Gray Search And Precise Search; Step 1: Registering The Model - Omron F160 Operation Manual

Gray Search and Precise Search

3-11

Gray Search and Precise Search

SeeAlso
HELP
HELP
Gray Search
Precise Search
CHECK
Operational Flow
(If required)
STEP 2
STEP 1
Change
Register
search
model.
coordinates.
3-11-1

STEP 1: Registering the Model

CHECK
Register an image pattern (called a model) in advance. The part of an input
image that is most similar to the model is found, the position is calculated in
pixel units, and the degree of similarity is expressed with a correlation value.
Perform processing directly on the density image taken by the Camera.
Refer to page 11.
Refer to page 322 for information on density images.
Refer to page 323 for information on models.
With a gray search, the position is obtained in pixel units.
With a precise search, the position is obtained in sub-pixel (smaller than a
pixel) units. The processing time is longer than that for gray search.
Use flexible searches when the shape of the model varies.
STEP 3
Set search
region
The area of the image to be inspected is registered as a model. The model
can be of any size.
When a model is registered, the center position of the model is registered as
the search coordinates. When several figures have been combined in the
drawing, the center coordinates of circumscribing rectangle becomes the
search coordinates. This position becomes the reference position for position
compensation, so be sure to place the measurement object in the correct posi-
tion before drawing the measurement region.
Regions can be created by combining up to 3 different figures. Regions with
difficult shapes can be drawn and sections not to be measured can be left out
of the region by combining different figures.
1. Select Measurement/<Region number>/Gray search (or Precise
search).
0.Scn 0 =SET= Measurement
0. OCR for 1 chara
1. Classification
2. Defect
3. Density data
4. Edge pitch
5. Edge position
6. Edge width
7. Gray search
↑ ↓ ↑ ↓
(If required)
STEP 5
STEP 4
Set Change
judgement detailed
conditions. conditions.
Section 3-11
STEP 6
Set
coordinate
mode.
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