Error diffusion method and hardware architecture

Details Error diffusion method and hardware architecture Error diffusion method and hardware architecture

2008-11-20

2009-12-01

Couso, Jose L (Department: 2624)

Image analysis

Image compression or coding

Quantization

Reexamination Certificate

active

07627188

ABSTRACT:
A system and method for performing threshold stamping are disclosed. First and second threshold values corresponding to first and second pixels may be retrieved from a threshold memory. A plurality of upscaled threshold values may optionally be computed based on the first threshold value and the second threshold value. An (upscaled) threshold value may be updated at each of one or more first register blocks. A binary pixel value may be computed based at least in part on the first updated threshold value. The first updated threshold value may be updated at each of one or more second register blocks. A downscaled threshold value may optionally be computed based on a plurality of second updated threshold values. The downscaled threshold value or second updated threshold value may be damped in a damping circuit, and the damped threshold value may be stored in the threshold memory.

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