Recreating is not going to be close enough for a pixel comparison. First of all that requires also detecting and recreating font, font variation, style and exac

Recreating is not going to be close enough for a pixel comparison. First of all that requires also detecting and recreating font, font variation, style and exact positioning. But more importantly he entire reason why OCR is challenging is because there's a lot of variation that happens between rasterization in the source system and scanning at the end. Especially if you are doing OCR on actual printed documents, which is really the only unsolved challenge from conventional OCR.