Table of Contents
Advertisement
[A]
Ë Ë Ë Ë Ë Area filter
A function used to eliminate an island if it area is smaller that the specified size after each of the objects
in an image have been identified.
Ë Ë Ë Ë Ë
Arrangement of the square pixels
This refers to CCD elements whose pixels are square and arranged at the same vertical and horizontal
interval.
If this type of CCD element is used, length corrections do not need to be calculated and the precision and
processing time do not deteriorate.
Ë Ë Ë Ë Ë
Artifact processing
Artifact processing is a method of processing that eliminates the false detection of the edge of the target
object when an artifact is in the line being scanned. This process can be used during edge detection. The
real edge of the target object is detected by computing the average duration of the dark area in the scan
line, which is much longer for a target object than for an artifact.
[Example of detection]
- An example of light to dark averaging (DETECT MODE:BRT - DRK) while scanning horizontally (DE
TECT DIR.:HORI -), with artifact processing (enabled) (PRC. PROJECT: YES).
Edge detection point
(with artifact processing: enabled)
When artifact processing is disabled in the above example, the edge detection point changes.
Edge detection point (with artifact processing off)
[B]
Ë Ë Ë Ë Ë Binary image
Pixels in images are converted to one of two values, "1" when the pixel is lighter than the specified
threshold value (level), and "0" when it is darker than the specified threshold value (level).
Glossary
Rectangular grid
1.28
1
CCD pick-up elements
G-1
Glossary
Square grid
1
1
One pixel
The aspect ratio is 1: 1.
Duration of dark area
in the line scan
Average light (vertical)
G
Advertisement
Table of Contents
