Patents by Inventor Ru-Ling Liao
Ru-Ling Liao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 12034940Abstract: An encoder, includes: circuitry; and memory. Using the memory, the circuitry: in inter prediction for a current block, determines a base motion vector, and writes, in an encoded signal, a delta motion vector representing (i) one direction among a plurality of directions including a diagonal direction and (ii) a distance from the base motion vector; and encodes the current block using the delta motion vector and the base motion vector as a motion vector of the current block.Type: GrantFiled: December 1, 2021Date of Patent: July 9, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICAInventors: Kiyofumi Abe, Takahiro Nishi, Tadamasa Toma, Ryuichi Kanoh, Chong Soon Lim, Ru Ling Liao, Hai Wei Sun, Sughosh Pavan Shashidhar, Han Boon Teo, Jing Ya Li
-
Publication number: 20240223776Abstract: Methods and systems implement fusion of intra TMP mode with other intra prediction modes that utilize adjacent samples, to improve prediction accuracy. A VVC-standard encoder and a VVC-standard decoder can configure one or more processors of a computing system to fuse intra TMP mode with different prediction modes, such as spatial geometric partitioning mode (“SGPM”) and combined inter and intra prediction (“CIIP”); to refine an intra TMP prediction block based on adjacent samples, such as using the method of position-dependent intra prediction combination (“PDPC”); to apply local illumination compensation (“LIC”) to refine an intra TMP prediction block; and/or to implement sub-pixel positions, including multiple, different sub-pixel positions, sub-pixel positions in combination with multi-candidate intra TMP, or flip modes in intra TMP to further improve prediction accuracy.Type: ApplicationFiled: December 28, 2023Publication date: July 4, 2024Inventors: Xinwei Li, Ru-Ling Liao, Jie Chen, Yan Ye
-
Patent number: 12022063Abstract: An image encoder includes: circuitry; and a memory coupled to the circuitry. The circuitry, in operation: calculates first values of a current block using intra prediction, the intra prediction being limited to planar mode, the planar mode using multiple reference pixels for each pixel location of the current block; calculates second values of the current block using inter prediction; calculates third values of the current block by weighting the first values and the second values; and encodes the current block using the third values, and in the calculating of the third values, a first weight is applied to the first values and a second weight is applied to the second values, the second weight being different from the first weight.Type: GrantFiled: May 27, 2021Date of Patent: June 25, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICAInventors: Ru Ling Liao, Chong Soon Lim, Jing Ya Li, Han Boon Teo, Hai Wei Sun, Che Wei Kuo, Yusuke Kato, Tadamasa Toma, Kiyofumi Abe, Takahiro Nishi
-
Publication number: 20240205447Abstract: A method for performing motion compensation includes: receiving a first wrap-around motion compensation flag associated with one or more pictures, and a second wrap-around motion compensation flag associated with a sequence of pictures; and determining whether the first wrap-around motion compensation flag is equal to a first value or a second value based on the second wrap-around motion compensation flag or a luma coding tree block size: when the second wrap-around motion compensation flag is equal to the second value, determining the first wrap-around motion compensation flag equal to the second value, or when the luma coding tree block size in unit of minimum coding block plus 1 is greater than a picture width in unit of minimum coding block minus 1, determining the first wrap-around motion compensation flag is equal to the second value.Type: ApplicationFiled: February 28, 2024Publication date: June 20, 2024Inventors: Jie CHEN, Yan YE, Ru-Ling LIAO, Jiancong LUO
-
Publication number: 20240205420Abstract: An encoder encodes a video, and includes: circuitry; and memory coupled to the circuitry. Using the memory, the circuitry: obtains at least two items of prediction information for a first partition included in the video; derives at least one template from neighboring samples which neighbor the first partition; calculates at least two costs, using the at least one template and the at least two items of prediction information; using the at least two costs, (i) determines at least one splitting direction for the first partition or (ii) assigns one of the at least two items of prediction information to a second partition split from the first partition according to the splitting direction, and another thereof to a third partition split from the first partition according to the splitting direction; and encodes the first partition according to the splitting direction and the at least two items of prediction information.Type: ApplicationFiled: February 29, 2024Publication date: June 20, 2024Inventors: Kiyofumi ABE, Takahiro NISHI, Tadamasa TOMA, Ryuichi KANOH, Chong Soon LIM, Ru Ling LIAO, Hai Wei SUN, Sughosh Pavan SHASHIDHAR, Han Boon TEO, Jing Ya LI
