Position Correction; Correction Details - Sharp IV-S30 User Manual

Setting Measurement Conditions

[6] Position correction

Based on the positional deviation data measurement 0 (positional deviation measurement), the
correction of the image coordinates is dealt with using measurements 1 to 4.

(1) Correction details

The types of position correction available are: XY correction, angular correction (standard) and
angular correction (high precision)
Type
3
XY correction
Angular correction
(standard)
Angular correction
(high precision)
[Example of a comparison between standard and high precision angular correction]
The position is adjusted according to the amount of deviation in X and
Y at the first point (model 0) detected in measurement 0.
There are three correction directions: X axis correction, Y axis
correction and X and Y axis correction.
- X axis correction--Adjusted misalignment in the X axis
- Y axis correction--Adjusted misalignment in the Y axis
The position is adjusted because of a detected angular deviation θ in
rotation [2-point search/2-point edge/1-point search + 1-point edge]
from measurement 0.
- When "YES" is selected in the DTECT ANGL item specifying a "1P-
SCH" or a "1P-SCH+1P-EDGE" in measurement 0, the position will be
corrected according to the angle detected.
The position is adjusted because of a detected angular deviation θ in
rotation [2-point search/2-point edge/1-point search + 1-point edge]
from measurement 0. The high precision angular correction settings
allows the IV-S30 to display a very precisely corrected image. But, this
selection lowers rotation processing speed.
- When "YES" is selected in the DTECT ANGL item specifying a "1P-
SCH" or a "1P-SCH+1P-EDGE" in measurement 0, the position will be
corrected according to the angle detected.
Scanned image
Scanned image
Details
Image after correction
(Standard) (High precision)
θ image after angular correction
3-26