Image encoding apparatus and quantization control method

Details Image encoding apparatus and quantization control method Image encoding apparatus and quantization control method

2004-09-30

2009-10-20

Dang, Duy M (Department: 2624)

Image analysis

Image compression or coding

Quantization

C382S251000

Reexamination Certificate

active

07606436

ABSTRACT:
An image encoding apparatus includes a quantization control section that supplies a rounded Q-scale to a quantization section for quantizing each macroblock according to the rounded Q-scale. A Q-scale is generated for each macroblock based on the amount of generated codes produced by encoding. The Q-scale is rounded within a set range by a rounding control section. The rounded Q-scale is smaller in amount than the Q-scale. Since the same Q-scale values will continue in succession, these can be omitted from a stream, allowing the reduced amount of quantization information and the increased amount of information allocated to images.

REFERENCES:
patent: 5629780 (1997-05-01), Watson
patent: 6496607 (2002-12-01), Krishnamurthy et al.
patent: 4-257185 (1992-09-01), None
patent: 2001-025008 (2001-01-01), None
patent: WO 02/080567 (2002-10-01), None
Test Model 5, Draft Revision 2, “10 Rate Control and Quantization Control” (Apr. 7, 1993).

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