公开(公告)号：KR1020130062973A

公开(公告)日：2013-06-13

申请号：KR1020130060132

申请日：2013-05-28

Applicant: 한국전자통신연구원

Inventor： 최해철 ,  정세윤 ,  조숙희 ,  김휘용 ,  이진호 ,  이하현 ,  임성창 ,  김종호 ,  최진수 ,  홍진우 ,  김진웅

IPC: H04N19/59

CPC classification number: H04N19/52 ,  H04N19/172 ,  H04N19/176 ,  H04N19/513

Abstract: PURPOSE: An encoding/decoding device and a method thereof for predicting an arbitrary motion vector are provided to consider a motion vector of a neighboring vector and a previous motion vector by scaling vector information of a motion vector of a neighboring vector and a previous motion vector. CONSTITUTION: When predicting an arbitrary motion vector in a current block within an image, the prediction is performed by using vector information of a motion vector corresponding to a neighboring vector and vector information of a previous motion vector of a current vector(S10). A differential determination unit determines differential information with respect to a motion vector of the current block based on the motion vector predicted by a motion vector prediction unit and an actual motion vector of the current block(S20). [Reference numerals] (AA) Start; (BB) Finish; (S10) Current vector; (S20) Current block

Abstract translation: 目的：提供一种用于预测任意运动矢量的编码/解码装置及其方法，通过缩放相邻矢量和先前运动矢量的运动矢量的矢量信息来考虑相邻矢量和先前运动矢量的运动矢量 。 构成：当预测图像内的当前块中的任意运动矢量时，通过使用与相邻矢量相对应的运动矢量的矢量信息和当前矢量的先前运动矢量的向量信息来执行预测（S10）。 差分确定单元基于由运动矢量预测单元预测的运动矢量和当前块的实际运动矢量来确定关于当前块的运动矢量的差分信息（S20）。 （附图标记）（AA）开始; （BB）完成; （S10）电流矢量; （S20）当前块

公开(公告)号：KR1020130062972A

公开(公告)日：2013-06-13

申请号：KR1020130060131

申请日：2013-05-28

Applicant: 한국전자통신연구원

Inventor： 최해철 ,  정세윤 ,  조숙희 ,  김휘용 ,  이진호 ,  이하현 ,  임성창 ,  김종호 ,  최진수 ,  홍진우 ,  김진웅

IPC: H04N19/59

CPC classification number: H04N19/52 ,  H04N19/172 ,  H04N19/176 ,  H04N19/513

Abstract: PURPOSE: An encoding/decoding device and a method thereof for predicting an arbitrary motion vector are provided to consider a motion vector of a neighboring vector and a previous motion vector by scaling vector information of a motion vector of a neighboring vector and a previous motion vector. CONSTITUTION: When predicting an arbitrary motion vector in a current block within an image, the prediction is performed by using one or more vector information of a motion vector corresponding to a neighboring vector and vector information of a previous motion vector of a current vector(S10). The motion vector of the current block is calculated by adding a predicted motion vector based on differential information of the current block(S20). [Reference numerals] (AA) Start; (BB) Finish; (S10) Current vector; (S20) Current block

Abstract translation: 目的：提供一种用于预测任意运动矢量的编码/解码装置及其方法，通过缩放相邻矢量和先前运动矢量的运动矢量的矢量信息来考虑相邻矢量和先前运动矢量的运动矢量 。 构成：当预测图像内的当前块中的任意运动矢量时，通过使用与相邻矢量相对应的运动矢量的一个或多个矢量信息和当前矢量的先前运动矢量的矢量信息（S10 ）。 通过根据当前块的差分信息相加预测的运动矢量来计算当前块的运动矢量（S20）。 （附图标记）（AA）开始; （BB）完成; （S10）电流矢量; （S20）当前块

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

Inventor： 최해철 ,  이하현 ,  조숙희 ,  정세윤 ,  임성창 ,  김종호 ,  최진수 ,  홍진우

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

公开(公告)号：KR1020130037188A

公开(公告)日：2013-04-15

申请号：KR1020120110573

申请日：2012-10-05

Applicant: 한국전자통신연구원

Inventor： 이하현 ,  강정원 ,  최진수 ,  김진웅

IPC: H04N19/30 ,  H04N19/105

CPC classification number: H04N19/30 ,  H04N19/82

Abstract: PURPOSE: An image encoding method and an image decoding method are provided to apply filtering or add offset for minimizing errors between a reference restoring sample signal and an original sample signal, thereby reducing a differential signal. CONSTITUTION: An encoding device determines a corresponding sample position of a reference layer(S410). The encoding device determines a restoring sample signal for reference layer units(S420). The encoding device encodes a sample signal of an improved layer unit(S430). [Reference numerals] (S410) Determining a corresponding sample position of a reference layer; (S420) Determining a restoring sample signal for reference layer units; (S430) Encoding a sample signal of an improved layer unit;

