Method for encoding and decoding image based on entry point in bitstream and apparatus using same
First Claim
Patent Images
1. A video encoding method, performed by an encoding apparatus, comprising:
- entropy-encoding entry point information specifying an entry point for decoding of at least one substream for a picture; and
transmitting the entropy-encoded information through a bitstream,wherein the entry point information include a number syntax element representing a number of offset syntax elements in a slice header,wherein the entry point information includes an offset syntax element representing the entry point of the substream when the number of the offset syntax elements is larger than 0,wherein the offset syntax element represents a number of bytes between two entry points,wherein the entry point information includes a length syntax element specifying a bits length of the offset syntax element when the number of the offset syntax elements is larger than 0,wherein a value of the number syntax element and a value of the length syntax element are encoded based on ue(v) descriptor and a value of the offset syntax element is encoded based on u(v) descriptor,wherein the value of the length syntax element plus one corresponds to the bits length of the offset syntax element, andwherein the value of the number syntax element corresponds to the number of offset syntax elements in the slice header.
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Abstract
An encoding method includes entropy-encoding offset information specifying an entry point for decoding of a substream when a picture is decoded by a plurality of substreams, and transmitting the entropy-encoded information in a bitstream. The offset information specifies the entry point of the substream in bytes.
10 Citations
19 Claims
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1. A video encoding method, performed by an encoding apparatus, comprising:
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entropy-encoding entry point information specifying an entry point for decoding of at least one substream for a picture; and transmitting the entropy-encoded information through a bitstream, wherein the entry point information include a number syntax element representing a number of offset syntax elements in a slice header, wherein the entry point information includes an offset syntax element representing the entry point of the substream when the number of the offset syntax elements is larger than 0, wherein the offset syntax element represents a number of bytes between two entry points, wherein the entry point information includes a length syntax element specifying a bits length of the offset syntax element when the number of the offset syntax elements is larger than 0, wherein a value of the number syntax element and a value of the length syntax element are encoded based on ue(v) descriptor and a value of the offset syntax element is encoded based on u(v) descriptor, wherein the value of the length syntax element plus one corresponds to the bits length of the offset syntax element, and wherein the value of the number syntax element corresponds to the number of offset syntax elements in the slice header. - View Dependent Claims (2, 3, 10, 11, 12, 13)
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4. A video decoding method, performed by a decoding apparatus, comprising:
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receiving entry point information specifying an entry point for decoding of at least one substream for a picture; and decoding at least one substreams based on the entry point information, wherein the entry point information include a number syntax element representing a number of offset syntax elements in a slice header, wherein the entry point information includes an offset syntax element representing the entry point of the substream when the number of the offset syntax elements is larger than 0, wherein the offset syntax element represents a number of bytes between two entry points, wherein the entry point information includes a length syntax element specifying a bits length of the offset syntax element when the number of the offset syntax elements is larger than 0, wherein a value of the number syntax element and a value of the length syntax element are decoded based on ue(v) descriptor and a value of the offset syntax element is decoded based on u(v) descriptor, and wherein the value of the length syntax element plus one corresponds to the bits length of the offset syntax element, and wherein the value of the number syntax element corresponds to the number of offset syntax elements in the slice header. - View Dependent Claims (5, 6, 7, 8, 9)
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14. An image decoding apparatus, comprising:
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a decoder configured to receive entry point information specifying an entry point for decoding of at least one substream for a picture, and to decode the at least one substream based on the entry point information, wherein the entry point information include a number syntax element representing a number of offset syntax elements in a slice header, wherein the entry point information includes an offset syntax element representing the entry point of the substream when the number of the offset syntax elements is larger than 0, wherein the offset syntax element represents a number of bytes between two entry points, wherein the entry point information includes a length syntax element specifying a bits length of the offset syntax element when the number of the offset syntax elements is larger than 0, wherein a value of the number syntax element and a value of the length syntax element are decoded based on ue(v) descriptor and a value of the offset syntax element is decoded based on u(v) descriptor, and wherein the value of the length syntax element plus one corresponds to the bits length of the offset syntax element, and wherein the value of the number syntax element corresponds to the number of offset syntax elements in the slice header. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification