Lg Electronics Inc.

Samsung Electronics Co., Ltd.

Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Beijing Xiaomi Mobile Software Co., Ltd.

Stats Chippac Pte. Ltd.

Rosedale Dynamics LLC

Xiaomi Inc.

Other

Vivo Mobile Communication Co., Ltd.

Ewha University-industry Collaboration Foundation

Industry-academic Cooperation Foundation, Chosun University

Hyundai Motor Corporation

H Cell, Inc.

Jaehyun Lim

Seunghwan Kim

Moonmo Koo

Yongjoon Jeon

Seungwook Park

Joonyoung Park

Byeongmoon Jeon

Jungsun Kim

Naeri Park

Mehdi Salehifar

Younghee Choi

Junghak Nam

Jaewon Sung

Hendry Hendry

Chulkeun Kim

Jin Seong Heo

Hyeongmoon Jang

Jangwon Choi

Sunmi Yoo Yoo

Jungah Choi

Ling Li

Jungdong Seo

Seethal Paluri

Seung Hwan Kim

Jie Zhao

Jingyeong Kim

Taeil Chung

Sangchul Kim

Jaeho Lee

Jung Hak Nam

Hyeong Moon Jang

SeongMin Lee

Inho Choi

Nae Ri Park

Sungmin Song

Bumshik Lee

Choong Bin Yim

Kwangjin Lee

Joungin Yang

Medhi Salehifar

Sangoh Jeong

Younghwan Park

DongSam Park

KyuWon Lee

JiHoon Oh

SinJae Lee

Hyunjong Moon

JongVin Park

Sang Oh Jeong

Hyuntaek Choi

Byeong Moon Jeon

Taehyung Kim

Sehoon Yea

Eunyong Son

Jongwon Choi

Yonghoon Kim

Yun Seok Choi

Sangwook Han

Sung-Jun Lee

Joonhee Lee

Thomas Byunghak Cho

JinGwan Kim

Heeyoub Kang

SangShin Han

Kyuwoon Kim

SunYoung Chun

Je-Won Kang

Sayoon Kang

Dongha Lee

Soo Kyung Ryu

Seoungwook Park

Gwangjin Lee

Yuntae Lee

Beyongmoon Jeon

Dongsam Park

Min-Joo Kang

A method by which a decoding device decodes a video, according to the present document, can comprise the steps of: acquiring, from a bitstream, information that indicates the level value of a transform coefficient in a current block; deriving, on the basis of whether the number of context coded bins maximally usable for the transform coefficient is greater than or equal to a threshold value, a rice parameter for the information that indicates the level value of the transform coefficient; deriving, on the basis of the rice parameter, a bin string for the information that indicates the level value of the transform coefficient; and deriving the level value of the transform coefficient on the basis of the bin string.

Entropy coding method and device in video/image coding system

An image decoding method according to this document comprises a step of deriving, for transform coefficients, modified transform coefficients on the basis of inverse secondary transform, wherein: the step of deriving the modified transform coefficients may comprise a step of deriving a transform kernel to be applied to the inverse secondary transform; on the basis of both the horizontal and vertical lengths of a target block being greater than or equal to 8 and the horizontal or vertical length being 8, the transform kernel may be set to a 64×32 matrix; and on the basis of both the horizontal and vertical lengths of the target block being 8, a 64×16 matrix sampled from the 64×32 matrix may be applied to the inverse secondary transform of the target block.

Image coding method and apparatus therefor

A method for processing a video includes determining a horizontal transform type index for a horizontal transform kernel and a vertical transform type index for a vertical transform kernel of a transform block in the video signal, determining a transform region in which a significant transform coefficient exists in the transform block based on the horizontal transform type index, the vertical transform type index, and a size of the transform block, and applying inverse-transform to the transform region based on the horizontal transform type index and the vertical transform type index. A width of the transform region is determined based on a comparison between the horizontal transform type index and a reference value and a height of the transform region is determined based on a comparison between the vertical transform type index and the reference value.

