undefined function or method 'ocr' for input arguments of type 'unit8'

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kishore kumar
kishore kumar 2014-5-23
评论： kishore kumar 2014-5-26
I am trying to recognize a letter inside the image, I read a .png file and wrote the code as
ocrResults=ocr(im,roi);
i got the error as follows undefined function or method 'ocr' for input arguments of type 'unit8' how could i fix the problem
  2 个评论
John D'Errico
John D'Errico 2014-5-23
You MIGHT get that error for uint8 arguments. unit8 arguments are something that will be more difficult to solve.

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回答（2 个）

Sean de Wolski
Sean de Wolski 2014-5-23
ocr was released in the Computer Vision System Toolbox in R2014a so if you are on an older release or don't have CVST, you will have to upgrade.
Azzi Abdelmalek
Azzi Abdelmalek 2014-5-23
编辑：Azzi Abdelmalek 2014-5-23
Try
ocrResults=ocr(double(im),roi);

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