公开(公告)号：US20210218970A1

公开(公告)日：2021-07-15

申请号：US17196194

申请日：2021-03-09

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/159 ,  H04N19/182 ,  H04N19/117

Abstract: An encoder includes circuitry and memory connected to the circuitry. The circuitry: derives an absolute value of a sum of gradient values in first and second ranges; derives, as a first parameter, a total sum of absolute values of sums of gradient values derived respectively for pairs of relative pixel positions; derives a pixel difference value between pixel values in the first and second ranges; inverts or maintains a plus or minus sign of the pixel difference value, according to a plus or minus sign of the sum of the gradient values indicating the sum of the gradient values in the first and second ranges; derives, as a second parameter, a total sum of pixel difference values each having the plus or minus sign inverted or maintained, the pixel difference values derived respectively for the relative pixel positions; and generates a prediction image using the first and second parameters.

公开(公告)号：US20210183356A1

公开(公告)日：2021-06-17

申请号：US17257413

申请日：2019-09-06

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Rohith MARS ,  Srikanth NAGISETTY ,  Chong Soon LIM ,  Hiroyuki EHARA ,  Akihisa KAWAMURA

IPC: G10K11/34 ,  H04R1/40

Abstract: In the acoustic object extraction device, beam forming processing units generate a first acoustic signal by beam forming in an arrival direction of a signal from an acoustic object with respect to a microphone array and generate a second acoustic signal by beam forming in an arrival direction of a signal from the acoustic object with respect to a microphone array, and a common component extraction unit extracts, on the basis of a similarity between the spectrum of the first acoustic signal and the spectrum of the second acoustic signal and from the first acoustic signal and the second acoustic signal, a signal containing a common component corresponding to the acoustic object. The common component extraction unit divides the spectrums of the first acoustic signal and the second acoustic signal into a plurality of frequency sections and calculates a similarity for each of the frequency sections.

公开(公告)号：US20210044809A1

公开(公告)日：2021-02-11

申请号：US17077450

申请日：2020-10-22

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： 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

IPC: H04N19/176 ,  H04N19/52 ,  H04N19/70 ,  H04N19/105

Abstract: 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.

公开(公告)号：US20210006784A1

公开(公告)日：2021-01-07

申请号：US16875542

申请日：2020-05-15

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: H04N19/119 ,  H04N19/503 ,  H04N19/186 ,  H04N19/593 ,  H04N19/117 ,  H04N19/91 ,  H04N19/124 ,  H04N19/176

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, scaling prediction residuals of chroma samples based on prediction residuals of luma samples is not performed. When it is determined to split the luma VPDU into smaller blocks, scaling the prediction residuals of chroma samples based on prediction residuals of luma samples is performed. The block is encoded based on the prediction residuals of chroma samples.

公开(公告)号：US20200322625A1

公开(公告)日：2020-10-08

申请号：US16904032

申请日：2020-06-17

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/52 ,  H04N19/537 ,  H04N19/513

Abstract: An encoder includes circuitry and memory. The circuitry performs: obtaining first motion vector information of a first partition; obtaining second motion vector information of a second partition; deriving a set of prediction samples for the first partition; and encoding the first partition using the set. When the difference between the motion vector information is not greater than a value, the circuitry reflects a second set of samples to a first set of samples. The first set has been predicted for the first partition using the first motion vector information, and the second set has been predicted for a first range using the second motion vector information. When the difference is greater than the value, the circuitry reflects, to the first set of samples, a third set of samples predicted for a second range larger than the first range using the second motion vector information.

公开(公告)号：US20200304827A1

公开(公告)日：2020-09-24

申请号：US16894020

申请日：2020-06-05

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： 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

IPC: H04N19/513 ,  H04N19/563 ,  H04N19/132 ,  H04N19/176

Abstract: The present disclosure provides systems and methods for video coding. The systems include, for example, an image encoder comprising: circuitry; and a memory coupled to the circuitry, wherein the circuitry, in operation, performs the following: predicting a first block of prediction samples for a current block of a picture, wherein predicting the first block of prediction samples includes at least a prediction process with a motion vector from a different picture; padding the first block of prediction samples to form a second block of prediction samples, wherein the second block is larger than the first block; calculating at least a gradient using the second block of prediction samples; and encoding the current block using at least the calculated gradient.

公开(公告)号：US20200014925A1

公开(公告)日：2020-01-09

申请号：US16574728

申请日：2019-09-18

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/122 ,  H04N19/176 ,  H04N19/103 ,  H04N19/513

Abstract: An encoding apparatus includes: a circuit; and a memory. The circuit, using the memory: writes a first parameter that specifies an arrangement order for a plurality of parameters which includes a second parameter, into a header; writes a second parameter for a block into a bitstream according to the arrangement order wherein the second parameter, when positioned earlier in the arrangement order than later in the arrangement order, is written with less bits; and performs encoding operation for a block using the second parameter.

公开(公告)号：US20190273938A1

公开(公告)日：2019-09-05

申请号：US16291289

申请日：2019-03-04

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： 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

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/70 ,  H04N19/44

Abstract: An encoder includes circuitry and memory. The circuitry, using the memory: calculates at least one difference value between a plurality of pixels in a first block of a current image; calculates a denominator value used for a second block, using the difference value, the denominator value being used for a plurality of sub-blocks of the first block, the second block being one of the plurality of sub-blocks; determines a shift value, using the denominator value; calculates a first value and a second value, using at least a shift operation with the shift value; determines a prediction sample for the second block, using at least the first value and the second value; and encodes the second block, using at least the prediction sample.

公开(公告)号：US20190273931A1

公开(公告)日：2019-09-05

申请号：US16417514

申请日：2019-05-20

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/196 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: An image encoder/decoder includes circuitry and a memory coupled to the circuitry. When a parameter has a first value, the circuitry splits a block of a picture into sub blocks having a first set of geometries. When the parameter has a value other than the first value, the circuitry splits the block of the picture into sub blocks having a second set of geometries, the second set of geometries being different from the first set of geometries. The circuitry encodes/decodes the sub blocks of the block.

公开(公告)号：US20190273921A1

公开(公告)日：2019-09-05

申请号：US16287252

申请日：2019-02-27

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： 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

IPC: H04N19/119 ,  H04N19/46 ,  H04N19/107 ,  H04N19/176

Abstract: An encoder includes circuitry and memory. The circuitry, using the memory: writes, into a bitstream, one or more parameters including a first parameter indicating that a first partition of an image is to be split into a plurality of partitions including at least a second partition which is a non-rectangular partition; splits the first partition, based on the first parameter; and encodes at least the second partition.