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how to extract data from table image?

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Meera V
Meera V 2019-1-8
评论： Image Analyst 2023-3-11
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Walter Roberson
Walter Roberson 2019-1-9
Train the ocr on that character set.
The images are pretty low quality.
Benjamin Ehrlich
Benjamin Ehrlich 2021-8-18
I have experienced the OCR having a really rough time with vertical and horizontal lines...

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回答（1 个）

Image Analyst
Image Analyst 2021-8-19
You need to have at least 20 lines in the numbers for ocr() to work -- it says so in the help. Also, you can get rid of lines by thresholding and removing the largest blob, but you might want to use them to extract each rectangle one at a time so you can do ocr on just that one rectangle. If you still need help, attach a higher resolution image
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Abdelrahman
Abdelrahman 2023-3-11
编辑：Abdelrahman 2023-3-11
Can you elaborate more how to get rid of the lines please?
Image Analyst
Image Analyst 2023-3-11
If the lines are connected to the edge of the image you can do
mask = grayImage > somethreshold;
mask = imclearborder(mask);
otherwise, the grid looks like it would be the biggest blob in the mask you can use bwareafilt
mask = mask & ~bwareafilt(mask, 1);

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