公开(公告)号：KR1020140072937A

公开(公告)日：2014-06-16

申请号：KR1020120139391

申请日：2012-12-04

Applicant: 광운대학교 산학협력단

Inventor： 유은경 ,  남정학 ,  심동규

IPC: H04N19/50

CPC classification number: H04N19/50 ,  H04N19/176

Abstract: The present invention relates to a device and a method for improving encoding efficiency by improving a block boundary after estimating the block boundary in a general video encoding/decoding device and an expansion video encoding/decoding device. According to an embodiment of the present invention, the method for improving a block boundary of a video encoding/decoding device includes a step of loading an estimated image and/or a block; a step of setting the block boundary and/or the estimated image; and a step of correcting the estimated image and/or the boundary.

Abstract translation: 本发明涉及一种在通用视频编码/解码装置和扩展视频编码/解码装置中估计块边界之后通过改进块边界来提高编码效率的装置和方法。 根据本发明的实施例，用于改进视频编码/解码装置的块边界的方法包括加载估计图像和/或块的步骤; 设置块边界和/或估计图像的步骤; 以及校正估计图像和/或边界的步骤。

公开(公告)号：KR1020140048804A

公开(公告)日：2014-04-24

申请号：KR1020130119601

申请日：2013-10-08

Applicant: 광운대학교 산학협력단

Inventor： 남정학 ,  유은경 ,  조현호 ,  심동규

IPC: H04N19/00 ,  H04N13/00

CPC classification number: H04N19/597 ,  H04N13/271

Abstract: Disclosed are an apparatus and a method for controlling a bit rate for encoding/decoding a three-dimensional image. The apparatus for encoding a multi-view image includes an extending time point bit rate control unit for determining quantization parameter for a current block of at an extending time point by calculating complexity of a current block at the extending time point referring to complexity of a reference block at a base time point corresponding to the current block at an extending time point, and a quantizing unit for performing quantization by using a determined quantization parameter. Thus, complexity can be exactly predicted so that the bit rate control can be more exactly performed. [Reference numerals] (100) Base time point bit rate control unit; (100-1) Extending time point bit rate control unit; (120,120-1) Converting unit; (121,121-1) Inversion unit; (130,130-1) Quantization unit; (131,131-1) Inverse quantization unit; (140,140-1) Entropy encoding unit; (160,160-1) In-loop filter; (170,170-1) Frame memory; (180,180-1) Intra prediction unit; (190,190-1) Motion compensation unit; (300) Multiplexer; (AA) Extending time point image; (BB) Bit stream; (CC) Base time point image

Abstract translation: 公开了一种用于控制用于对三维图像进行编码/解码的比特率的装置和方法。 用于编码多视图图像的装置包括扩展时间点比特率控制单元，用于通过根据参考的复杂度计算延长时间点的当前块的复杂度来确定在延长时间点的当前块的量化参数 在延长时间点对应于当前块的基本时间点处的块;以及量化单元，用于通过使用确定的量化参数来执行量化。 因此，可以精确地预测复杂度，使得可以更精确地执行比特率控制。 （附图标记）（100）基本时间点比特率控制单元; （100-1）扩展时间点比特率控制单元; （120,120-1）转换单元; （121,121-1）反转单位; （130,130-1）量化单元; （131,131-1）反量化单元; （140,140-1）熵编码单元; （160,160-1）环路滤波器; （170,170-1）帧存储器; （180,180-1）内部预测单位; （190,190-1）运动补偿单元; （300）多路复用器 （AA）延长时间点图像; （BB）比特流; （CC）基准时间点图像

公开(公告)号：KR1020130087980A

公开(公告)日：2013-08-07

申请号：KR1020120011969

申请日：2012-02-06

Applicant: 광운대학교 산학협력단

Inventor： 최효민 ,  심동규 ,  남정학

IPC: H04N19/50

CPC classification number: H04N19/597 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/513 ,  H04N19/80

