WO2022247705A1 - 一种点云属性信息的预测编解码方法及装置 - Google Patents
一种点云属性信息的预测编解码方法及装置 Download PDFInfo
- Publication number
- WO2022247705A1 WO2022247705A1 PCT/CN2022/093617 CN2022093617W WO2022247705A1 WO 2022247705 A1 WO2022247705 A1 WO 2022247705A1 CN 2022093617 W CN2022093617 W CN 2022093617W WO 2022247705 A1 WO2022247705 A1 WO 2022247705A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- attribute information
- points
- information
- point
- prediction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
- H04N13/161—Encoding, multiplexing or demultiplexing different image signal components
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/597—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/001—Model-based coding, e.g. wire frame
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/004—Predictors, e.g. intraframe, interframe coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/146—Data rate or code amount at the encoder output
- H04N19/149—Data rate or code amount at the encoder output by estimating the code amount by means of a model, e.g. mathematical model or statistical model
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
- H04N19/463—Embedding additional information in the video signal during the compression process by compressing encoding parameters before transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
- H04N19/51—Motion estimation or motion compensation
- H04N19/513—Processing of motion vectors
- H04N19/517—Processing of motion vectors by encoding
- H04N19/52—Processing of motion vectors by encoding by predictive encoding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
- H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N2013/0074—Stereoscopic image analysis
- H04N2013/0081—Depth or disparity estimation from stereoscopic image signals
Definitions
- the existing methods only use the attribute information of adjacent points in the geometric space for prediction, and do not consider the discontinuity of the actual scene and the correlation between other information and attribute information.
- the prediction residual of the obtained attribute information is large, the prediction accuracy is low, and there are many outliers and jump values, which affect the coding efficiency.
- the present invention provides a method and device for predictive encoding and decoding of point cloud attribute information.
- the technical problem to be solved in the present invention is realized through the following technical solutions:
- a predictive coding method for point cloud attribute information comprising:
- an adaptive prediction list of point cloud attribute information is established, including:
- several points are selected from the encoded points according to certain rules, and the prediction list is updated according to the attribute information of the selected points, including:
- the above m points are screened according to the second information of the point, and the attribute information of the selected point is inserted into the prediction list; otherwise, the above The attribute information of m points is inserted into the prediction list.
- the above-mentioned m points are screened according to the second information of the points, and the attribute information of the selected points is inserted into the prediction list, including:
- the above-mentioned t points are screened according to the third information of the point, and the attribute information of the selected point is inserted into the prediction list; otherwise, the above-mentioned The attribute information of t points is inserted into the prediction list.
- the above-mentioned t points are screened according to the third information of the points, and the attribute information of the selected points is inserted into the prediction list, including:
- a point whose third information is closest to the current point to be encoded is selected, and the attribute information of this point is inserted into the prediction list.
- the first information is the depth information of the point or the spatial position of the point
- the third information is the azimuth angle information of the point.
- the prediction mode and the prediction residual are encoded to obtain code stream information, including:
- Another embodiment of the present invention provides a device for predictive encoding of point cloud attribute information, including:
- the first calculation module is used to establish an adaptive prediction list of point cloud attribute information
- An encoding module configured to encode the prediction mode and the prediction residual to obtain code stream information.
- the attribute information of the point cloud is reconstructed by using the predicted value and the predicted residual obtained by decoding.
- Another embodiment of the present invention also provides a device for predictive decoding of point cloud attribute information, including:
- the second data acquisition module is used to acquire code stream information
- the reconstruction module is used to reconstruct the attribute information of the point cloud by using the predicted value and the predicted residual obtained by decoding.
- the present invention solves the inconsistency of the point cloud attribute information caused by the discontinuity of the actual scene by establishing an adaptively updated point cloud attribute information prediction list, and selecting the best prediction mode from the list to predict the point cloud attribute information. Continuous problem, which significantly reduces the prediction residual of attribute information and the occurrence frequency of outliers and jump values, and improves the prediction accuracy and coding efficiency of attribute information;
- FIG. 2 is a schematic diagram of updating the prediction list by using the encoded points collected by the Laser to which the current point to be encoded belongs according to an embodiment of the present invention
- Fig. 5 is a schematic flowchart of a predictive decoding method for point cloud attribute information provided by an embodiment of the present invention
- Step 1 Get the original point cloud data.
