Patent ID: 7733524

Claim:
A monochromatic image processing method of background removal according to dynamical data, the method comprising the steps of: using a photo/text separation module to read in an Nth pixel band containing M pixel blocks stored in a memory module in sequence at time T 1 ; generating a block property for each pixel block in the M pixel blocks by photo/text separation module and storing them in the memory module, and generating pixel histogram data from the pixel data of pixel blocks with text property in the M pixel blocks and storing them in the memory module; using a dynamical look-up table generation module to determine black- and white-reference point sets corresponding to different copy modes according to the pixel histogram data and different parameters of mode properties; and using an image background removal module to select a look-up table corresponding to the block property of each pixel block in the M pixel blocks and simultaneously performing a background removal process for all pixel data on the Nth pixel band according to the look-up table at time T 2 ; wherein at time T 2 before all pixel data are processed, the photo/text separation module continues reading the (N+1)th pixel band containing M pixel blocks stored in the memory module for executing subsequent steps.