公开(公告)号：US20150063446A1

公开(公告)日：2015-03-05

申请号：US14533151

申请日：2014-11-05

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU ,  Kengo TERADA

IPC: H04N19/18 ,  H04N19/129 ,  H04N19/105

CPC classification number: H04N19/18 ,  H04N19/105 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/463 ,  H04N19/61

Abstract: A moving picture encoding method for increasing coding efficiency includes: determining whether or not to apply orthogonal transformation, to calculate a value of an orthogonal transform skip flag; performing the orthogonal transformation on a prediction residual according to the value of the orthogonal transform skip flag, to calculate at least one orthogonal transform coefficient; performing quantization on at least the one orthogonal transform coefficient, to calculate at least one quantized coefficient; performing variable-length encoding on the orthogonal transform skip flag; and changing a scan order for at least the one quantized coefficient according to the value of the orthogonal transform skip flag, and performing variable-length encoding on at least the one quantized coefficient in the scan order after the change.

Abstract translation: 一种用于提高编码效率的运动图像编码方法包括：确定是否应用正交变换，以计算正交变换跳过标志的值; 根据正交变换跳过标志的值对预测残差执行正交变换，以计算至少一个正交变换系数; 至少对一个正交变换系数进行量化，计算至少一个量化系数; 对正交变换跳过标志执行可变长度编码; 以及根据所述正交变换跳过标志的值改变至少所述一个量化系数的扫描顺序，以及在所述改变之后对所述扫描顺序中的至少一个量化系数进行可变长度编码。

公开(公告)号：US20140348230A1

公开(公告)日：2014-11-27

申请号：US14456152

申请日：2014-08-11

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU

IPC: H04N19/91 ,  H04N19/124 ,  H04N19/60

CPC classification number: H04N19/50 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/196 ,  H04N19/436 ,  H04N19/61 ,  H04N19/70 ,  H04N19/85 ,  H04N19/91

Abstract: A moving picture coding method includes (i) transforming, for each of one or more second processing units included in the first processing unit, a moving picture signal in a spatial domain into a frequency domain coefficient and quantizing the frequency domain coefficient, and (ii) performing arithmetic coding on a luminance CBF flag indicating whether or not a quantized coefficient is included in the second processing unit in which transform and quantization are performed, wherein, in the arithmetic coding, a probability table for use in arithmetic coding is determined according to whether or not the size of the first processing unit is identical to the size of the second processing unit and whether or not the second processing unit has a predetermined maximum size.

公开(公告)号：US20140341301A1

公开(公告)日：2014-11-20

申请号：US14451492

申请日：2014-08-05

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Chong Soon LIM ,  Viktor WAHADANIAH ,  Sue Mon Thet NAING ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Hisao SASAI ,  Toshiyasu SUGIO

IPC: H04N19/44

CPC classification number: H04N19/184 ,  G06T9/00 ,  G06T9/004 ,  G11B20/10 ,  G11B20/10527 ,  H04N19/103 ,  H04N19/152 ,  H04N19/159 ,  H04N19/176 ,  H04N19/40 ,  H04N19/426 ,  H04N19/44 ,  H04N19/46 ,  H04N19/593 ,  H04N19/70 ,  H04N19/85

Abstract: The image coding method is used to code images to generate a coded stream. The image coding method includes: writing, into a sequence parameter set in the coded stream to be generated, a first parameter representing a first bit-depth that is a bit-depth of a reconstructed sample in the images; and writing, into the sequence parameter set, a second parameter which is different from the first parameter and represents a second bit-depth that is a bit-depth of an Intra Pulse Code Modulation (IPCM) sample in the images.

公开(公告)号：US20140341298A1

公开(公告)日：2014-11-20

申请号：US14453917

申请日：2014-08-07

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Viktor WAHADANIAH ,  Chong Soon LIM ,  Sue Mon Thet NAING ,  Hai Wei SUN ,  Toshiyasu SUGIO ,  Takahiro NISHI ,  Hisao SASAI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Toru MATSUNOBU ,  Kengo TERADA

IPC: H04N19/51 ,  H04N19/583

CPC classification number: H04N19/51 ,  H04N19/176 ,  H04N19/513 ,  H04N19/52

Abstract: An image coding method includes: deriving a candidate for a motion vector predictor from a neighboring motion vector; adding the candidate to a list; selecting a motion vector predictor from the list; coding a current block; and coding a current motion vector. In the deriving, the candidate is derived according to a first derivation scheme when each of a current reference picture and a neighboring reference picture is determined to be a long-term reference picture, and the candidate is derived according to a second derivation scheme when each of a current reference picture and a neighboring reference picture is determined to be a short-term reference picture.

公开(公告)号：US20140334544A1

公开(公告)日：2014-11-13

申请号：US14446459

申请日：2014-07-30

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Virginie DRUGEON ,  Youji SHIBAHARA ,  Takahiro NISHI ,  Hisao SASAI ,  Kyoko TANIKAWA

IPC: H04N19/593 ,  H04N19/44 ,  H04N19/136

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/136 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/42 ,  H04N19/44

Abstract: A spatial prediction method capable of reducing the complexity of spatial prediction includes: detecting an edge (E) overlapping the current block by obtaining a horizontal gradient (Gy) and a vertical gradient (Gx) between pixels within a block adjacent to the current block; calculating an integer slope of the edge; determining, for each pixel position within the current block, a sub-pel position being an intersection between (i) a line that has the integer slope and passes through the pixel position and (ii) a boundary of the adjacent block; and predicting, for each pixel position, a pixel value at the pixel position based on a pixel value interpolated in the sub-pel position, wherein the boundary of the adjacent block is a row or a column that is the closest to the current block, among rows or columns of pixels included in the adjacent block.