- the acquired geometric position information of the original point cloud data is represented based on a Cartesian coordinate system
- the attribute information of the original point cloud data includes but not limited to reflectance information
- Step 2 Build an adaptive prediction list of point cloud attribute information.
- the attribute information of points with similar geometric distances in space usually has similarity, but due to the discontinuity of the scene, the attribute information of non-adjacent points in space may also have certain similarity.
- the measurement distance of the lidar and the reflectivity of the collection point so there is also a certain correlation between the depth information and the attribute information of the point cloud. Therefore, it is necessary to save the attribute information of the encoded point in the point cloud before the point to be encoded in the established prediction list through certain rules, then the best prediction mode can be selected from the prediction list through certain rules to predict the current to-be-encoded point. Attribute information of the code point.
- a prediction list with a certain size is established and initialized to fill it.
- a prediction list predList with a size of 4 can be established, and some prior values of attribute information can be filled in it to predictively encode the attribute information of the first point.
- step b) specifically includes:
- the search range is a certain range before the current point to be encoded, and its size can be set according to the actual situation.
- the first information may be depth information of a point or a spatial position of a point.
- the depth information of a point is the distance from the point to the lidar
- the spatial position is the three-dimensional space coordinates of the point.
- the second information may be the depth information of the point or the spatial position of the point, and when the first information is the depth information, the second information is the spatial position; when the first information is the spatial position, the second information is the depth information.
- the third information may be the azimuth information of the point, where the azimuth information may be the horizontal azimuth of the point or other information related to the azimuth, such as the number of the point scanned by the Laser.
- Steps a) and b) of this embodiment will be described in detail below by taking the size of the prediction list as 4 and taking the first information, the second information, and the third information as depth information, spatial position, and azimuth information respectively as an example.
- FIG. 2 is a schematic diagram of updating the prediction list by using the encoded points collected by the Laser to which the current to-be-encoded point belongs according to an embodiment of the present invention.
- ⁇ is the attribute information of the encoded point
- ⁇ is the attribute information of the encoded point
- ⁇ is the attribute information to be inserted into the prediction list
- the search range can include from the 7th point to the 2nd point.
- the encoded points between points whose size is 6.
- the prediction list is not filled, if there is an encoded point collected by a different Laser from the current point to be encoded, that is, when there is an encoded point in the points collected by other Lasers, then the current point to be encoded is correctly Select the corresponding point from the above points collected by Laser to update the prediction list.
- the specific update process is the same as the above step b).
- Step c) of this embodiment will be described in detail below through a specific example.
- FIG. 3 is a schematic diagram of updating the prediction list by using the encoded points collected by the Laser above the current to-be-encoded point provided by the embodiment of the present invention.
- ⁇ is the attribute information of the encoded point
- ⁇ is the attribute information of the encoded point
- ⁇ is the attribute information to be inserted into the prediction list
- the Laser to which the current point to be coded belongs to the jth Laser Determine the search range among the coded points collected by the j-1th Laser just above the current point to be coded. For example, if the current point to be coded is the 8th point collected by the jth Laser, the search range can include the jth point - 1 coded point between the 5th point and the 11th point collected by the Laser, its size is 7. Then, select the first two points closest to the depth information of the current point to be encoded from the search range.
- This embodiment solves the discontinuity of the point cloud attribute information caused by the discontinuity of the actual scene by establishing an adaptively updated point cloud attribute information prediction list, and selecting the best prediction mode from the list to predict the point cloud attribute information Therefore, it significantly reduces the prediction residual error of attribute information and the occurrence frequency of outliers and jump values, and improves the prediction accuracy and coding efficiency of attribute information.
- the selected prediction mode is encoded using the context model and existing entropy encoding techniques.
- the existing entropy coding technology can be used to code the prediction residual of the attribute information to obtain the code stream information.
- an entropy encoding context is designed for the prediction mode according to the established prediction list, which improves the effectiveness of the entropy encoding context model and further improves encoding efficiency.
