OCR issue with Color format

henryma · December 2020

Is there a reason why color caused issue with OCR? Even though the font is readable, OCR have issue with reading it. If I binarize the image then it works fine; however there are time when image have highlighting over the text which I can read from the image, but binarize will cause issue. Is there a reason why color shading and the correct font color to make it readable to a human, but OCR cant read it?

Example of original image value that OCR have issue reading

Image: https://us.v-cdn.net/6030453/uploads/editor/mw/tjkz8nc35zcx.png

But if I binarize it then it will read it

Image: https://us.v-cdn.net/6030453/uploads/editor/5y/jk8mzax3ctun.png

problem with binarize is if there is highlighting it will be an issue.