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公开(公告)号：KR1020130056272A
公开(公告)日：2013-05-29
申请号：KR1020130055777
申请日：2013-05-16
Applicant: 한국전자통신연구원
IPC: H04N7/24
CPC classification number: H04N19/184 , H04N19/13
Abstract: PURPOSE: An encoding and decoding method using adaptive bit depth reduction and a device thereof are provided to prevent an image from being encoded at an excessive bit depth by adaptively selecting and performing bit depth reduction by macro block unit. CONSTITUTION: An encoding device includes a bit depth control unit(110), a bit depth reducing unit(120), a bit depth quantization unit(130), and a bit depth increasing unit(140). When the bit depth control unit determines the bit depth reduction of an input signal, the bit depth reducing unit reduces a bit depth of the input signal. The bit depth reducing unit shifts the bit depth as much as a selected value to reduce the bit depth or reduces the bit depth by using a mapping table. [Reference numerals] (110) Bit depth control unit; (120) Bit depth reducing unit; (130) Bit depth quantization unit; (140) Bit depth increasing unit; (AA) Input video signal; (BB) Infra-frame prediction; (CC) Motion correction; (DD) Motion estimation; (EE) Conversion; (FF) De-blocking filter; (GG) Entropy encoding
Abstract translation: 目的：提供一种使用自适应比特深度减少的编码和解码方法及其装置，以通过以宏块单位自适应地选择和执行比特深度降低来防止图像被编码在过度比特深度。 构成：编码装置包括比特深度控制单元（110），比特深度减少单元（120），比特深度量化单元（130）和比特深度增加单元（140）。 当位深度控制单元确定输入信号的位深度降低时，位深度降低单元减小输入信号的位深度。 比特深度减少单元将比特深度移动到选择的值以减少比特深度或通过使用映射表来减少比特深度。 （附图标记）（110）位深度控制单元; （120）位深度减少单元; （130）比特深度量化单元; （140）位深度增加单位; （AA）输入视频信号; （BB）帧内预测; （CC）运动校正; （DD）运动估计; （EE）转换; （FF）去块过滤器; （GG）熵编码
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公开(公告)号：KR1020120139642A
公开(公告)日：2012-12-27
申请号：KR1020120130490
申请日：2012-11-16
Applicant: 한국전자통신연구원
IPC: H04N19/105 , H04N19/11
CPC classification number: H04N19/105 , H04N19/11 , H04N19/157 , H04N19/176 , H04N19/46 , H04N19/503 , H04N19/593
Abstract: PURPOSE: An adaptive image encoding device and a method thereof are provided to improve the performance of image compression by adaptively selecting an encoding parameter. CONSTITUTION: An adaptive image encoding device determines a reference block for encoding a current block(S110). The adaptive image encoding device determines an encoding parameter of the reference block(S120). The adaptive image encoding device determines a characteristic of the reference block(S130). The adaptive image encoding device adaptively encodes the current block by using the encoding parameter(S140). [Reference numerals] (AA) Start; (BB) End; (S110) Determining a reference block; (S120) Determining a encoding parameter of the reference block; (S130) Determining a feature of the reference block; (S140) Encoding an encoding target block
Abstract translation: 目的：提供自适应图像编码装置及其方法，以通过自适应地选择编码参数来提高图像压缩的性能。 构成：自适应图像编码装置确定用于对当前块进行编码的参考块（S110）。 自适应图像编码装置确定参考块的编码参数（S120）。 自适应图像编码装置确定参考块的特性（S130）。 自适应图像编码装置通过使用编码参数自适应地编码当前块（S140）。 （附图标记）（AA）开始; （BB）结束; （S110）确定参考块; （S120）确定参考块的编码参数; （S130）确定参考块的特征; （S140）对编码对象块进行编码
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公开(公告)号：KR1020110073257A
公开(公告)日：2011-06-29
申请号：KR1020100121200
申请日：2010-12-01
Applicant: 한국전자통신연구원
CPC classification number: H04N19/52 , H04N19/172 , H04N19/176 , H04N19/513
Abstract: PURPOSE: An image encoding/decoding apparatus and a method thereof are provided to effectively predict an MV in the compression and encoding of an image. CONSTITUTION: In case the arbitrary MV(Motion Vector) of a current block is predicted within an image, an MV prediction unit(100) performs the prediction of the MV with at least one of the vector information of an MV corresponding to a peripheral block and the vector information of the previous MV of the current block. Difference decision units(201,202) decide difference information about the MV of the current block on the basis of the predicted MV and the actual MV of the current block.