- the present invention establishes an adaptively updated attribute information prediction list, selects the best prediction mode from the list to predict the attribute information of the point cloud, and further designs the entropy coding context of the prediction mode according to the prediction list to perform on-point cloud attribute information coding.
- This method fully considers the correlation between point cloud depth information and attribute information, and solves the problem of point cloud attribute information discontinuity caused by the discontinuity of the actual scene, thereby significantly reducing the prediction residual and deviation of attribute information.
- the occurrence frequency of value and jump value improves the prediction accuracy and coding efficiency of attribute information.
- Figure 4 is a structure of a predictive encoding device for point cloud attribute information provided by an embodiment of the present invention Schematic, which includes:
- the first data acquisition module 11 is used to acquire original point cloud data
- the first calculation module 12 is used to establish an adaptive prediction list of point cloud attribute information
- the first prediction module 13 is used to select a prediction mode from the adaptive prediction list and predict the attribute information of the point cloud to obtain a prediction residual;
- the encoding module 14 is configured to encode the prediction mode and the prediction residual to obtain code stream information.
- the device provided in this embodiment can implement the encoding method provided in Embodiment 1 above, and the detailed process will not be repeated here.
- Step 1 Get stream information.
- Step 2 Establish an adaptive prediction list of point cloud attribute information.
- the establishment of the adaptive prediction list of point cloud attribute information may refer to the method at the encoding end in the first embodiment above, and will not be described in detail here.
- Step 3 Predict the attribute information of the point cloud according to the adaptive prediction list and the decoded prediction mode, and obtain the predicted value.
- the encoder uses the adaptive prediction list of the point cloud attribute information to design the entropy coding context model, therefore, at the decoding end, it is also necessary to use the adaptive prediction list of the point cloud attribute information to design the corresponding The context model is entropy decoded, and thus the predicted mode is decoded.
- the encoding end adopts the conventional entropy coding method, the corresponding entropy decoding method can be directly adopted at the decoding end to obtain the prediction residual of point cloud attribute information.
- the predicted value obtained in step 3 is added to the predicted residual to obtain the attribute information of the reconstructed point cloud.
- the second data acquisition module 21 is used to acquire code stream information
