image processing to improve tesseract OCR accuracy

[Deepak Kumar]

I've been using tesseract to convert screenshot image into text. the image is attached here , and I'm looking for tips on what sort of image processing/image enhancement might improve the results and helpful for number recognition from image. I've noticed that text in the image looks find and perfect to read through eye but when i pass it to tesseract it is unable to find text from image.

[Rick Leir]

The simpler method: convert to greyscale then binarize with the appropriate threshold.

However if the colors convert to similar grey values then you need to choose a hue (color) and brighten it, then choose the contrasting hue and darken it,

[Quan Nguyen]

The number was recognized after grayscale, binarize, and invert color steps.