 | Read/Verify Text Concepts |
The Read/Verify Text step is based on a technique called Optical Character Recognition (OCR). OCR consists of three processes:
- A training process during which you teach the software the types of characters and/or patterns you want to detect in the image during the reading procedure.
- A reading process during which Vision Builder AI analyzes an image to determine if the objects match the characters you trained. Vision Builder AI reads characters in an image using the character set that you created during the training process.
- A verification process during which Vision Builder AI compares the characters in the image to reference characters specified in a character set file and returns a score. The verification score indicates how closely the character in the image matches the reference character.
When you click the Read/Verify Text step in the Identify Parts tab, you can launch the NI OCR Training Interface to train characters. Use the NI OCR Training Interface to learn characters and/or patterns you want to detect. You can access help for the NI OCR Training Interface from within the training interface itself.
After you train for the characters, use the Read/Verify Text property page in Vision Builder AI to configure the Read/Verify Text step to compare characters in an image to the characters you learned in the NI OCR Training Interface.
Refer to the NI Vision Concepts Manual for more information about OCR and the descriptions of the results returned by the Read/Verify Text step.