What is Tesseract and where are its quality limits?

Tesseract is an open-source optical character recognition (OCR) system originally developed by HP and later supported by Google. It allows extracting text from images and is widely used due to its accessibility and support for many languages.

Quality boundaries of Tesseract:

• Works well with clear, high-contrast images with simple fonts and minimal distortions.
• Recognition quality decreases with poor image quality: noise, blurriness, distortions, complex backgrounds.
• Does not always handle handwritten text or decorative fonts well.
• Requires pre-processing of images (binarization, alignment) to improve results.

Tesseract is excellent for recognizing printed text in documents, scans, and photographs, but for complex cases, additional processing or more specialized models may be needed.