OCR unable to read 0×0 empty char array

I wrote a code in MSER algorithm. I got it successful for one image, however, for other one, it reads: 0×0 empty char array. The only change I made was the input image and slight tuning in MSER. How can the OCR fail? Thanks in advance

[Rik]

Have a read here and here. It will greatly improve your chances of getting an answer.

Answer 1

[Mahesh Taparia]

Hi

I am assuming OCR is not working and you are getting an empty array. Sometimes it require preprocessing to improve the result. You can refer to this documentation for that.