In conclusion, Tesseract is an excellent resource for developers, but it is not a complete OCR library when dealing with scanned or photographed images because these images need to be processed so ...

If Tesseract encounters an image which is rotated, skewed, is of a low DPI, scanned, or has background noise, it becomes almost impossible for Tesseract to get data from that image.

Comparing Iron OCR to Tesseract for C# and .Net Software Projects Tesseract is an excellent academic OCR library available for free for almost all use cases to developers.