Can IMAQ Vision OCR recognize colons, semicolos, dots, etc ?

[Pacsoft]

Does someone know an easy way to use NI VIsion's OCR algorithms to recognize colons, semicolons, parenthesis, etc ? I have to read a cluster's alphanumeric display and need to read all ascii characters, not only alphabet letters and numbers.

[BruceAmmons]

You can train the OCR to recognize anything.  You just tell it what each character is when you train it.  You can even train it to recognize logos and symbols.

Bruce

[Jianmin]

When I train the OCR, it did not read "." . I think it may be too small. I tried to change minimum character size and character space. I attached the image with this message. Can you try? Thanks.

Jim

[BruceAmmons]

I also think it is too small.  You may be able to set the minimum character size to one, as well as min height and min width.

If you are inspecting a cluster display, you need to have a minimum of 2x2 pixels for each pixel in the display to get an accurate representation of the display.  This will increase your character size.  You may have to go with even higher resolution to get OCR to work on the display.

Bruce

[Jianmin]

Thanks for your comments and I will try different ways. -Jianmin