National Instruments IMAQTM - Manual (Page 119)

Index
© National Instruments Corporation I-5 IMAQ Vision for Visual Basic User Manual
O
objects
classifying, 5-29
detecting, 5-2
locating, 5-2
OCR, 5-29
one-shot acquisition, 2-4
optimizing speed of the color pattern matching
algorithm, 5-23
Oval tool, 3-2
P
Pan tool, 3-3
particle analysis, 4-1
performing, 4-1
particle measurements, 4-4
particle shapes, improving, 4-4
particles
measuring, 4-4
removing unwanted, 4-3
pattern matching
building a coordinate transformation, 5-5
finding points, 5-12
score, 5-24
setting rotation angle ranges, 5-18
setting tolerances, 5-17, 5-23
tolerances, setting, 5-23
training algorithm, 5-15
verifying results, 5-19
pattern matching algorithms
using contrast, 5-18
PDF417 barcodes, 5-31
reading, 5-31
performing particle analysis, 4-1
perspective calibration, 6-1
pixel coordinates, converting to real-world
coordinates, 5-26
Point tool, 3-2
points
finding along one search contour, 5-11
finding along the edge of a circle, 5-10
finding measurement points, 5-9
finding with color location, 5-25
finding with color pattern matching, 5-19
finding with pattern matching, 5-12
Polygon tool, 3-3
programmatically defining
regions, 5-9
regions of interest, 3-5
programming examples (NI resources), A-1
R
ranking, verifying pattern matching
results, 5-19
reading
barcodes, 5-29
characters, 5-29
files, 2-6
images, 2-4
Rectangle tool, 3-2
reference coordinate systems, 6-3
defining, 6-3
region of interest, 6-6
specifying, 6-6
regions
defining interactively, 5-8
programmatically defining, 5-9
regions of interest
defining, 3-1
defining interactively, 3-1
defining with masks, 3-6
related documentation, x
removing unwanted particles, 4-3
results
displaying, 5-31
verifying for pattern matching, 5-19
ROI selection methods, 5-8