imaqGetContourCount

NI Vision for LabWindows/CVI Function

imaqGetContourCount

Usage

int imaqGetContourCount(const ROI* roi);

Purpose

Returns the number of contours in a region of interest (ROI).

Parameters

Name

Type

Description

roi const ROI* The ROI from which the function gets the contour count.

Return Value

Type

Description

int On success, this function returns the number of contours in the ROI. On failure, this function returns –1. To get extended error information, call imaqGetLastError().