extract text from images programmatically

Question

I am looking for a programmatic way to retrieve text on the images . I am not aware of any such tool if available already. I need to download the images first and then extra

Answer 1

Tesseract OCR can extract text from images. What exactly do you mean by extract?

Answer 2

OCR is a complex technology (image segmentation, angle correction, binarization, characters segmentation, analysis of combined and broken characters, dictionary checking, etc), but there are ready-to-use OCR engines, most of them are commercial, for instance:

• Most accurate (and expensive + royalty) - Abby OCR engine.
• Good accuracy (royalty) - OmniPage OCR engine.
• Good accuracy (royalty-free) - Nicomsoft CrystalOCR engine.
• Acceptable accuracy (free) - Tesseract OCR engine.