- the second calculation module 22 is used to establish an adaptive prediction list of point cloud attribute information
- the reconstruction module 24 is used to reconstruct the attribute information of the point cloud by using the prediction value and the prediction residual obtained by decoding.
- the device provided in this embodiment can implement the decoding method provided in Embodiment 3 above, and the detailed process will not be repeated here.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Algebra (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
Description
Claims (11)
- 一种点云属性信息的预测编码方法,其特征在于,包括:获取原始点云数据;建立点云属性信息的自适应预测列表;从所述自适应预测列表中选择预测模式并对点云的属性信息进行预测,得到预测残差;对所述预测模式和所述预测残差进行编码,得到码流信息。
- 根据权利要求1所述的点云属性信息的预测编码方法,其特征在于,建立点云属性信息的自适应预测列表,包括:建立并初始化预测列表;按照一定规则从已编码点中选取若干点,并根据所选点的属性信息对所述预测列表进行更新,得到当前待编码点的属性信息自适应预测列表。
- 根据权利要求2所述的点云属性信息的预测编码方法,其特征在于,按照一定规则从已编码点中选取若干点,并根据所选点的属性信息对所述预测列表进行更新,包括:将当前待编码点的前一个已编码点的属性信息插入到所述预测列表的第一个位置;从当前待编码点所属Laser采集的已编码点中选择若干点,并将所选点的属性信息插入到所述预测列表中;当判断所述预测列表未被填满时,依次从其他Laser采集的已编码点中选择若干点,并将所选点的属性信息插入到所述预测列表中。
- 根据权利要求3所述的点云属性信息的预测编码方法,其特征在于,从当前待编码点所属Laser或其他Laser采集的已编码点中选择若干点,并将所选点的属性信息插入到所述预测列表中,包括:在Laser采集的已编码点中确定查找范围;根据点的第一信息在所述查找范围内选择m个点;若判断上述m个点中存在第一信息相同的点,则根据点的第二信息对上述m个点进行筛选,并将所选点的属性信息插入到所述预测列表中;否则,将上述m个点的属性信息插入到所述预测列表中。
- 根据权利要求4所述的点云属性信息的预测编码方法,其特征在于,根据点的第二信息对上述m个点进行筛选,并将所选点的属性信息插入到所述预测列表中,包括:在上述m个点中找出所有第一信息相同的n个点;将上述m个点中第一信息不同的m-n个点的属性信息插入到所述预测列表中;在上述n个点中,选出第二信息与当前待编码点最邻近的前t个点;若判断上述t个点中存在第二信息相同的点,则根据点的第三信息对上述t个点进行筛选,并将所选点的属性信息插入到所述预测列表中;否则,将上述t个点的属性信息插入到所述预测列表中。
- 根据权利要求5所述的点云属性信息的预测编码方法,其特征在于,根据点的第三信息对上述t个点进行筛选,并将所选点的属性信息插入到所述预测列表中,包括:在上述t个点中找出所有第二信息相同的k个点;将上述t个点中第二信息不同的t-k个点的属性信息插入到所述预测列表中;在上述k个点中,选出第三信息与当前待编码点最邻近的一个点,并将该点的属性信息插入到所述预测列表中。
- 根据权利要求6所述的点云属性信息的预测编码方法,其特征在于,所述第一信息为点的深度信息或者点的空间位置;所述第二信息为点的深度信息或者点的空间位置,且当所述第一信息为深度信息时,所述第二信息为空间位置;当所述第一信息为空间位置时,所述第二信息为深度信息;所述第三信息为点的方位角信息。
- 根据权利要求1所述的点云属性信息的预测编码方法,其特征在于,对所述预测模式和预测残差进行编码,得到码流信息,包括:根据所述自适应预测列表对所述预测模式设计上下文模型;利用该上下文模型对所述预测模式进行编码;对所述预测残差进行编码,得到码流信息。
- 一种点云属性信息的预测编码装置,其特征在于,包括:第一数据获取模块(11),用于获取原始点云数据;第一计算模块(12),用于建立点云属性信息的自适应预测列表;第一预测模块(13),用于从所述自适应预测列表中选择预测模式并对点云的属性信息进行预测,得到预测残差;编码模块(14),用于对所述预测模式和所述预测残差进行编码,得到码流信息。
- 一种点云属性信息的预测解码方法,其特征在于,包括:获取码流信息;建立点云属性信息的自适应预测列表;根据所述自适应预测列表和解码得到的预测模式对点云的属性信息进行预测,得到预测值;利用所述预测值及解码得到的预测残差重建点云的属性信息。
- 一种点云属性信息的预测解码装置,其特征在于,包括:第二数据获取模块(21),用于获取码流信息;第二计算模块(22),用于建立点云属性信息的自适应预测列表;第二预测模块(23),用于根据所述自适应预测列表和解码得到的预测模式对点云的属性信息进行预测,得到预测值;重建模块(24),用于利用所述预测值及解码得到的预测残差重建点云的属性信息。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22810432.9A EP4240018A4 (en) | 2021-05-26 | 2022-05-18 | METHOD AND APPARATUS FOR PREDICTION ENCODING AND DECODING FOR POINT CLOUD ATTRIBUTE INFORMATION |
| US18/265,874 US12406400B2 (en) | 2021-05-26 | 2022-05-18 | Method and apparatus for predictively coding and decoding attribute information of point cloud |
| US19/285,134 US20250356534A1 (en) | 2021-05-26 | 2025-07-30 | Method and apparatus for predictively coding and decoding attribute information of point cloud |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110580205.1A CN115412715B (zh) | 2021-05-26 | 2021-05-26 | 一种点云属性信息的预测编解码方法及装置 |
