Справочник Пользователя для National Instruments IMAQ Vision for LabWindows TM /CVI

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The IMAQ Machine Vision function tree (

NIMachineVision.fp

) 

contains separate classes corresponding to groups or types of functions. 
Table 1-2 lists the IMAQ Machine Vision function types and gives a 
description of each type.

Caliper

Functions designed for gauging, measurement, and inspection applications.

Operators

Functions that perform arithmetic, logic, and comparison operations with 
two images or with an image and a constant value.

Analytic 
Geometry

Functions that perform basic geometric calculations on an image.

Frequency 
Domain 
Analysis

Functions for the extraction and manipulation of complex planes. Functions 
of this type perform Fast Fourier Transform (FFT), inverse FFT, truncation, 
attenuation, addition, subtraction, multiplication, and division of complex 
images.

Barcode I/O

Functions that find and read barcodes.

LCD

Functions that find and read seven-segment LCD characters.

Meter

Functions that return the arc information of a meter and read the meter.

Utilities

Functions that return structures, and a function that returns a pointer to 
predefined convolution matrices.

OCR

Functions that perform optical character recognition on an image.

Classification

Functions that classify an image or feature vector.

Obsolete

Functions that are no longer necessary but may exist in older applications.

Table 1-2.  IMAQ Machine Vision Function Types

Coordinate Transform

Functions that find coordinate transforms based on image contents.

Count and Measure Objects

Function that counts and measures objects in an image.

Find Patterns

Function that finds patterns in an image.

Locate Edges

Functions that locate different types of edges in an image.

Table 1-1.  IMAQ Vision Function Types (Continued)