Method for processing video signal by using transform, and apparatus therefor

Embodiments of the present invention provide video signal processing methods. A video signal encoding method according to an embodiment of the present invention comprises checking a transform block including residual samples except a prediction sample from a picture of the video signal, generating transform coefficients through a transform for the residual samples of the transform block based on a size of the transform block, and performing quantization and entropy coding the transform coefficients, wherein generating the transform coefficients includes, applying a forward primary transform to each of a horizontal direction and vertical direction of the transform block including the residual samples, and not applying a forward non-separable secondary transform to the transform block to which the primary transform has been applied when the size of the transform block is smaller than or equal to 4×4, and applying the forward non-separable secondary transform to the transform block when the size of the transform block is greater than 4×4.

Methods and apparatuses for processing video signal

An image decoding method according to the present document comprises the steps of: receiving an intra-MIP syntax element for a first target block; deriving the value of the intra-MIP syntax element; setting a variable MIP flag for the preset specific area, which is the same as the area of the first target block, on the basis of the value of the intra-MIP syntax element; deriving an intra-prediction mode of the second target block on the basis of the variable MIP flag; and deriving a prediction sample of the second target block on the basis of the intra-prediction mode of the second target block.

Image coding method and device therefor

According to the disclosure of the present document, image information acquired via a bitstream includes POC information, and a non-reference picture flag related to whether a picture is not used as a reference picture. A POC value of a current picture is derived on the basis of the POC information, and the POC information includes POC information of a previous picture in decoding order for the current picture. The previous picture in the decoding order for deriving the POC value of the current picture may be limited to a picture where a value of the non-reference picture flag is 0. Accordingly, an incorrect POC value can be prevented from being derived in video/image coding.

Image coding method based on POC information and non-reference picture flag in video or image coding system

An image encoding/decoding apparatus and method are provided. An image decoding method performed by an image decoding apparatus according to the present disclosure may comprise deriving a motion shift of a current block using motion information of a neighboring block of the current block, determining a collocated block of the current block using the motion shift, deriving a motion vector for at least one control point (CP) of the determined collocated block, and deriving at least one control point motion vector (CPMV) of the current block using the motion vector for the at least one CP.

Image encoding/decoding method and device using affine TMVP, and method for transmitting bit stream

An image decoding method performed by a decoding device according to the present document is characterized by comprising the steps of: acquiring image information including a Block-based Delta Pulse Code Modulation (BDPCM) available flag; and generating a reconstructed picture on the basis of the image information, wherein the BDPCM available flag relates to whether BDPCM is available for chroma and luma blocks.

Image decoding method and device for same

A firmware update method includes requesting a hardware security module (HSM) to store version information of a current firmware stored in a flash memory and storing, by the HSM, the version information of the current firmware. The firmware update method also includes erasing the flash memory when the version information of the current firmware is stored by the HSM and writing new downloaded firmware to the flash memory; verifying an integrity of the new firmware. The firmware update method further includes requesting the HSM to sense downgrade of the new firmware when the integrity is verified. The firmware update method additionally includes determining, by the HSM, whether the firmware is downgraded by comparing the stored version information and the version information of the new firmware. The firmware update method also includes confirming a reprogramming success when it is determined that the firmware is not downgraded by the HSM.

Firmware update method and apparatus for a MCU of a vehicle

An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may include determining a chroma array type of a current image, determining an adaptive loop filter (ALF) indicator of a chroma component based on the chroma array type, and performing ALF filtering with respect to a reconstructed image based on a value of the ALF indicator. The value of the ALF indicator may be determined to be a predetermined value without being obtained from a bitstream, based on the chroma array type being a predetermined type, and the value of the ALF indicator may be obtained from the bitstream, based on the chroma array type being not the predetermined type.

