Glossary - Sharp IV-C35M User Manual

[A]
Area filter
A function used to eliminate an island if its area is smaller that the specified size after each of the
objects in an image have been identified.
Arrangement of the square pixels
This refers to CCD elements whose pixels are square and arranged at the same vertical and hori-
zontal interval.
If this type of CCD element is used, length corrections do not need to be calculated and the preci-
sion and processing time do not deteriorate.
Rectangular grid
1.28
1
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.
[Example of detection]
- An example of light to dark averaging (DTCT MODE: BRT - DRK) while scanning horizontally
(SEARCH DIR.: HORIZ -), with artifact processing (enabled) .
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: disabled)
[B]
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

Square grid
1
1
CCD pick-up elements
The aspect ratio is 1: 1.
G-1
One pixel
Duration of dark area
in the line scan
Average light level (vertical)
Glossary
G