imaqSubtractConstant

NI Vision for LabWindows/CVI Function

imaqSubtractConstant

Usage

int imaqSubtractConstant(Image* dest, const Image* source, PixelValue value);

Purpose

Subtracts each pixel in an image by a constant.

Image Types Supported

IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL, IMAQ_IMAGE_RGB, IMAQ_IMAGE_COMPLEX

Parameters

Name

Type

Description

dest Image* The destination image.
source const Image* The image from which the function subtracts a scalar constant.
value PixelValue The value to subtract from the source image pixels. Set the member of value that corresponds to the image type.

Return Value

Type

Description

int On success, this function returns a non-zero value. On failure, this function returns 0. To get extended error information, call imaqGetLastError().