"pencil written notes that bleed outside cell borders, curve around borders, etc.? Stamps and symbols (watermarks) across tables?" "The Worst Image" is a close

"pencil written notes that bleed outside cell borders, curve around borders, etc.? Stamps and symbols (watermarks) across tables?" "The Worst Image" is a close match to that, except it is a print. Regarding increasing degradation - as stated above, the OCR engine is not proprietary - we confined ourselves to detect the structure at this moment, and started with the most common problems.