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US 10,856,012 B2Granted
Method and apparatus for predicting video signal using predicted signal and transform-coded signal
AssigneeLG Electronics Inc.
InventorsOnur Gonen Guleryuz, Amir Said, Sehoon Yea
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Abstract
Disclosed herein is a method of encoding a video signal, comprising receiving an original video signal; comparing the original video signal with available reconstructed signals; generating a transform-coded correction signal based on a result of the comparison; generating a prediction signal based on the transform-coded correction signal and the available reconstructed signals; and reconstructing a signal by adding the transform-coded correction signal to the prediction signal.
Claims18
A method of encoding a video signal, comprising:
- receiving the video signal including a current block, wherein the current block includes at least one layer, and the at least one layer includes pixels arranged in horizontal and vertical directions based on a pixel placed in a diagonal direction within the current block;
- obtaining a prediction signal for a current layer Lk based on reconstructed pixels of all previous layers L1, . . . , Lk−1;
- obtaining a residual signal for the current layer Lk based on the prediction signal;
- obtaining an optimal quantized coefficient for the current layer Lk based on an optimization process for the residual signal;
- and
- entropy-encoding the optimal quantized coefficient for the current layer Lk,
- wherein the optimal quantized coefficient is a value minimizing a difference between a quantized coefficient for the current layer Lk and a quantized coefficient for a previous layer Lk−1.
4 more elements
A method of decoding a video signal including a current block, comprising:
- receiving the video signal including an optimal quantized coefficient for a current layer Lk, wherein the current block includes at least one layer, and the at least one layer includes pixels arranged in horizontal and vertical directions based on a pixel placed in a diagonal direction within the current block;
- obtaining a residual signal for the current layer Lk based on the optimal quantized coefficient;
- obtaining a prediction signal for the current layer Lk based on reconstructed pixels of all previous layers L1, . . . , Lk−1;
- and
- reconstructing the video signal by adding the residual signal to the prediction signal,
- wherein the optimal quantized coefficient is a value which has minimized a difference between a quantized coefficient for the current layer Lk and a quantized coefficient for a previous layer Lk−1.
3 more elements
An apparatus of encoding a video signal, comprising:
- a processor configured to
- receive the video signal including a current block,
- obtain a prediction signal for a current layer Lk based on reconstructed pixels of all previous layers L1, . . . , Lk−1,
- obtain a residual signal for the current layer Lk based on the prediction signal,
- obtain an optimal quantized coefficient for the current layer Lk based on an optimization process for the residual signal, and
- entropy-encode the optimal quantized coefficient for the current layer Lk,
- wherein the current block includes at least one layer, and the at least one layer includes pixels arranged in horizontal and vertical directions based on a pixel placed in a diagonal direction within the current block, and
- wherein the optimal quantized coefficient is a value minimizing a difference between a quantized coefficient for the current layer Lk and a quantized coefficient for a previous layer Lk−1.
5 more elements
An apparatus of decoding a video signal including a current block, comprising:
- a processor configured to
- receive the video signal including an optimal quantized coefficient for a current layer Lk,
- obtain a residual signal for the current layer Lk based on the optimal quantized coefficient,
- obtain a prediction signal for the current layer Lk based on reconstructed pixels of all previous layers L1, . . . , Lk−1, and
- reconstruct the video signal by adding the residual signal to the prediction signal,
- wherein the current block includes at least one layer, and the at least one layer includes pixels arranged in horizontal and vertical directions based on a pixel placed in a diagonal direction within the current block, and
- wherein the optimal quantized coefficient is a value which has minimized a difference between a quantized coefficient for the current layer Lk and a quantized coefficient for a previous layer Lk−1.
4 more elements
Dependencies are inferred from the claim text.