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US 12,015,796 B2Granted
Image coding method on basis of entry point-related information in video or image coding system
AssigneeLG Electronics Inc.
InventorHendry Hendry
Life of this patent
Estimating the term…
Abstract
According to the disclosures of the present document, entry point-related information/parameter can be signaled by means of upper-level syntax, thereby allowing the amount of data necessary to be signaled for video/image coding to be reduced and coding efficiency to be increased.
Claims5
An image decoding method performed by a decoding device, the method comprising:
- obtaining image information through a bitstream, wherein the image information includes entry point related information;
- deriving at least one entry point in a current picture based on the entry point related information;
- and
- decoding the current picture based on the at least one entry point,
- wherein the entry point related information includes offset length information and entry point offset information, the offset length information is related to a number of bits of the entry point offset information,
- wherein the at least one entry point is derived based on the offset length information and the entry point offset information,
- wherein the entry point related information includes an entry point offset present flag related to whether entry point offsets are signaled,
- wherein based on a case where a value of the entry point offset present flag is 1, a number of entry points in a current slice is derived,
- wherein based on a case where the number of entry points is greater than 0, the offset length information and the entry point offset information are included in a slice header for the current slice,
- wherein the entry point offset present flag is included in a sequence parameter set (SPS),
- wherein the entry point related information includes a first no-picture partition flag and a second no-picture partition flag, and the first no-picture partition flag is included in the SPS, and the second no-picture partition flag is included in a picture parameter set (PPS), and
- wherein a value of the second no-picture partition flag included in the PPS is configured to be the same as a value of the first no-picture partition flag included in the SPS referenced by the PPS.
9 more elements
An image encoding method performed by an encoding device, the method comprising:
- deriving at least one entry point in a current picture;
- generating entry point related information based on the at least one entry point;
- and
- encoding image information including the entry point related information,
- wherein the entry point related information includes offset length information and entry point offset information, the offset length information is related to a number of bits of the entry point offset information,
- wherein the entry point related information includes an entry point offset present flag related to whether entry point offsets are signaled,
- wherein based on a case where a value of the entry point offset present flag is 1, a number of entry points in a current slice is derived,
- wherein based on a case where the number of entry points is greater than 0, the offset length information and the entry point offset information are included in a slice header for the current slice,
- wherein the entry point offset present flag is included in a sequence parameter set (SPS),
- wherein the entry point related information includes a first no-picture partition flag and a second no-picture partition flag, and the first no-picture partition flag is included in the SPS, and the second no-picture partition flag is included in a picture parameter set (PPS), and
- wherein a value of the second no-picture partition flag included in the PPS is configured to be the same as a value of the first no-picture partition flag included in the SPS referenced by the PPS.
8 more elements
A non-transitory computer-readable digital storage medium storing a bitstream generated by an image encoding method, the method comprising:
- deriving at least one entry point in a current picture;
- generating entry point related information based on the at least one entry point;
- and
- encoding image information including the entry point related information to generate the bitstream,
- wherein the entry point related information includes offset length information and entry point offset information, the offset length information is related to a number of bits of the entry point offset information,
- wherein the entry point related information includes an entry point offset present flag related to whether entry point offsets are signaled,
- wherein based on a case where a value of the entry point offset present flag is 1, a number of entry points in a current slice is derived,
- wherein based on a case where the number of entry points is greater than 0, the offset length information and the entry point offset information are included in a slice header for the current slice,
- wherein the entry point offset present flag is included in a sequence parameter set (SPS),
- wherein the entry point related information includes a first no-picture partition flag and a second no-picture partition flag, and the first no-picture partition flag is included in the SPS, and the second no-picture partition flag is included in a picture parameter set (PPS), and
- wherein a value of the second no-picture partition flag included in the PPS is configured to be the same as a value of the first no-picture partition flag included in the SPS referenced by the PPS.
8 more elements
Dependencies are inferred from the claim text.