Abstract: PURPOSE: A scalable multi-view video decoding device and a method thereof are provided to adaptively perform encoding and decoding processes according to a single-loop decoding method and a multiple-loop decoding method, and supply scalable and multi-view encoding together, thereby offering more various and expanded encoding functions. CONSTITUTION: A first decoding unit (115) generates a first differential image by decoding the input image of a first channel. A first prediction unit (130) generates a first prediction image with reference to a reference image. If the input image of the first channel corresponds to a multiple loop mode, or if the input image corresponds to a single loop mode and the header information corresponding to the input image shows an intra type, an interpolated image generating unit (135) interpolates a first restored image generated by adding the first differential image and a second prediction image. [Reference numerals] (110) Receiving unit; (115) First decoding unit; (120) First filter; (125) First buffer; (130) First prediction unit; (135) First interpolated image generating unit; (140) Second decoding unit; (145) Second filter; (150) Second buffer; (155) Second prediction unit; (160) Second interpolated image generating unit; (165) Third decoding unit; (170) Third filter; (175) Third buffer; (180) Third prediction unit

Abstract translation: 目的：提供可扩展的多视点视频解码装置及其方法，以根据单循环解码方法和多循环解码方法自适应地执行编码和解码处理，并且一起提供可缩放和多视图编码，由此 提供更多的各种和扩展的编码功能。 构成：第一解码单元（115）通过对第一信道的输入图像进行解码来生成第一差分图像。 第一预测单元（130）参考参考图像生成第一预测图像。 如果第一通道的输入图像对应于多循环模式，或者如果输入图像对应于单​​循环模式，并且对应于输入图像的标题信息表示帧内类型，则内插图像生成单元（135）内插 通过添加第一差分图像和第二预测图像而生成的第一恢复图像。 （附图标记）（110）接收单元; （115）第一解码单元; （120）第一过滤器; （125）第一缓冲液; （130）第一预测单元; （135）第一内插图像生成单元; （140）第二解码单元; （145）第二过滤器; （150）第二缓冲器; （155）第二预测单元; （160）第二内插图像生成单元; （165）第三解码单元; （170）第三过滤器; （175）第三缓冲液; （180）第三预测单元

公开(公告)号：KR1020130078569A

公开(公告)日：2013-07-10

申请号：KR1020110147588

申请日：2011-12-30

Applicant: 광운대학교 산학협력단

Inventor： 임웅 ,  남정학 ,  유종훈 ,  오승준 ,  심동규

IPC: H04N19/167 ,  H04N19/59 ,  H04N19/105 ,  G06T9/00 ,  H04N19/82 ,  H04N21/234

CPC classification number: H04N19/167 ,  G06T9/004 ,  H04N19/105 ,  H04N19/59 ,  H04N19/82 ,  H04N21/234

Abstract: PURPOSE: A method and a device of coding and decoding screen content video for improving region of interest (ROI) based screen quality are provided to improve subjective quality of the screen content video by determining an ROI considering screen content properties, assigning more bits in a main ROI, and reducing information amount assigned in another regions. CONSTITUTION: An ROI extraction unit (201) extracts ROI information on reference to an inputted original image. An image encoder (202) applies encoding methods according to an interest rate of each region on reference to the extracted ROI information. A rate-distortion adjustment unit (203) adjusts the quality of whole images and a generated bit rate and adjusts subjective quality and the generated bit rate according to the interest rate. The ROI information of a corresponding region is added to an output bit stream (204) when the coding is performed. [Reference numerals] (200) Input image; (201) ROI extraction unit; (202) Image encoder; (203) Rate-distortion adjustment unit; (204) Output bit stream

Abstract translation: 目的：提供一种编码和解码屏幕内容视频的方法和装置，用于改善基于感兴趣区域（ROI）的屏幕质量，以通过根据屏幕内容属性确定ROI来提高屏幕内容视频的主观质量，分配更多位 主要投资回报率，并减少在其他地区分配的信息量。 构成：ROI提取单元（201）参考输入的原始图像提取ROI信息。 图像编码器（202）参考所提取的ROI信息，根据每个区域的利率来应用编码方法。 速率失真调整单元（203）调整整个图像的质量和生成的比特率，并且根据利率来调整主观质量和生成的比特率。 当执行编码时，相应区域的ROI信息被添加到输出比特流（204）。 （附图标记）（200）输入图像; （201）ROI提取单元; （202）图像编码器; （203）速率失真调整单元; （204）输出位流

