National Instruments IMAQTM User Manual
Contents
© National Instruments Corporation
vii
Defining Regions Interactively........................................................................5-8
Defining Regions Programmatically ...............................................................5-9
Defining Regions Programmatically ...............................................................5-9
Finding Lines or Circles....................................................................5-10
Finding Edge Points Along One Search Contour .............................5-11
Finding Edge Points Along Multiple Search Contours.....................5-12
Finding Edge Points Along One Search Contour .............................5-11
Finding Edge Points Along Multiple Search Contours.....................5-12
Finding Points Using Pattern Matching ..........................................................5-12
Defining and Creating Effective Template Images...........................5-13
Training the Pattern Matching Algorithm.........................................5-15
Defining a Search Area .....................................................................5-16
Setting Matching Parameters and Tolerances ...................................5-17
Testing the Search Algorithm on Test Images..................................5-18
Using a Ranking Method to Verify Results ......................................5-19
Training the Pattern Matching Algorithm.........................................5-15
Defining a Search Area .....................................................................5-16
Setting Matching Parameters and Tolerances ...................................5-17
Testing the Search Algorithm on Test Images..................................5-18
Using a Ranking Method to Verify Results ......................................5-19
Defining and Creating Effective Color Template Images ................5-20
Training the Color Pattern Matching Algorithm...............................5-21
Defining a Search Area .....................................................................5-22
Setting Matching Parameters and Tolerances ...................................5-23
Testing the Search Algorithm on Test Images..................................5-25
Training the Color Pattern Matching Algorithm...............................5-21
Defining a Search Area .....................................................................5-22
Setting Matching Parameters and Tolerances ...................................5-23
Testing the Search Algorithm on Test Images..................................5-25
Distance Measurements...................................................................................5-26
Analytic Geometry Measurements ..................................................................5-27
Instrument Reader Measurements ...................................................................5-28
Analytic Geometry Measurements ..................................................................5-27
Instrument Reader Measurements ...................................................................5-28
Classifying Samples ........................................................................................5-28
Reading Characters..........................................................................................5-29
Reading Barcodes............................................................................................5-29
Reading Characters..........................................................................................5-29
Reading Barcodes............................................................................................5-29