Abstract translation: 目的：提供图像编码/解码装置及其方法，以有效地预测图像的压缩和编码中的MV。 构成：在图像内预测当前块的任意MV（运动矢量）的情况下，MV预测单元（100）使用对应于周边块的MV的向量信息中的至少一个来执行MV的预测 以及当前块的先前MV的矢量信息。 差分决定单元（201,202）基于预测MV和当前块的实际MV来决定当前块的MV的差分信息。
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公开(公告)号：KR1020110068793A
公开(公告)日：2011-06-22
申请号：KR1020100050037
申请日：2010-05-28
Applicant: 한국전자통신연구원
IPC: H04N19/11 , H04N19/174 , H04N19/51
Abstract: PURPOSE: An image encoding/decoding apparatus and method thereof are provided to efficiently predict an encoding parameter from a block within a slide in which a target block is included and to increase image compression performance. CONSTITUTION: A control unit determines a reference block for the prediction of an in-screen encoding parameter(S210). The control unit predicts the encoding parameter through the encoding parameter of the reference block(S220). The control unit performs entropy encoding about the encoding parameter through the encoding parameter of the reference block(S230).
Abstract translation: 目的：提供一种图像编码/解码装置及其方法，用于从包含目标块的幻灯片内的块中有效地预测编码参数，并增加图像压缩性能。 构成：控制单元确定用于预测屏幕内编码参数的参考块（S210）。 控制单元通过参考块的编码参数预测编码参数（S220）。 控制单元通过参考块的编码参数执行关于编码参数的熵编码（S230）。
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公开(公告)号：KR1020110068792A
公开(公告)日：2011-06-22
申请号：KR1020100050034
申请日：2010-05-28
Applicant: 한국전자통신연구원
CPC classification number: H04N19/105 , H04N19/11 , H04N19/157 , H04N19/176 , H04N19/46 , H04N19/503 , H04N19/593
Abstract: PURPOSE: An adaptive image encoding apparatus and method thereof are provided to adaptively select an encoding parameter of an encoding target block from a reference block and to increase image compression performance. CONSTITUTION: A control unit determines a reference block for the coding of a current block(S110). The control unit determines an encoding parameter of the reference block(S120). The control unit determines the property of the reference block based on the encoding parameter of the reference block(S130). The control unit encodes the current block through a determined encoding parameter(S140).
Abstract translation: 目的：提供一种自适应图像编码装置及其方法，用于从参考块自适应地选择编码目标块的编码参数并增加图像压缩性能。 构成：控制单元确定用于当前块的编码的参考块（S110）。 控制单元确定参考块的编码参数（S120）。 控制单元基于参考块的编码参数确定参考块的属性（S130）。 控制单元通过确定的编码参数对当前块进行编码（S140）。
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Patent Agency Ranking
公开(公告)号：KR1020100112247A
公开(公告)日：2010-10-19
申请号：KR1020090030661
申请日：2009-04-09
Applicant: 한국전자통신연구원
IPC: H04N19/11
CPC classification number: H04N19/11 , H04N19/176
Abstract: PURPOSE: An apparatus and a method for predicting most probable mode in an intra prediction system using prediction mode information are provided to improve encoding efficiency and reduce the bit rate. CONSTITUTION: A peripheral block read unit(402) reads each prediction mode and a corresponding location with a current block. A weighted value allocation unit(404) uses a relative weighted value in consideration of the relative position of the current block and the weighted value is assigned to the peripheral block each prediction mode.
Abstract translation: 目的：提供一种使用预测模式信息预测帧内预测系统中最可能模式的装置和方法，以提高编码效率并降低比特率。 构成：外围块读取单元（402）读取每个预测模式和与当前块相对应的位置。 加权值分配单元（404）考虑到当前块的相对位置使用相对加权值，并且将加权值分配给外围块每个预测模式。
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47.发明公开
公开(公告)号：KR1020100038060A
公开(公告)日：2010-04-12
申请号：KR1020090093127
申请日：2009-09-30
Applicant: 한국전자통신연구원 , 세종대학교산학협력단
IPC: H04N19/12 , H04N19/625
CPC classification number: G06T9/007 , G06T9/004 , H04N7/17318 , H04N19/12 , H04N19/132 , H04N19/147 , H04N19/149 , H04N19/19 , H04N19/46 , H04N19/70 , H04N21/236 , H04N19/625 , H04N19/63
Abstract: PURPOSE: Encoding/decoding apparatus and method using DCT/DST selectively are provided to increase a compression ratio of an image block by performing inter/intra prediction between images for a fixed size blocks and then conversion and quantization. CONSTITUTION: A first conversion unit(220) converts a target image into a first conversion coefficient using DCT(Discrete Cosine Transform). A second conversion unit(230) converts the target image into a second conversion coefficient using DST(Discrete Sine Transform). A conversion method decision unit(260) selects the first or second conversion coefficients as a conversion coefficients for the target image. The first conversion unit creates a first decoding image for the target image based on the first conversion coefficient. The second conversion unit creates a decoding image for the target image based on the second conversion coefficient.
