ImgAddSub

Prototype

ImgAddSub(intDestinationImageHandle,intSourceImageHandle,intNormalizer)

Description

Copies the source image into the destination image, subctrating the source image and adding the constant normalizer value. Source and destination handles must refers to grayscale images that have the same size.

Parameters

intDestinationImageHandle: integer value corresponding to the destination image handle.

intSourceImageHandle: integer value corresponding to the source image handle.

intNormalizer: integer valure corrisponding to a constant to add after subcracting source pixels from dest pixels to avoid underflow.

Returned value

None.

Example

// Duplicate original image

NewImage:=ImgCopy(_CurrentImage,0,0,0,0);

// Apply mean filter on duplicate

MeanFilter(NewImage);

// Subtract filtered image from original one

ImgAddSub(_CurrentImage, NewImage, 128);

// Delete duplicated image

ImgDelete(NewImage);