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US 8,135,062 B1Granted
Method and apparatus for QP modulation based on perceptual models for picture encoding
AssigneeMaxim Integrated Products, Inc.
InventorGuy Cote
Life of this patent
Estimating the term…
Abstract
A method for encoding a picture is disclosed. The method generally includes the steps of (A) generating at least one respective macroblock statistic from each of a plurality of macroblocks in the picture, (B) generating at least one global statistic from the picture and (C) generating a respective macroblock quantization parameter for each of the macroblocks based on both (i) the at least one respective macroblock statistic and (ii) said at least one global statistic.
Claims24
A method for encoding a picture, comprising the steps of:
- (A) generating at least one respective macroblock statistic from each of a plurality of macroblocks in said picture, the at least one respective macroblock statistic being associated with characteristics of the Human Visual System (HVS);
- (B) generating at least one global statistic from said picture, the at least one global statistic being an average value generated by averaging the at least one respective macroblock statistic for the plurality of macroblocks over the picture;
- and
- (C) generating a respective macroblock quantization parameter for each of said macroblocks based on both (i) said at least one respective macroblock statistic and (ii) said at least one global statistic,
- wherein each of said respective macroblock quantization parameters comprises a respective delta quantization parameter generated only from said at least one respective macroblock statistic and said at least one global statistic.
2 more elements
A system comprising:
- a processor configured to (i) generate at least one respective macroblock statistic from each of a plurality of macroblocks in a picture and (ii) generate at least one global statistic from said picture, the at least one respective macroblock statistic is associated with characteristics of the Human Visual System (HVS), and the at least one global statistic is an average value generated by averaging the at least one respective macroblock statistic for the plurality of macroblocks over the picture;
- and
- an encoder configured to generate a respective macroblock quantization parameter for each of said macroblocks based on both (i) said at least one respective macroblock statistic and (ii) said at least one global statistic,
- wherein each of said respective macroblock quantization parameters comprises a respective delta quantization parameter generated only from said at least one respective macroblock statistic and said at least one global statistic.
1 more element
A system comprising:
- means for generating at least one respective macroblock statistic from each of a plurality of macroblocks in a picture the at least one respective macroblock statistic is associated with characteristics of the Human Visual System (HVS),
- means for generating at least one global statistic from said picture, and the at least one global statistic is an average value generated by averaging the at least one respective macroblock statistic for the plurality of macroblocks over the picture;
- and
- means for generating a respective macroblock quantization parameter for each of said macroblocks based on both (i) said at least one respective macroblock statistic and (ii) said at least one global statistic,
- wherein each of said respective macroblock quantization parameters comprises a respective delta quantization parameter generated only from said at least one respective macroblock statistic and said at least one global statistic.
2 more elements
Dependencies are inferred from the claim text.