公开(公告)号：KR1020120140366A

公开(公告)日：2012-12-31

申请号：KR1020110060061

申请日：2011-06-21

Applicant: 광운대학교 산학협력단

Inventor： 심동규 ,  남정학 ,  조현호 ,  유성은

IPC: H04N19/129 ,  H04N19/186

CPC classification number: H04N19/129 ,  H04N19/186 ,  H04N19/70

Abstract: PURPOSE: A method for determining an adaptive chrominance component scanning sequence by using the context of brightness components and a device thereof are provided to improve the compressibility of chrominance components by efficiently performing entrophy encoding by considering features of chrominance components. CONSTITUTION: A brightness component context deductor(103) derives the context of brightness components to adaptively derive a scanning sequence of chrominance components by using the context. An adaptive chrominance component realignment unit based on context(105) adaptively generates the scanning sequence by using the context. [Reference numerals] (102) Brightness component rearranging unit; (103) Brightness component context deductor; (104) Chrominance component rearranging unit; (105) Adaptive chrominance component rearranging unit based on context; (106) Entropy encoding unit; (108) Filtering unit in a loop; (AA) Current frame; (BB) Conversion encoding unit; (CC) Quantization unit; (DD) Inverse quantization unit; (EE) Inverse conversion encoding unit; (FF) Predicting unit in a screen; (GG) Motion compensating unit; (HH) Motion predicting unit

Abstract translation: 目的：提供一种通过使用亮度分量的上下文及其装置来确定自适应色度分量扫描序列的方法，以通过考虑色度分量的特征来有效地执行熵编码来改善色度分量的可压缩性。 构成：亮度分量上下文推导器（103）导出亮度分量的上下文，以通过使用上下文自适应地导出色度分量的扫描序列。 基于上下文（105）的自适应色度分量重新对准单元通过使用上下文自适应地生成扫描序列。 （102）亮度分量重排单元; （103）亮度分量上下文推算器; （104）色度分量重排单元; （105）基于上下文的自适应色度分量重排单元; （106）熵编码单元; （108）循环中的过滤单元; （AA）当前帧; （BB）转换编码单元; （CC）量化单元; （DD）反量化单元; （EE）逆变换编码单元; （FF）屏幕中的预测单元; （GG）运动补偿单元; （HH）运动预测单元

公开(公告)号：KR1020120138712A

公开(公告)日：2012-12-26

申请号：KR1020120064634

申请日：2012-06-15

Applicant: 한국전자통신연구원 ,  광운대학교 산학협력단

Inventor： 이하현 ,  강정원 ,  최진수 ,  김진웅 ,  심동규 ,  최효민 ,  남정학

IPC: H04N19/30 ,  H04N19/105

CPC classification number: H04N19/503 ,  H04N19/103 ,  H04N19/11 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/33 ,  H04N19/36 ,  H04N19/59

Abstract: PURPOSE: A scalable video coding and decoding method and a device using the same are provided to supply various video services on a time, a space, or an image quality side according to a use purpose or various demands. CONSTITUTION: An encoding device and a decoding device determine whether inter layer prediction is applied to an enhanced layer(S1610). If the inter layer prediction is applied, the encoding device and the decoding device perform the prediction of a current layer of the enhanced layer based on reference information generated from a decoded reference picture of a reference layer(S1630). The encoding device and the decoding device restore or encode the current picture of the enhanced layer(S1640). [Reference numerals] (AA) Start; (BB) No; (CC) Yes; (DD) End; (S1610) Predicting an inter layer?; (S1620) Predicting in an enhanced layer; (S1630) Predicting based on a generalized reference picture or a generalized reference block generated from information of a reference layer; (S1640) Restoring a picture of the enhanced layer

Abstract translation: 目的：提供可扩展的视频编码和解码方法以及使用其的设备，以便根据用途或各种需求在时间，空间或图像质量方面提供各种视频服务。 构成：编码装置和解码装置确定层间预测是否应用于增强层（S1610）。 如果应用层间预测，则编码装置和解码装置基于从参考层的解码参考图像生成的参考信息来执行增强层的当前层的预测（S1630）。 编码装置和解码装置恢复或编码增强层的当前图像（S1640）。 （附图标记）（AA）开始; （BB）否 （CC）是; （DD）结束; （S1610）预测层间？ （S1620）在增强层中预测; （S1630）基于从参考层的信息生成的广义参考图像或广义参考块进行预测; （S1640）恢复增强层的图片

