How much accuracy you will get by HMI OCR

OCR with all of its pros, has some cons compared to other data gathering options, Although it might have some errors in reading, in some ways, it can be improved by some methods like:

Filters: like averaging or median filter

Better Cameras: With more resolution and more features the result of OCR would be better

Customized and tunned algorithms: If the accuracy of data is very important, then you should tune the algorithm based on the case needs

Normal Monitait OCR feature can give about 72% accuracy on 6 data per minute data acquisition, it can be improved to 98% based on the explained methods