Omron Microscan LVS 7000, Руководство по эксплуатации

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LVS-7000 Operations Manual Version 5.6.X
LVS-7000 Operations Manual Version 5.6.X Page 52 of 187
Sector Type 4: OCV Verify
The OCV (Optical Character Verification) sector type is used to score the print quality of the human readable
characters within a drawn sector. This sector type may be used with a color or monochrome camera.
1. Select OCV verify.
2. Select the desired direction.
3. Follow the steps below:
a. Select the desired font by choosing one of the options below:

To choose a specific font, click the Select font button and select the desired font.

To create, train and edit fonts, click the Create/Learn/Edit button. See the section above entitled
“Create / Learn / Edit Fonts” for more information.
b. Additional options include:

Invert (white chars on black) tells the sector to look for white characters on a dark background.

PreProcess (for noise) reduces noise and background contrast variances.

Dilate (for breaks) joins characters using a blurring and joining technique; it makes the characters
bold and darker. This option is useful for Dot Matrix-type printing.

Compare (font file to actual) displays an Actual vs. Font File image in the lower half of the screen.
The image shows the font file across the top of the image and the actual characters within the sector
down the left side. Differences between a font file and an actual character are highlighted in white
over black in the center of the screen. Each character is matched against the font file and given a
score. The character with the highest score is then used as the result.