Image encoding/decoding method and device for signaling filter information on basis of chroma format, and method for transmitting bitstream

An image decoding method according to the present document comprises a step of deriving a corrected transform coefficient by applying low-frequency non-separable transform (LFNST) to a transform coefficient, wherein an LFNST set for applying the LFNST may be derived on the basis of an intra-prediction mode applied to the current block, and an LFNST matrix may be derived on the basis of the size of the current block and the LFNST set, the LFNST matrix derived as a 16×16 dimensional matrix if the width or the height of the current block is 4 and the width and the height are both 4 or greater, and the LFNST matrix derived as a 64×32 dimensional matrix if the width or the height of the current block is 8 and the width and the height are both 8 or greater. Therefore, coding performance capable of being brought by the LFNST can be maximized within the implementation complexity permitted in forthcoming standards.

Method and device for designing low-frequency non-separable transform

The present disclosure relates to a technique for encoding and decoding video data, and more particularly, to a method for performing inter-prediction in an effective manner. The present disclosure combines an inter-prediction method using an AMVP mode and an inter-prediction method using a merge mode so as to propose a method for using the same candidate. The method for encoding video data proposed by the present disclosure comprises the following steps: receiving mode information on an inter-prediction method of a current block; determining, on the basis of the received mode information, whether the interprediction method to be applied to the current block is an AMVP mode or a merge mode; and selecting a candidate to derive motion information of the current block, wherein the candidate is selected in a left region, top region and corner region of the current block and in the same position block as the current block, and the AMVP mode and the merge mode are applied on the basis of the selected candidate.

Method for encoding and decoding video, and apparatus using same

The present invention relates to a method and apparatus for encoding or decoding a video signal. According to the present invention, a plurality of reference units for image prediction of the current unit is acquired and combined to obtain a unit prediction value, thereby improving the accuracy of image prediction. More particularly, the present invention relates to a method for inducing a variety of reference units using a motion vector prediction value or a motion vector which is used in conventional inter-prediction, and also relates to a method which combines the reference units so as to obtain the prediction value for the current unit. In addition, the present invention relates to a method which involves acquiring a plurality of reference units for a merging mode, and combining the reference units so as to perform image prediction.

Method and apparatus for processing a video signal

An image decoding method according to the present document comprises the steps of: deriving transform coefficients through inverse quantization on the basis of quantized transform coefficients for a target block; deriving modified transform coefficients on the basis of an inverse reduced secondary transform (RST) for the transform coefficients; and generating, on the basis of an inverse primary transform for the modified transform coefficients, a restoration picture based on residual samples for the target block, wherein the modified transform coefficients derived according to the inverse RST are two-dimensionally arranged according to the order of a row priority direction or a column priority direction according to an intra prediction mode to be applied to the target block.

Image coding method based on secondary transform, and device therefor

Embodiments of the present disclosure provide a method and apparatus for processing a video signal. A method for decoding a video signal according to an embodiment of the present disclosure includes obtaining a sub-block transform (SBT) flag indicating whether an SBT is applied, wherein the SBT represents a transform applied to one of sub-blocks split from a coding unit, determining a transform unit from the coding unit based on the SBT flag, determining a size value of the transform unit as a first reference value if DST-7 (Discrete Sine Transform type 7) or DCT-8 (Discrete Cosine Transform type 8) is applied and the size value of the transform unit is greater than the first reference value and less than a third reference value and determining the size value as a second reference value if DCT-2 (Discrete Cosine Transform type 2) is applied and the size value is equal to or greater than the third reference value, wherein the third reference value is greater than the second reference value and the second reference value is greater than the first reference value, obtaining transform coefficients based on the size value, and performing an inverse transform on the transform coefficients. A data processing time and the amount of data necessary for a transform can be reduced by performing coding in consideration of a region reduced according to a block size.

Method for processing image on basis of transform and device therefor

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Seoul, South Korea

Jaehyun Lim