeader(rows, cols, type_ int, data unsafe.Pointer, step int) {
	C.cvInitMatHeader(
		(*C.CvMat)(mat),
		C.int(rows),
		C.int(cols),
		C.int(type_),
		data,
		C.int(step),
	)
}
/* Initializes CvMat header */