Method and apparatus for video coding using spiral scan order
AssigneesHyundai Motor Company, Kia Corporation, Digitalinsights Inc.
InventorsYong Jo Ahn, Jong Seok Lee, Seung Wook Park
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Abstract
A video coding method and an apparatus using a spiral scan order are disclosed. The video coding method and the apparatus perform encode/decode target blocks in a spiral scan order for allowing the blocks located centrally of a video frame to make use of more previously reconstructed neighboring blocks.
Claims16
A method performed by a video encoding apparatus for encoding a current layer, the method comprising:
- determining a block-scan scheme for the current layer, the block-scan scheme including a location of a start block for blocks in which the current layer is divided into a same size, and a scan order based on the start block, wherein the scan order is one of a horizontal scan order, a vertical scan order, a clockwise spiral scan order, or a counterclockwise spiral scan order;
- encoding a current block representing each of the blocks following the block-scan scheme;
- determining reference sample lines for the current block after the encoding;
- determining line buffers for storing the reference sample lines;
- and
- storing information on the reference sample lines in the line buffers.
A method performed by a video decoding apparatus for decoding a current layer, the method comprising:
- determining block scan information for the current layer, the block scan information including a location of a start block for blocks in which the current layer is divided into a same size, and a scan order based on the start block, wherein the scan order is one of a horizontal scan order, a vertical scan order, a clockwise spiral scan order, or a counterclockwise spiral scan order;
- decoding a current block representing each of the blocks following the block scan information;
- determining reference sample lines for the current block after the decoding;
- determining line buffers for storing the reference sample lines;
- and
- storing information on the reference sample lines in the line buffers.
A computer-readable recording medium storing a bitstream generated by a video encoding method for encoding a current layer, the video encoding method comprising:
- determining a block-scan scheme for the current layer, the block-scan scheme including a location of a start block for blocks in which the current layer is divided into a same size, and a scan order based on the start block, wherein the scan order is one of a horizontal scan order, a vertical scan order, a clockwise spiral scan order, or a counterclockwise spiral scan order;
- encoding a current block representing each of the blocks following the block-scan scheme;
- determining reference sample lines for the current block after the encoding;
- determining line buffers for storing the reference sample lines;
- and
- storing information on the reference sample lines in the line buffe
Dependencies are inferred from the claim text.