-
Patent number: 12015788Abstract: The present disclosure provides systems and methods for signaling and using a palette mode in video processing. According to certain disclosed embodiments, an exemplary video processing method includes: receiving a first palette entry for palette coding a target coding unit (CU); determining whether the target CU is part of a single-tree slice; determining whether the target CU is coded with separate luma and chroma trees; and in response to the target CU being determined to be part of a single-tree slice and be coded with separate luma and chroma trees, decoding a first component of the target CU based on the first palette entry, and decoding a second component of the target CU based on a default palette entry.Type: GrantFiled: September 16, 2022Date of Patent: June 18, 2024Assignee: Alibaba Group Holding LimitedInventors: Mohammed Golam Sarwer, Ru-Ling Liao, Yan Ye, Jiancong Luo, Jie Chen
-
Publication number: 20240196005Abstract: An encoder, when sub-block encoding is to be performed, determines a plurality of sub-blocks in a first image block, the plurality of sub-blocks including a first sub-block, determines a first motion vector for the first sub-block by referring to a first candidate list, performs first inter prediction processing on the first sub-block using the first motion vector, and encodes the first image block using a result of the first inter prediction processing. When partition encoding is to be performed, the encoder, in operation, determines a plurality of partitions in a second image block, the plurality of partitions including a first partition, determines a second motion vector for the first partition by referring to a second candidate list, performs second inter prediction processing on the first partition using the second motion vector, and encodes the second image block using a result of the second inter prediction processing.Type: ApplicationFiled: February 23, 2024Publication date: June 13, 2024Inventors: Kiyofumi ABE, Takahiro NISHI, Tadamasa TOMA, Ryuichi KANOH, Chong Soon LIM, Ru Ling LIAO, Hai Wei SUN, Sughosh Pavan SHASHIDHAR, Han Boon TEO, Jing Ya LI
-
Publication number: 20240187570Abstract: A video processing method includes: determining whether an inter predictor correction is enabled for a coding block; and when the inter predictor correction is enabled for the coding block, performing the inter predictor correction by: obtaining a plurality of predicted samples from a top boundary and a left boundary of a predicted block corresponding to the coding block; obtaining a plurality of reconstructed samples from top neighboring reconstructed samples and left neighboring reconstructed samples of the coding block; and deriving a corrected predicted block based on the plurality of the predicted samples, the plurality of the reconstructed samples and the predicted block.Type: ApplicationFiled: February 14, 2024Publication date: June 6, 2024Inventors: Xinwei LI, Jie CHEN, Ru-Ling LIAO, Yan YE
-
Patent number: 12003738Abstract: The present disclosure provides methods and apparatuses for signaling subpicture partitioning information. An exemplary method includes: determining, according to a subpicture information present flag signaled in a bitstream, whether the bitstream comprises subpicture information; and in response to the bitstream comprising the subpicture information, signaling in the bitstream at least one of: a number of subpictures in a picture, a width, a height, a position, and an identifier (ID) mapping of a target subpicture, a subpic_treated_as_pic_flag, and a loop_filter_across_subpic_enabled_flag.Type: GrantFiled: October 24, 2022Date of Patent: June 4, 2024Assignee: Alibaba Group Holding LimitedInventors: Jie Chen, Yan Ye, Jiancong Luo, Ru-Ling Liao
-
Publication number: 20240179341Abstract: An encoder which includes circuitry and memory. Using the memory, the circuitry generates a list which includes candidates for a first motion vector for a first partition. The list has a maximum list size and an order of the candidates, and at least one of the maximum list size or the order of the candidates is dependent on at least one of a partition size or a partition shape of the first partition. The circuitry selects the first motion vector from the candidates included in the list; encodes an index indicating the first motion vector among the candidates in the list into the bitstream based on the maximum list size; and generates the predicted image for the first partition using the first motion vector.Type: ApplicationFiled: February 6, 2024Publication date: May 30, 2024Inventors: Chong Soon LIM, Hai Wei Sun, Sughosh Pavan Shashidhar, Han Boon Teo, Ru Ling Liao, Jing Ya Li, Tadamasa Toma, Takahiro Nishi, Kiyofumi Abe, Ryuichi Kanoh
