National Instruments IMAQTM Chapter 3 Making Grayscale and Color Measurements, Chapter 4 Performing Particle Analysis, Chapter 5 Performing Machine Vision Tasks

Contents
IMAQ Vision for Visual Basic User Manual vi ni.com
Improve an Image..........................................................................................................2-9
Lookup Tables.................................................................................................2-9
Filters..............................................................................................................2-9
Convolution Filter.............................................................................2-10
Nth Order Filter................................................................................2-10
Grayscale Morphology....................................................................................2-10
FFT..................................................................................................................2-11
Complex Image Operations..............................................................2-12
Chapter 3
Making Grayscale and Color Measurements
Define Regions of Interest.............................................................................................3-1
Defining Regions Interactively.......................................................................3-1
Defining Regions Programmatically...............................................................3-5
Defining Regions with Masks.........................................................................3-6
Measure Grayscale Statistics.........................................................................................3-6
Measure Color Statistics................................................................................................3-7
Comparing Colors...........................................................................................3-9
Learning Color Information............................................................................3-9
Specifying the Color Information to Learn ......................................3-10
Using the Entire Image.....................................................................3-10
Choosing a Color Representation Sensitivity................................... 3-12
Ignoring Learned Colors...................................................................3-13
Chapter 4
Performing Particle Analysis
Create a Binary Image...................................................................................................4-1
Improve the Binary Image.............................................................................................4-2
Removing Unwanted Particles........................................................................4-3
Separating Touching Particles........................................................................ 4-3
Improving Particle Shapes..............................................................................4-4
Make Particle Measurements........................................................................................4-4
Chapter 5
Performing Machine Vision Tasks
Locate Objects to Inspect..............................................................................................5-2
Using Edge Detection to Build a Coordinate Transformation........................ 5-3
Using Pattern Matching to Build a Coordinate Transformation..................... 5-5
Choosing a Method to Build the Coordinate Transformation.........................5-7