| CN202110580205.1 | 2021-05-26 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18/265,874 A-371-Of-International US12406400B2 (en) | 2021-05-26 | 2022-05-18 | Method and apparatus for predictively coding and decoding attribute information of point cloud |
| US19/285,134 Continuation US20250356534A1 (en) | 2021-05-26 | 2025-07-30 | Method and apparatus for predictively coding and decoding attribute information of point cloud |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022247705A1 true WO2022247705A1 (zh) | 2022-12-01 |
Family
ID=84155491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2022/093617 Ceased WO2022247705A1 (zh) | 2021-05-26 | 2022-05-18 | 一种点云属性信息的预测编解码方法及装置 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US12406400B2 (zh) |
| EP (1) | EP4240018A4 (zh) |
| CN (1) | CN115412715B (zh) |
| WO (1) | WO2022247705A1 (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118338019A (zh) * | 2023-01-11 | 2024-07-12 | 维沃移动通信有限公司 | 点云编码方法、点云解码方法、装置及通信设备 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118828023A (zh) * | 2023-04-19 | 2024-10-22 | 维沃移动通信有限公司 | 点云编码处理方法、点云解码处理方法及相关设备 |
| CN119316597B (zh) * | 2023-07-12 | 2025-10-17 | 维沃移动通信有限公司 | 属性编码方法、属性解码方法及电子设备 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110708560A (zh) * | 2018-07-10 | 2020-01-17 | 腾讯美国有限责任公司 | 点云数据处理方法和装置 |
| CN112385222A (zh) * | 2019-06-12 | 2021-02-19 | 浙江大学 | 点云处理的方法与装置 |
| CN112385238A (zh) * | 2019-07-10 | 2021-02-19 | 深圳市大疆创新科技有限公司 | 一种数据编码、数据解码方法、设备及存储介质 |
| WO2021045603A1 (ko) * | 2019-09-06 | 2021-03-11 | 엘지전자 주식회사 | 포인트 클라우드 데이터 송신 장치, 포인트 클라우드 데이터 송신 방법, 포인트 클라우드 데이터 수신 장치 및 포인트 클라우드 데이터 수신 방법 |
| WO2021049758A1 (ko) * | 2019-09-11 | 2021-03-18 | 엘지전자 주식회사 | 포인트 클라우드 데이터 송신 장치, 포인트 클라우드 데이터 송신 방법, 포인트 클라우드 데이터 수신 장치 및 포인트 클라우드 데이터 수신 방법 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108322742B (zh) * | 2018-02-11 | 2019-08-16 | 北京大学深圳研究生院 | 一种基于帧内预测的点云属性压缩方法 |
| US11010931B2 (en) | 2018-10-02 | 2021-05-18 | Tencent America LLC | Method and apparatus for video coding |
| CN109257604B (zh) * | 2018-11-20 | 2020-11-27 | 山东大学 | 一种基于tmc3点云编码器的颜色属性编码方法 |
| CN112449754B (zh) * | 2019-07-04 | 2024-03-08 | 深圳市大疆创新科技有限公司 | 一种数据编码、数据解码方法、设备及存储介质 |
| CN111405281A (zh) * | 2020-03-30 | 2020-07-10 | 北京大学深圳研究生院 | 一种点云属性信息的编码方法、解码方法、存储介质及终端设备 |
| CN112565734B (zh) * | 2020-12-03 | 2022-04-19 | 西安电子科技大学 | 基于混合编码的点云属性编解码方法及装置 |
| CN112565757B (zh) * | 2020-12-03 | 2022-05-13 | 西安电子科技大学 | 基于通道差异化的点云属性编码及解码方法、装置及系统 |
-
2021
- 2021-05-26 CN CN202110580205.1A patent/CN115412715B/zh active Active
-
2022
- 2022-05-18 WO PCT/CN2022/093617 patent/WO2022247705A1/zh not_active Ceased
- 2022-05-18 EP EP22810432.9A patent/EP4240018A4/en active Pending
- 2022-05-18 US US18/265,874 patent/US12406400B2/en active Active
-
2025
- 2025-07-30 US US19/285,134 patent/US20250356534A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110708560A (zh) * | 2018-07-10 | 2020-01-17 | 腾讯美国有限责任公司 | 点云数据处理方法和装置 |