公开(公告)号：KR1020090075620A

公开(公告)日：2009-07-08

申请号：KR1020080122518

申请日：2008-12-04

Applicant: 한국전자통신연구원 ,  광운대학교 산학협력단

Inventor： 정세윤 ,  김동형 ,  최진수 ,  정원식 ,  문경애 ,  홍진우 ,  심동규 ,  남정학 ,  박호종 ,  오승준 ,  안창범 ,  이영렬

IPC: H04N19/60 ,  H04N19/176

CPC classification number: H04N19/625 ,  H04N19/139 ,  H04N19/176

Abstract: An image encoder and a method thereof using a coordinate conversion of differential image for decoding the image are provided to encode input image efficiently by performing a DCT(Discrete Cosine Transform) by using a basis vector. An input image divider(510) divides an input image into a plurality of image blocks including a conversion object block. A pixel coordinates converter(550) converts the coordinate of a first pixel included in the conversion object block into the coordinates of the second pixel within the conversion object block. A coding unit encodes the conversion object block transformed of coordinate. The pixel coordinate conversion unit converts the coordinates of the first pixel in consideration of the direction of the base vector of the discrete cosine transform.

Abstract translation: 提供了一种使用用于解码图像的差分图像的坐标转换的图像编码器及其方法，通过使用基本矢量执行DCT（离散余弦变换）来有效地对输入图像进行编码。 输入图像分割器（510）将输入图像分割成包括转换对象块的多个图像块。 像素坐标转换器（550）将包括在转换对象块中的第一像素的坐标转换为转换对象块内的第二像素的坐标。 编码单元对转换的坐标系进行编码。 像素坐标转换单元考虑到离散余弦变换的基矢量的方向，来转换第一像素的坐标。

公开(公告)号：KR100813001B1

公开(公告)日：2008-03-13

申请号：KR1020060095876

申请日：2006-09-29

Applicant: 한국전자통신연구원 ,  광운대학교 산학협력단 ,  세종대학교산학협력단

Inventor： 최해철 ,  정세윤 ,  서정일 ,  백승권 ,  장인선 ,  김재곤 ,  문경애 ,  장대영 ,  홍진우 ,  김진웅 ,  심동규 ,  이영렬 ,  오승준 ,  안창범 ,  남정학 ,  박호종

IPC: H04N19/137 ,  H04N19/60

Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야
본 발명은 차분신호의 크기와 부호의 분리를 이용한 동영상 부호화/복호화 장치 및 그 방법에 관한 것임.
2. 발명이 해결하려고 하는 기술적 과제
본 발명은 차분신호(현재 부호화대상이 되는 원영상과 그 원영상에 대한 예측 영상 간의 차이)를 크기와 부호로 분리하여, 크기 신호에 대해서만 변환부호화 및 양자화를 수행하고 부호 정보는 수신 측에서 복호화에 이용할 수 있도록 별도로 전송함으로써, 변환부호화의 성능 개선을 통하여 동영상 부호화의 효율을 향상시킬 수 있는, 차분신호의 크기와 부호의 분리를 이용한 동영상 부호화/복호화 장치 및 그 방법을 제공하는데 그 목적이 있음.
3. 발명의 해결방법의 요지
본 발명은, 차분신호의 크기와 부호의 분리를 이용한 동영상 부호화 장치에 있어서, 현재 부호화 대상이 되는 원영상에 대하여 예측 영상을 생성하기 위한 영상 예측 수단; 상기 원영상과 상기 예측 영상 간의 차분신호를 생성하기 위한 차분신호 생성 수단; 상기 차분신호로부터 크기와 상기 차분신호의 복원에 필요한 부호비트(보상용 부호비트)를 생성하기 위한 크기/부호 분리 수단; 상기 차분신호 크기에 대해서는 변환부호화, 양자화, 및 엔트로피 인코딩을 수행하고, 상기 보상용 부호비트에 대해서는 엔트로피 인코딩을 수행하기 위한 부호화 수단; 및 상기 부호화 수단에서 변환부호화 및 양자화된 차분신호 크기를 역변환하여 원래의 차분신호로 복원한 후 상기 보상용 부호비트를 이용하여 부호 보상하고, 상기 부호보상된 차분신호에 움직임 보상함으로써 원 영상을 복원하여 새로운 기준영상으로 저장하기 위한 복호화 수단을 포함함.
4. 발명의 중요한 용도
본 발명은 동영상 부호화/복호화 장치 등에 이용됨.
변환부호화, 이산여현변환(DCT), 영상부호화, 영상압축, 차분신호, 보상용 부호비트

公开(公告)号：KR1020080007060A

公开(公告)日：2008-01-17

申请号：KR1020060095876

申请日：2006-09-29

Applicant: 한국전자통신연구원 ,  광운대학교 산학협력단 ,  세종대학교산학협력단

Inventor： 최해철 ,  정세윤 ,  서정일 ,  백승권 ,  장인선 ,  김재곤 ,  문경애 ,  장대영 ,  홍진우 ,  김진웅 ,  심동규 ,  이영렬 ,  오승준 ,  안창범 ,  남정학 ,  박호종

IPC: H04N19/137 ,  H04N19/60

CPC classification number: H04N19/137 ,  H04N19/103 ,  H04N19/124 ,  H04N19/13 ,  H04N19/567 ,  H04N19/60

Abstract: An apparatus and a method for encoding/decoding a video by using separation of amplitude and sign of a differential signal are provided to take an absolute value for a differential signal generated after motion prediction, thereby improving the correlation of pixels within a block where DCT(Discrete Cosine Transform) will be performed and accordingly increasing compression efficiency. A video prediction unit generates a prediction video with respect to an original video as an object for current encoding. A differential signal generating unit generates a differential signal between the original video and the prediction video. An amplitude/sign separating unit generates a sign bit(sign bit for compensation) for performing restoring of the differential signal and amplitude from the differential signal. An encoding unit performs transform encoding, quantization and entropy encoding with respect to the differential signal amplitude, and performs entropy encoding of the sign bit for compensation. A decoding unit performs inverse-transform of the differential signal amplitude, transform-encoded and quantized in the encoding unit, so as to perform restore into the original differential signal. By performing sign compensation by using the sign bit for compensation and performing motion compensation for the sign-compensated differential signal, the decoding unit restores the original video and stores the restored original video as a new reference video.

Abstract translation: 提供了通过使用差分信号的幅度和符号的分离来对视频进行编码/解码的装置和方法，以获得在运动预测之后生成的差分信号的绝对值，从而提高DCT（ 离散余弦变换），从而提高压缩效率。 视频预测单元生成关于作为当前编码的对象的原始视频的预测视频。 差分信号产生单元在原始视频和预测视频之间产生差分信号。 振幅/符号分离单元产生用于从差分信号中恢复差分信号和振幅的符号位（用于补偿的符号位）。 编码单元对差分信号幅度进行变换编码，量化和熵编码，并执行用于补偿的符号位的熵编码。 解码单元对编码单元进行变换编码和量化的差分信号幅度进行逆变换，从而对原始差分信号进行恢复。 通过使用用于补偿的符号位进行符号补偿并对符号补偿的差分信号执行运动补偿，解码单元恢复原始视频并将恢复的原始视频存储为新的参考视频。

公开(公告)号：KR101636649B1

公开(公告)日：2016-07-05

申请号：KR1020150057215

申请日：2015-04-23

Applicant: 삼성전자주식회사 ,  광운대학교 산학협력단

Inventor： 조대성 ,  최웅일 ,  송관웅 ,  주영훈 ,  김용석 ,  남정학 ,  심동규 ,  지봉일

IPC: H04N19/174 ,  H04N19/436 ,  H04N19/50

Abstract: 슬라이스단위로분할된동영상을처리하는동영상부호화/복호화장치및 부호화방법/복호화방법을제공한다. 본발명의실시예에따른복호화장치는, 복호화장치에있어서, 비트스트림으로부터블록관련정보를획득하고, 상기블록관련정보를기반으로하여, 프레임을적어도두 개의행들을포함하는복수의블록들로분할하는분할부; 제1 행에서의제2 블록을복호화하여복호화정보를획득하는제어부; 및상기복호화정보를이용하여상기제1 행에서의제3 블록및 제2 행에서의제1 블록을복호화하는복호화기를포함하고, 상기복호화정보는예측정보및 움직임벡터관련정보를포함하고, 상기블록관련정보는분할정보(split information)를포함한다.