公开(公告)号：US10764574B2

公开(公告)日：2020-09-01

申请号：US15739927

申请日：2016-03-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Han Boon Teo ,  Chong Soon Lim ,  Takahiro Nishi ,  Kengo Terada ,  Tadamasa Toma

IPC: H04N19/103 ,  H04N19/11 ,  G06N20/00 ,  H04N19/176 ,  H04N19/136 ,  H04N19/82 ,  H04N19/117 ,  H04N19/14 ,  H04N19/46

Abstract: To provide an encoding method for reducing deterioration in encoding efficiency when encoding a video/an image by selecting one operation mode out of a number of operation modes. The encoding method includes: extracting one or more features from one or more reconstructed pixel groups; categorizing the one or more reconstructed pixel groups using the extracted one or more features and a first machine learning model; and performing an encoding process on a current block of image samples included in a current picture using a parameter set corresponding to a result of the categorizing, the parameter set being one of a plurality of predefined parameter sets.

公开(公告)号：US11523116B2

公开(公告)日：2022-12-06

申请号：US17145531

申请日：2021-01-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Chong Soon Lim ,  Takahiro Nishi ,  Tadamasa Toma

IPC: H04N19/124 ,  H04N19/18 ,  H04N19/46 ,  H04N19/126 ,  H04N19/14 ,  H04N19/159 ,  H04N19/61 ,  H04N19/91

Abstract: The encoding method includes: inverse-quantizing one or more first transform coefficients quantized; deriving a quantization parameter based on the one or more first transform coefficients inverse-quantized; and inverse-quantizing a second transform coefficient quantized, based on the derived quantization parameter.

公开(公告)号：US20210136379A1

公开(公告)日：2021-05-06

申请号：US17145531

申请日：2021-01-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Chong Soon Lim ,  Takahiro Nishi ,  Tadamasa Toma

IPC: H04N19/124 ,  H04N19/18 ,  H04N19/46 ,  H04N19/126 ,  H04N19/14 ,  H04N19/159 ,  H04N19/61 ,  H04N19/91

Abstract: The encoding method includes: inverse-quantizing one or more first transform coefficients quantized; deriving a quantization parameter based on the one or more first transform coefficients inverse-quantized; and inverse-quantizing a second transform coefficient quantized, based on the derived quantization parameter.

公开(公告)号：US11233987B2

公开(公告)日：2022-01-25

申请号：US16934235

申请日：2020-07-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Han Boon Teo ,  Chong Soon Lim ,  Takahiro Nishi ,  Kengo Terada ,  Tadamasa Toma

IPC: H04N19/103 ,  H04N19/11 ,  G06N20/00 ,  H04N19/176 ,  H04N19/136 ,  H04N19/82 ,  H04N19/117 ,  H04N19/14 ,  H04N19/46

Abstract: To provide an encoding method for reducing deterioration in encoding efficiency when encoding a video/an image by selecting one operation mode out of a number of operation modes. The encoding method includes: extracting one or more features from one or more reconstructed pixel groups; categorizing the one or more reconstructed pixel groups using the extracted one or more features and a first machine learning model; and performing an encoding process on a current block of image samples included in a current picture using a parameter set corresponding to a result of the categorizing, the parameter set being one of a plurality of predefined parameter sets.

公开(公告)号：US10939105B2

公开(公告)日：2021-03-02

申请号：US16086512

申请日：2017-03-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Chong Soon Lim ,  Takahiro Nishi ,  Tadamasa Toma

IPC: H04N19/124 ,  H04N19/18 ,  H04N19/46 ,  H04N19/126 ,  H04N19/14 ,  H04N19/159 ,  H04N19/61 ,  H04N19/91

Abstract: The encoding method includes: inverse-quantizing one or more first transform coefficients quantized; deriving a quantization parameter based on the one or more first transform coefficients inverse-quantized; and inverse-quantizing a second transform coefficient quantized, based on the derived quantization parameter.