-
Patent number: 11997271Abstract: An encoder partitions into blocks using a set of block partition modes. The set of block partition modes includes a first partition mode for partitioning a first block, and a second block partition mode for partitioning a second block which is one of blocks obtained after the first block is partitioned. When the number of partitions of the first block partition mode is three, the second block is a center block among the blocks obtained after partitioning the first block, and the partition direction of the second block partition mode is same as the partition direction of the first block partition mode, the second block partition mode indicates that the number of partitions is only three. A parameter for identifying the second block partition mode includes a first flag indicating a horizontal or vertical partition direction, and does not include a second flag indicating the number of partitions.Type: GrantFiled: November 15, 2022Date of Patent: May 28, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICAInventors: Tadamasa Toma, Takahiro Nishi, Kiyofumi Abe, Ryuichi Kanoh, Chong Soon Lim, Sughosh Pavan Shashidhar, Ru Ling Liao, Hai Wei Sun, Han Boon Teo, Jing Ya Li
-
Publication number: 20240163431Abstract: Provided is an encoder which includes circuitry and memory. Using the memory, the circuitry splits an image block into a plurality of partitions, obtains a prediction image for a partition, and encodes the image block using the prediction image. When the partition is not a non-rectangular partition, the circuitry obtains (i) a first prediction image for the partition, (ii) a gradient image for the first prediction image, and (iii) a second prediction image as the prediction image using the first prediction image and the gradient image. When the partition is a non-rectangular partition, the circuitry obtains the first prediction image as the prediction image without using the gradient image.Type: ApplicationFiled: January 19, 2024Publication date: May 16, 2024Inventors: Kiyofumi ABE, Takahiro NISHI, Tadamasa TOMA, Ryuichi KANOH, Chong Soon LIM, Ru Ling LIAO, Hai Wei SUN, Sughosh Pavan SHASHIDHAR, Han Boon TEO, Jing Ya LI
-
Patent number: 11985349Abstract: An encoder capable of properly handling an image to be encoded or decoded includes processing circuitry and memory connected to the processing circuitry. Using the memory, the processing circuitry: obtains parameters including at least one of (i) one or more parameters related to a first process for correcting distortion in an image captured with a wide angle lens and (ii) one or more parameters related to a second process for stitching a plurality of images; generates an encoded image by encoding a current image to be processed that is based on the image or the plurality of images; and writes the parameters into a bitstream including the encoded image.Type: GrantFiled: July 12, 2021Date of Patent: May 14, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICAInventors: Chong Soon Lim, Han Boon Teo, Takahiro Nishi, Tadamasa Toma, Ru Ling Liao, Sughosh Pavan Shashidhar, Hai Wei Sun
-
Patent number: 11985350Abstract: An encoder capable of properly handling an image to be encoded or decoded includes processing circuitry and memory connected to the processing circuitry. Using the memory, the processing circuitry: obtains parameters including at least one of (i) one or more parameters related to a first process for correcting distortion in an image captured with a wide angle lens and (ii) one or more parameters related to a second process for stitching a plurality of images; generates an encoded image by encoding a current image to be processed that is based on the image or the plurality of images; and writes the parameters into a bitstream including the encoded image.Type: GrantFiled: July 12, 2021Date of Patent: May 14, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICAInventors: Chong Soon Lim, Han Boon Teo, Takahiro Nishi, Tadamasa Toma, Ru Ling Liao, Sughosh Pavan Shashidhar, Hai Wei Sun
-
