No OCR results on good Image

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J S 2018-10-10

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https://ww2.mathworks.cn/matlabcentral/answers/423341-no-ocr-results-on-good-image

评论： J S 2018-10-10

open_cards.png

Why doesn't this give me any results??? Can somebody help me out? On other occasions, OCR hasn't given me any trouble at all, but now I'm stuck. The contrast of the image seems fine. Even better after sharpening:

I=imread('/image_file_path');
I=imsharpen(I);
close all
try
for i=1:5
roi= [20,5,30,40]+[54*(i-1),0,0,0];
card=ocr(I,roi,'Language','language_file_path');
card_val{i}=card.Text;
Iocr= insertObjectAnnotation(I, 'rectangle', roi,'');
figure;imshow(Iocr);  
%hold on
end
catch
disp('error')
end