Abstract translation: 能够降低空间预测的复杂度的空间预测方法包括：通过获得与当前块相邻的块内的像素之间的水平梯度（Gy）和垂直梯度（Gx）来检测与当前块重叠的边缘（E） 计算边缘的整数斜率; 确定对于当前块中的每个像素位置，子像素位置是（i）具有整数斜率并通过像素位置的线和（ii）相邻块的边界之间的交点; 并且对于每个像素位置，基于在子像素位置内插的像素值来预测像素位置处的像素值，其中相邻块的边界是最接近当前块的行或列， 包括在相邻块中的像素列或像素列中。

公开(公告)号：US20250106440A1

公开(公告)日：2025-03-27

申请号：US18972329

申请日：2024-12-06

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Chong Soon LIM ,  Hai Wei SUN ,  Han Boon TEO ,  Jing Ya LI ,  Che-Wei KUO ,  Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE ,  Yusuke KATO

IPC: H04N19/82 ,  H04N19/119 ,  H04N19/176 ,  H04N19/593

Abstract: An encoder includes circuitry and memory coupled to the circuitry. The circuitry determines whether to split a current luma virtual pipeline decoding unit (VPDU) into smaller blocks. When it is determined not to split the current luma VPDU into smaller blocks, the circuitry predicts a block of chroma samples without using luma samples. When it is determined to split the luma VPDU into smaller blocks, the circuitry predicts the block of chroma samples using luma samples. The circuitry encodes the block using the predicted chroma samples.

公开(公告)号：US20250106424A1

公开(公告)日：2025-03-27

申请号：US18974444

申请日：2024-12-09

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Chong Soon LIM ,  Hai Wei SUN ,  Sughosh Pavan SHASHIDHAR ,  Ru Ling LIAO ,  Han Boon TEO ,  Takahiro NISHI ,  Ryuichi KANOH ,  Tadamasa TOMA

IPC: H04N19/44 ,  H04N19/119 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176

Abstract: An image encoder writes a first parameter and a second parameter to a bitstream, and derives a partition mode based on the first and second parameters. Responsive to the derived partition mode being a first partition mode, the image encoder executes the first partition mode including: splitting a block of a picture into a plurality of first blocks including a N×2N block sized N pixels by 2N pixels; splitting the N×2N block, wherein a ternary split is allowed to split the N×2N block in a vertical direction, which is a direction along the 2N pixels, into a plurality of sub blocks including at least one sub block sized N/4×2N, while a binary split is not allowed to split the N×2N block in the vertical direction into two sub blocks that are equally sized N/2×2N; and encoding the plurality of sub blocks.

公开(公告)号：US20250097456A1

公开(公告)日：2025-03-20

申请号：US18964093

申请日：2024-11-29

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Tadamasa TOMA ,  Takahiro NISHI ,  Kiyofumi ABE ,  Yusuke KATO

IPC: H04N19/513 ,  H04N19/86

Abstract: An encoder includes circuitry and memory coupled to the circuitry. In operation, the circuitry: derives a motion vector of a current block by referring to at least one reference picture different from a picture to which the current block belongs; performs a mode for estimating, for each sub-block unit of sub-blocks obtained by splitting the current block, a surrounding region of the motion vector to correct the motion vector; determines whether to apply deblocking filtering to each of boundaries between neighboring ones of the sub-blocks; and applies the deblocking filtering to the boundary, based on a result of the determination.

公开(公告)号：US20250095214A1

公开(公告)日：2025-03-20

申请号：US18965181

申请日：2024-12-02

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Toshiyasu SUGIO ,  Noritaka IGUCHI ,  Takahiro NISHI ,  Chong Soon LIM ,  Zheng WU ,  Han Boon TEO ,  Keng Liang LOI ,  Chung Dean HAN ,  Georges NADER ,  Farman DUMANOV

IPC: G06T9/00

Abstract: An encoding device includes: memory; and a circuit. In operation, the circuit: when a first triangle satisfies a condition, performs a first process including a process of using the first triangle to derive a predicted value of a current vertex to be encoded of a second triangle; when the first triangle does not satisfy the condition, performs a second process including a process of using a third triangle different from the first triangle and the second triangle to derive the predicted value of the current vertex; and encodes the current vertex using the predicted value.

公开(公告)号：US20250071275A1

公开(公告)日：2025-02-27

申请号：US18947538

申请日：2024-11-14

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Sughosh Pavan SHASHIDHAR ,  Hai Wei SUN ,  Chong Soon LIM ,  Ru Ling LIAO ,  Han Boon TEO ,  Jing Ya LI ,  Takahiro NISHI ,  Kiyofumi ABE ,  Ryuichi KANOH ,  Tadamasa TOMA

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/184 ,  H04N19/60

Abstract: An encoder includes circuitry and a memory coupled to the circuitry. The circuitry, in operation, determines whether or not a ternary split process of splitting a block into three sub blocks in a first direction parallel to a first longer side of the block is allowed by comparing a size of a second shorter side of the block to a minimum threshold value. The circuitry, responsive to the ternary split process being allowed, writes, into a bitstream, a split direction parameter indicative of a splitting direction. The circuitry, in operation, splits the block into a plurality of sub blocks in a direction indicated by the split direction parameter; and encodes the plurality of sub blocks. The minimum threshold value corresponds to a minimum size supported in a transform process.