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US 2025/0220167 A1Published application
Method and device for encoding/decoding image
AssigneeIntellectual Discovery Co., Ltd.
InventorsDong Gyu SIM, Ho Chan Ryu, Yong Jo Ahn
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Abstract
A device for encoding/decoding the image according to the present invention includes an intra prediction module configured to: determine an intra prediction mode of a current block; determine a scanning order of multiple sub blocks in the current block on the basis of the determined intra prediction mode; and perform intra prediction of the current block on the basis of the determined scanning order.
Claims7
An image decoding method comprising:
- determining an intra prediction mode of a current block;
- determining whether to apply a first filter for neighboring samples of the current block based on the intra prediction mode of the current block;
- filtering the neighboring samples of the current block to obtain filtered reference samples based on whether the first filter is applied;
- selecting a second filter to be applied to the filtered reference samples based on the intra prediction mode;
- applying the selected second filter to part of the filtered reference samples to obtain interpolated reference samples;
- and
- generating a prediction block of the current block based on the interpolated reference samples;
- generating a residual block of the current block by decoding a bitstream;
- and
- reconstructing the current block based on the prediction block and the residual block,
- wherein the second filter is an interpolation filter which uses four samples among the filtered reference samples, and
- wherein a coefficient of the second filter is determined based on a direction of the intra prediction mode of the current block.
9 more elements
An image encoding method comprising:
- determining an intra prediction mode of a current block;
- determining whether to apply a first filter for neighboring samples of the current block based on the intra prediction mode of the current block;
- filtering the neighboring samples of the current block to obtain filtered reference samples based on whether the first filter is applied;
- selecting a second filter to be applied to the filtered reference samples based on the intra prediction mode;
- applying the selected second filter to part of the filtered reference samples to obtain interpolated reference samples;
- and
- generating a prediction block of the current block based on the interpolated reference samples;
- generating a residual block of the current block based on the prediction block;
- and
- encoding the residual block of the current block into a bitstream,
- wherein the second filter is an interpolation filter which uses four samples among the filtered neighboring samples, and
- wherein a coefficient of the second filter is determined based on a direction of the intra prediction mode of the current block.
9 more elements
A method of transmitting a bitstream that is generated by an image encoding method with an encoding apparatus, wherein the image encoding method comprises:
- determining an intra prediction mode of a current block;
- determining whether to apply a first filter for neighboring samples of the current block based on the intra prediction mode of the current block;
- filtering the neighboring samples of the current block to obtain filtered reference samples based on whether the first filter is applied;
- applying a second filter to part of the filtered reference samples to obtain interpolated reference samples;
- generating a prediction block of the current block based on the interpolated reference samples;
- generating a residual block of the current block based on the prediction block;
- and
- encoding the residual block of the current block into a bitstream,
- wherein the second filter is an interpolation filter which uses four samples among the filtered neighboring samples, and
- wherein a coefficient of the second filter is determined based on a direction of the intra prediction mode of the current block.
7 more elements
Dependencies are inferred from the claim text.