Setting Parameters to Improve OCR Training

Updated May 6, 2019

Reported In


  • Vision Assistant
  • Vision Development Module

Issue Details

  • What is the meaning of a specific NI OCR Training Interface Parameter?
  • Which parameters may be useful to tune in order to improve the character recognition in the ROI?


Before you start working on adjusting parameters to improve OCR training, make sure the image acquired has a good definition and enough contrast between the characters and the background. Refer to the Improve an Image document on NI Vision for LabVIEW Help.

After you make sure you image is well enough to pass through the OCR training algorithm, you can do a fine tuning by adjusting the OCR settings found in the tabs on the lower side of the NI OCR Training Interface. Go to Help>>Online Help on the menu bar and then, on the contents tab, expand the Configuring OCR Settings section for tutorials and more detailed description of all parameters.