Abstract translation: 目的：选择性地使用DCT / DST的编码/解码装置和方法被提供以通过对固定大小的块进行图像之间的帧间/帧内预测，然后进行转换和量化来增加图像块的压缩比。 构成：第一转换单元（220）使用DCT（离散余弦变换）将目标图像转换为第一转换系数。 第二转换单元（230）使用DST（离散正弦变换）将目标图像转换为第二转换系数。 转换方法决定单元（260）选择第一或第二转换系数作为目标图像的转换系数。 第一转换单元基于第一转换系数创建用于目标图像的第一解码图像。 第二转换单元基于第二转换系数创建目标图像的解码图像。
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公开(公告)号：KR1020100007728A
公开(公告)日：2010-01-22
申请号：KR1020090060478
申请日：2009-07-03
Applicant: 한국전자통신연구원 , 광운대학교 산학협력단 , 경희대학교 산학협력단
CPC classification number: H04N19/00
Abstract: PURPOSE: A filter for deblocking an intra macro block and a filtering method therefor are provided to perform adaptive deblocking filtering using a video block unit quantization parameter in a macro block boundary included in the intra macro block. CONSTITUTION: A filtering value generating unit(610) generates a filtering value based on an adjacent pixel value of the outermost pixel adjacent to a boundary of an intra macro block and a quantization parameter of the intra macro block. A deblocking filter(620) performs deblocking filtering on the outermost pixel based on the filtering value. If the filtering value is larger than a positive number critical value, the filtering value generating unit determines the positive critical value as the filtering value.
Abstract translation: 目的：提供一种用于去块内部宏块的滤波器及其滤波方法，以使用在宏块内包含的宏块边界中的视频块单位量化参数进行自适应去块滤波。 构成：滤波值生成部（610）基于与宏块内部的宏块的边界相邻的最外边的像素的相邻像素值和宏块的量化参数，生成滤波值。 去块滤波器（620）基于滤波值对最外面的像素进行去块滤波。 如果滤波值大于正数临界值，则滤波值生成单元将正临界值确定为滤波值。
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公开(公告)号：KR100938553B1
公开(公告)日：2010-01-22
申请号：KR1020080025002
申请日：2008-03-18
Applicant: 한국전자통신연구원
IPC: H04N19/30
Abstract: 본 발명은 스케일러블 영상 부/복호화기에서 주변 블록 정보를 이용한 바운더리 처리 방법 및 장치에 관한 것으로, H.264 스케일러블 영상 코덱(Scalable Video Codec: SVC)의 싱글-루프-디코딩(single-loop-decoding) 방식의 특성을 활용하여, 작은 하위 레이어의 부/복호화 시에 상위 레이어의 이미 복원된 정보를, 다운 샘플링 과정을 통해 하위 레이어의 대응 블록의 확대에 필요한 바운더리 정보로 이용하여, 영상 블록의 확대시에 필요한 바운더리 처리 방법을 제공한다.
영상 부호화, 영상 복호화, 레이어, 블록-
公开(公告)号：KR100846870B1
公开(公告)日：2008-07-16
申请号：KR1020060095786
申请日：2006-09-29
Applicant: 한국전자통신연구원 , 광운대학교 산학협력단 , 세종대학교산학협력단
Inventor： 정세윤 , 최해철 , 서정일 , 백승권 , 장인선 , 김재곤 , 문경애 , 장대영 , 홍진우 , 김진웅 , 안창범 , 오승준 , 심동규 , 박호종 , 이영렬 , 전수열
IPC: H04N19/60
Abstract: 본 발명은 다수의 기본 블록들의 다차원 구성을 통한 다단계 변환 장치 및 그 방법에 관한 것이다. 본 발명은 블록 단위의 원영상 또는 차영상의 DCT 변환계수를 사용하는 비디오 데이터 압축의 성능을 향상시키기 위하여 인접한 블록들의 변환 계수들을 모아서 추가적인 변환을 수행함으로써, 압축 효율을 향상시키기 위한, 다수의 기본 블록들의 다차원 구성을 통한 다단계 변환 장치 및 그 방법을 제공하는데 그 목적이 있다.
본 발명은 입력되는 영상데이터를 DCT 변환하고, 상기 DCT 변환된 소정크기의 블록 R개(R은 2이상의 자연수)를 선택하는 단계; 상기 선택된 R개의 각 블록에서 동일한 주파수의 변환계수들을 1차원으로 배열하는 단계; 및 상기 1차원으로 배열된 변환계수들을 다시 일차원 변환하는 단계;를 포함하는 다수의 기본블록들의 다차원 구성을 통한 다단계 변환 방법을 개시한다.
다차원 변환, 다단계 변환, 다차원 구성, 이차원 변환
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