Methods and Systems for Maintenance and Use of Coded Block Pattern Information
First Claim
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1. A method for combining layers in a multi-layer bitstream, said method comprising:
- a) receiving a bitstream comprising encoded image coefficients and encoded block pattern (Cbp) information wherein said Cbp information identifies regions in said bitstream that comprise transform coefficients;
b) decoding said Cbp information;
c) parsing said bitstream by using said Cbp information to identify bitstream regions comprising transform coefficients;
d) scaling first-layer transform coefficients in said bitstream to match a characteristic of a second-layer in said bitstream;
e) adding said scaled, first-layer transform coefficients to second-layer transform coefficients to form combined coefficients in a combined layer; and
f) calculating combined Cbp information for said combined layer wherein said combined Cbp information identifies regions in said combined layer that comprise transform coefficients.
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Abstract
Embodiments of the present invention comprise systems and methods for managing and combining layers in a multi-layer bitstream.
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Citations
22 Claims
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1. A method for combining layers in a multi-layer bitstream, said method comprising:
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a) receiving a bitstream comprising encoded image coefficients and encoded block pattern (Cbp) information wherein said Cbp information identifies regions in said bitstream that comprise transform coefficients; b) decoding said Cbp information; c) parsing said bitstream by using said Cbp information to identify bitstream regions comprising transform coefficients; d) scaling first-layer transform coefficients in said bitstream to match a characteristic of a second-layer in said bitstream; e) adding said scaled, first-layer transform coefficients to second-layer transform coefficients to form combined coefficients in a combined layer; and f) calculating combined Cbp information for said combined layer wherein said combined Cbp information identifies regions in said combined layer that comprise transform coefficients. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for combining layers in a multi-layer bitstream, said system comprising:
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g) a receiver for receiving a bitstream comprising encoded image coefficients and encoded block pattern (Cbp) information wherein said Cbp information identifies regions in said bitstream that comprise transform coefficients; h) a decoder for decoding said Cbp information; i) a parser for parsing said bitstream by using said Cbp information to identify bitstream regions comprising transform coefficients; j) a scaler for scaling first-layer transform coefficients in said bitstream to match a characteristic of a second-layer in said bitstream; k) an adder for adding said scaled, first-layer transform coefficients to second-layer transform coefficients to form combined coefficients in a combined layer; and l) a calculator for calculating combined Cbp information for said combined layer wherein said combined Cbp information identifies regions in said combined layer that comprise transform coefficients. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification