Restoration for video coding with self-guided filtering and subspace projection
AssigneeGoogle Inc.
InventorDebargha Mukherjee
Life of this patent
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Abstract
A portion Y of a degraded frame is restored using a projection operation that uses a first projection parameter α, a second projection parameter β, and at least two guide portions. Restoring the portion Y of the degraded frame includes generating, using first restoration parameters, a first guide portion Y1 for the portion Y; generating, using second restoration parameters, a second guide portion Y2 for the portion Y; and generating a reconstructed portion YR, wherein the projection operation is based on α(Y1−Y)+β(Y2−Y).
Claims20
A device, comprising:
- a processor configured to:
- restore a portion Y of a degraded frame using a projection operation that uses a first projection parameter α, a second projection parameter β, and at least two guide portions, wherein to restore the portion Y of the degraded frame comprises to:
- generate, using first restoration parameters, a first guide portion Y1 for the portion Y;
- generate, using second restoration parameters, a second guide portion Y2 for the portion Y;
- and
- generate a reconstructed portion YR, wherein the projection operation is based on α(Y1−Y)+β(Y2−Y).
A method, comprising:
- restoring a portion Y of a degraded frame using a projection operation that uses a first projection parameter α, a second projection parameter β, and at least two guide portions, wherein restoring the portion Y of the degraded frame comprises:
- generating, using first restoration parameters, a first guide portion Y1 for the portion Y;
- generating, using second restoration parameters, a second guide portion Y2 for the portion Y;
- and
- generating a reconstructed portion YR, wherein the projection operation is based on α(Y1−Y)+β(Y2−Y).
A non-transitory computer-readable storage medium having stored thereon an encoded bitstream, wherein the encoded bitstream is configured for decoding by operations comprising:
- restoring a portion Y of a degraded frame using a projection operation that uses a first projection parameter α, a second projection parameter β, and at least two guide portions, wherein restoring the portion Y of the degraded frame comprises:
- generating, using first restoration parameters, a first guide portion Y1 for the portion Y;
- generating, using second restoration parameters, a second guide portion Y2 for the portion Y;
- and
- generating a reconstructed portion YR, wherein the projection operation is based on α(Y1−Y)+β(Y2−Y).
Dependencies are inferred from the claim text.