how to extract data from table image?

[Walter Roberson]

ocr()

[Meera V]

I performed ocr. it didnt extract properly

[Walter Roberson]

Train the ocr on that character set.

The images are pretty low quality.

[Benjamin Ehrlich]

I have experienced the OCR having a really rough time with vertical and horizontal lines...

Answer 1

[Image Analyst]

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

[Abdelrahman]

Can you elaborate more how to get rid of the lines please?

[Image Analyst]

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);