Method and apparatus for encoding and decoding video signals in intra-base-layer prediction mode by selectively applying intra-coding
AssigneeSamsung Electronics Co., Ltd.
InventorsSang-chang Cha, Woo-jin Han
Life of this patent
Estimating the term…
Abstract
A method and apparatus for encoding and decoding macroblocks in an intra-base layer prediction mode by selectively applying intra-coding are provided. The method includes the steps of calculating a difference between an input frame and a base layer frame calculated from the input frame and obtaining residual signals, converting the residual signals using an intra-coding method, and generating an enhancement layer frame including the converted residual signals.
Claims43
A method of encoding video signals in intra-Base-Layer (BL) prediction mode by selectively applying intra-coding in a multilayer-based video encoder, the method comprising:
- (a) calculating a difference between an input frame and a base layer frame calculated from the input frame and obtaining residual signals;
- (b) converting the residual signals using an intra-coding method;
- and
- (c) generating an enhancement layer frame including the converted residual signals.
A method of encoding video signals in intra-Base-Layer (BL) prediction mode by selectively applying intra-coding in a multilayer-based video encoder, the method comprising:
- (a) calculating a difference between an input frame and a base layer frame calculated from the input frame and obtaining residual signals;
- (b) determining if resolution of the base layer frame is identical to that of the enhancement layer frame and converting the residual signals using an intra-coding method if the resolution is identical;
- (c) generating an enhancement layer frame including the converted residual signals;
- and
- (d) comparing results converted using an intra-coding method with results converted using an inter-coding method.
A method of decoding video signals in intra-BL prediction mode by selectively applying intra-coding in a multilayer-based video decoder, the method comprising:
- (a) receiving a base layer frame and an enhancement layer frame;
- (b) performing an inverse transform when residual signals of the enhancement layer frame are encoded using an intra-coding method;
- and
- (c) performing restoration by adding the inversely transformed residual signals to image signals of the base layer frame.
A method of decoding video signals in intra-BL prediction mode by selectively applying intra-coding in a multilayer-based video decoder, the method comprising:
- (a) receiving a base layer frame and an enhancement layer frame;
- (b) determining if resolution of the base layer frame is identical to that of the enhancement layer frame and performing an inverse transform when residual signals of the enhancement layer frame are encoded using an intra-coding method if the resolution is identical;
- and
- (c) performing restoration by adding the inversely transformed residual signals to image signals of the base layer frame.
An encoder comprising:
- a base layer encoder generating a base layer frame from an input frame;
- and
- an enhancement layer encoder generating an enhancement layer frame from the input frame;
- wherein, at a time of generating a macroblock of the enhancement layer frame, the enhancement layer encoder comprises a conversion unit performing intra-coding on residual signals obtained by calculating a difference between a macroblock of the base layer frame, which corresponds to the macroblock of the enhancement layer frame, and a macroblock of the input frame.
A decoder comprising:
- a base layer decoder for restoring a base layer frame;
- and
- an enhancement layer decoder for restoring an enhancement layer frame;
- wherein the enhancement layer decoder performs an inverse transform on residual signals and performs restoration by adding inversely transformed residual signals to image signals of the restored base layer frame, thus restoring the image signals when the residual signals are encoded using an intra-coding method.
A computer readable medium having stored therein a program for encoding video signals in intra-Base-Layer (BL) prediction mode by selectively applying intra-coding in a multilayer-based video encoder, said program including computer executable instructions for performing steps comprising:
- (a) calculating a difference between an input frame and a base layer frame calculated from the input frame and obtaining residual signals;
- (b) converting the residual signals using an intra-coding method;
- and
- (c) generating an enhancement layer frame including the converted residual signals.
A computer readable medium having stored therein a program for encoding video signals in intra-Base-Layer (BL) prediction mode by selectively applying intra-coding in a multilayer-based video encoder, said program including computer executable instructions for performing steps comprising:
- (a) calculating a difference between an input frame and a base layer frame calculated from the input frame and obtaining residual signals;
- (b) determining if resolution of the base layer frame is identical to that of the enhancement layer frame and converting the residual signals using an intra-coding method if the resolution is identical;
- (c) generating an enhancement layer frame including the converted residual signals;
- and
- (d) comparing results converted using an intra-coding method with results converted using an inter-coding method.
A computer readable medium having stored therein a program for decoding video signals in intra-BL prediction mode by selectively applying intra-coding in a multilayer-based video decoder, said program including computer executable instructions for performing steps comprising:
- (a) receiving a base layer frame and an enhancement layer frame;
- (b) performing an inverse transform when residual signals of the enhancement layer frame are encoded using an intra-coding method;
- and
- (c) performing restoration by adding the inversely transformed residual signals to image signals of the base layer frame.
A computer readable medium having stored therein a program for decoding video signals in intra-BL prediction mode by selectively applying intra-coding in a multilayer-based video decoder, said program including computer executable instructions for performing steps comprising:
- (a) receiving a base layer, frame and an enhancement layer frame;
- (b) determining if resolution of the base layer frame is identical to that of the enhancement layer frame and performing an inverse transform when residual signals of the enhancement layer frame are encoded using an intra-coding method if the resolution is identical;
- and
- (c) performing restoration by adding the inversely transformed residual signals to image signals of the base layer frame.
Dependencies are inferred from the claim text.