System, medium, and method encoding and/or decoding image data

Details System, medium, and method encoding and/or decoding image data System, medium, and method encoding and/or decoding image data

2006-07-12

2010-12-07

Ahmed, Samir A. (Department: 2624)

Image analysis

Image compression or coding

Quantization

C382S232000, C382S233000, C382S239000, C382S248000, C382S250000

Reexamination Certificate

active

07848586

ABSTRACT:
A system, medium, and method encoding and/or decoding image data. The image data encoding may include a transformer transforming pixel values of an image in the time domain to pixel values in the frequency domain, a quantization coefficient determiner determining a quantization coefficient corresponding to the number of bits per pixel of the image by adjusting a quantization variable defined by a user, a quantization unit quantizing the pixel values transformed by the transformer based on the quantization coefficient determined by the quantization coefficient determiner, and an entropy encoder generating a bitstream of the quantized pixel values.

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