Publication number: 20240155158Abstract: Embodiments of the present disclosure provides systems and methods for processing video content. The methods include: reconstructing a chroma block based on a plurality of luma samples associated with the chroma block, wherein reconstructing the chroma block includes: determining whether the chroma block has non-zero chroma residuals; and in response to a determination that the chroma block has no non-zero chroma residuals, bypassing a process of averaging the plurality of luma samples, wherein the process of averaging is used for reconstructing the chroma block.Type: ApplicationFiled: December 29, 2023Publication date: May 9, 2024Inventors: Yan YE, Jie CHEN, Ru-Ling LIAO
-
Publication number: 20240146932Abstract: A video decoding method using a subblock temporal motion prediction for regular inter mode (sbAmvp mode). The method includes: receiving a bitstream comprising one or more syntax elements signaling coding unit (CU) level motion information associated with a CU, wherein the CU is encoded using regular inter mode; dividing the CU into a plurality of subblocks; and performing the sbAmvp mode on the plurality of subblocks.Type: ApplicationFiled: October 16, 2023Publication date: May 2, 2024Inventors: Ru-ling LIAO, Jie CHEN, Yan YE, Xinwei LI
-
Patent number: 11968360Abstract: The present disclosure provides a computer-implemented method for encoding video. The method includes: receiving a video frame for processing; generating one or more coding units of the video frame; and processing one or more coding units using one or more palette predictors having palette entries, wherein each palette entry of the one or more palette predictors has a corresponding reuse flag, and wherein a number of reuse flags for each palette predictor is set to a fixed number for a corresponding coding unit.Type: GrantFiled: March 31, 2021Date of Patent: April 23, 2024Assignee: Alibaba Group Holding LimitedInventors: Ru-Ling Liao, Mohammed Golam Sarwer, Yan Ye, Xuan Huang
-
Publication number: 20240129523Abstract: An encoder includes circuitry and memory. Using the memory, the circuitry, in operation, selects an encoding mode from among candidates including a decoder-side motion vector refinement (DMVR) encoding mode and a partition encoding mode. When the DMVR encoding mode is selected, the circuitry: obtains a first motion vector for a first image block; derives a second motion vector from the first motion vector using motion search; and generates a prediction image for the first image block using the second motion vector. When the partition encoding mode is selected, the circuitry: determines a plurality of partitions in a second image block; obtains a third motion vector for each partition; and generates a prediction image for the second image block using the third motion vector, without deriving a fourth motion vector from the third motion vector using motion search.Type: ApplicationFiled: December 19, 2023Publication date: April 18, 2024Inventors: Kiyofumi ABE, Takahiro NISHI, Tadamasa TOMA, Ryuichi KANOH, Chong Soon LIM, Ru Ling LIAO, Hai Wei SUN, Sughosh Pavan SHASHIDHAR, Han Boon TEO, Jing Ya LI
-
Patent number: 11962804Abstract: An encoder capable of properly handling an image to be encoded or decoded includes processing circuitry and memory connected to the processing circuitry. Using the memory, the processing circuitry: obtains parameters including at least one of (i) one or more parameters related to a first process for correcting distortion in an image captured with a wide angle lens and (ii) one or more parameters related to a second process for stitching a plurality of images; generates an encoded image by encoding a current image to be processed that is based on the image or the plurality of images; and writes the parameters into a bitstream including the encoded image.Type: GrantFiled: July 12, 2021Date of Patent: April 16, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICAInventors: Chong Soon Lim, Han Boon Teo, Takahiro Nishi, Tadamasa Toma, Ru Ling Liao, Sughosh Pavan Shashidhar, Hai Wei Sun
-
Publication number: 20240121384Abstract: An encoder includes circuitry and memory connected to the circuitry. The circuitry: derives an absolute value of a sum of horizontal gradient values; derives, as a first parameter, the total sum of the absolute values of horizontal gradient values; derives, as a second parameter, the total sum of the absolute values of vertical gradient values; derives a horizontal-related pixel difference value; derives, as a third parameter, the total sum of the absolute values of horizontal-related pixel difference values; derives a vertical-related pixel difference value; derives, as a fourth parameter, the total sum of the absolute values of vertical-related pixel difference values; and generates a prediction image using the first to fourth parameters.Type: ApplicationFiled: December 14, 2023Publication date: April 11, 2024Inventors: Jing Ya LI, Ru Ling Liao, Chong Soon Lim, Han Boon Teo, Hai Wei Sun, Che Wei Kuo, Kiyofumi Abe, Takahiro Nishi, Tadamasa Toma