| CN112385222A (zh) * | 2019-06-12 | 2021-02-19 | 浙江大学 | 点云处理的方法与装置 |
| CN112385238A (zh) * | 2019-07-10 | 2021-02-19 | 深圳市大疆创新科技有限公司 | 一种数据编码、数据解码方法、设备及存储介质 |
| WO2021045603A1 (ko) * | 2019-09-06 | 2021-03-11 | 엘지전자 주식회사 | 포인트 클라우드 데이터 송신 장치, 포인트 클라우드 데이터 송신 방법, 포인트 클라우드 데이터 수신 장치 및 포인트 클라우드 데이터 수신 방법 |
| WO2021049758A1 (ko) * | 2019-09-11 | 2021-03-18 | 엘지전자 주식회사 | 포인트 클라우드 데이터 송신 장치, 포인트 클라우드 데이터 송신 방법, 포인트 클라우드 데이터 수신 장치 및 포인트 클라우드 데이터 수신 방법 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4240018A4 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118338019A (zh) * | 2023-01-11 | 2024-07-12 | 维沃移动通信有限公司 | 点云编码方法、点云解码方法、装置及通信设备 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4240018A1 (en) | 2023-09-06 |
| EP4240018A4 (en) | 2024-03-27 |
| CN115412715B (zh) | 2024-03-26 |
| US12406400B2 (en) | 2025-09-02 |
| US20250356534A1 (en) | 2025-11-20 |
| US20240037796A1 (en) | 2024-02-01 |
| CN115412715A (zh) | 2022-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11252441B2 (en) | Hierarchical point cloud compression | |
| US10853973B2 (en) | Point cloud compression using fixed-point numbers | |
| WO2022247705A1 (zh) | 一种点云属性信息的预测编解码方法及装置 | |
| CN109257604A (zh) | 一种基于tmc3点云编码器的颜色属性编码方法 | |
| KR20230060534A (ko) | 2차원 정규화 평면 투사에 기초한 포인트 클라우드 인코딩 및 디코딩 방법과 장치 | |
| WO2022166961A1 (zh) | 面向大规模点云的二维规则化平面投影及编解码方法 | |
| JP7785990B2 (ja) | 二次元正則化平面投影に基づく点群符号化および復号方法ならびにデバイス | |
| WO2022247716A1 (zh) | 一种点云方位角信息的预测编解码方法及装置 | |
| US20260113484A1 (en) | Point cloud encoding and decoding method and device based on two-dimensional regularization plane projection | |
| CN113518226A (zh) | 一种基于地面分割的g-pcc点云编码改进方法 | |
| CN118334241A (zh) | 针对倾斜摄影场景的三维重建与实时渲染方法 | |
| US20260067500A1 (en) | Method and apparatus for predictively coding and decoding depth information of point cloud | |
| US20240013444A1 (en) | Point cloud encoding/decoding method and apparatus based on two-dimensional regularized plane projection | |
| CN117581549A (zh) | 帧内预测、编解码方法及装置、编解码器、设备、介质 | |
| WO2022166966A1 (zh) | 基于二维规则化平面投影的点云编解码方法及装置 | |
| US20260039839A1 (en) | Encoding/decoding method and storage medium | |
| US20260113436A1 (en) | Coding method, decoding method, bit stream, coder, decoder, and storage medium | |
| CN120431290A (zh) | 一种基于点集优化算法和变分量化自编码器的区域划分策略的三维重建方法 | |
| WO2024234159A1 (zh) | 点云编解码方法、解码器、编码器及计算机可读存储介质 | |
| WO2025010601A9 (zh) | 编解码方法、编码器、解码器、码流以及存储介质 | |
| HK40067089B (zh) | 点云数据编码方法、解码方法、装置、设备及存储介质 | |
| HK40067089A (zh) | 点云数据编码方法、解码方法、装置、设备及存储介质 | |
| WO2025015523A1 (zh) | 编解码方法、码流、编码器、解码器以及存储介质 | |
| CN120510234A (zh) | 一种基于深度学习的体素化点云语义通信方法及系统 | |
| CN121569479A (zh) | 用于使用帧间预测编解码点云的重构点来进行数据编解码的方法和装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22810432 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2022810432 Country of ref document: EP Effective date: 20230530 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 18265874 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWG | Wipo information: grant in national office |
Ref document number: 18265874 Country of ref document: US |