Abstract translation: 目的：提供一种图像编码方法和图像解码方法，以应用滤波或增加偏移量来最小化参考恢复采样信号和原始采样信号之间的误差，从而减小差分信号。 构成：编码装置确定参考层的对应采样位置（S410）。 编码装置确定用于参考层单元的恢复采样信号（S420）。 编码装置对改进的层单元的采样信号进行编码（S430）。 （参考号）（S410）确定参考层的相应样本位置; （S420）确定参考层单元的恢复采样信号; （S430）对改进的层单元的采样信号进行编码;

公开(公告)号：KR1020130037162A

公开(公告)日：2013-04-15

申请号：KR1020120099969

申请日：2012-09-10

Applicant: 한국전자통신연구원

Inventor： 이하현 ,  강정원 ,  최진수 ,  김진웅

IPC: H04N19/30 ,  H04N19/85 ,  H04N19/117

CPC classification number: H04N19/30 ,  H04N19/82

Abstract: PURPOSE: A texture prediction method between layers for scalable video coding and a device thereof are provided to differently select a position for finding a reference restoring sample signal of a reference layer, thereby reducing complexity. CONSTITUTION: An encoder obtains a sample position of a reference layer corresponding to a reference sample position of a current encoding object prediction unit of an improved layer(E1). The encoder obtains one or more restoring sample signals among a unit which includes the sample position of the reference layer and surrounding units(E2). The encoder encodes the sample signal of the current encoding object prediction unit of the improved layer by using the reference restoring sample signal of the reference layer(E3). [Reference numerals] (AA) Encoding a sample signal of a current encoding target prediction unit for an input image of an improved layer by referring restoration signal information of a reference layer; (BB) Video coding method and a device thereof including the same; (E1) Step of obtaining a sample position of a reference layer corresponding to a reference sample position of a current encoding object prediction unit of an improved layer; (E2) Step of obtaining one or more restoring sample signals among a unit, which includes the sample position of the reference layer corresponding to the improved layer, and surrounding units; (E3) Step of encoding a sample signal of the current encoding object prediction unit of the improved layer by using the reference restoring sample signal of the reference layer;

Abstract translation: 目的：提供用于可分级视频编码的层之间的纹理预测方法及其装置，以不同地选择用于找到参考层的参考恢复采样信号的位置，从而降低复杂度。 构成：编码器获得与改进层（E1）的当前编码对象预测单元的参考样本位置相对应的参考层的样本位置。 编码器在包括参考层和周围单元（E2）的采样位置的单元中获得一个或多个恢复采样信号。 编码器通过使用参考层（E3）的参考恢复采样信号对改进层的当前编码对象预测单元的采样信号进行编码。 （附图标记）（AA）通过参考参考层的恢复信号信息，对改进层的输入图像的当前编码对象预测单元的采样信号进行编码; （BB）视频编码方法及其装置; （E1）获得与改进层的当前编码对象预测单元的参考样本位置相对应的参考层的样本位置的步骤; （E2）在包括对应于改进层的参考层的采样位置的单元和周围单元之间获得一个或多个恢复采样信号的步骤; （E3）通过使用参考层的参考恢复采样信号对改进层的当前编码对象预测单元的采样信号进行编码的步骤;

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

Inventor： 임성창 ,  김종호 ,  최해철 ,  김휘용 ,  이하현 ,  이진호 ,  정세윤 ,  조숙희 ,  최진수 ,  홍진우 ,  김진웅

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

公开(公告)号：KR1020120100839A

公开(公告)日：2012-09-12

申请号：KR1020120022551

申请日：2012-03-05

Applicant: 한국전자통신연구원

Inventor： 임성창 ,  김휘용 ,  정세윤 ,  김종호 ,  이하현 ,  이진호 ,  최진수 ,  김진웅 ,  심동규 ,  박시내 ,  유은경 ,  오승준 ,  박광훈 ,  조현호

IPC: H04N19/60 ,  H04N19/13 ,  H04N19/103

CPC classification number: H04N19/13 ,  H04N19/103 ,  H04N19/129

Abstract: PURPOSE: An entropy encoding/decoding method is provided to increase the compression efficiency of an image and to efficiency of entropy encoding. CONSTITUTION: An encoding unit scans a coefficient of a residual signal in a low frequency component order. The entropy encoding unit arranges the scanned coefficient(S510). The entropy encoding unit performs Last_coeff encoding of the aligned coefficients(S520). The entropy encoding unit performs explicit run/level mode encoding(S550). The encoding unit performs implicit level mode encoding(S560). [Reference numerals] (AA) Yes; (BB) No; (S510) Scanning; (S520) Encoding Last_coeff; (S530) Determining the number of explicit; (S540) The number of encoding

Abstract translation: 目的：提供熵编码/解码方法，以提高图像的压缩效率和熵编码效率。 构成：编码单元以低频分量顺序扫描残差信号的系数。 熵编码单元布置扫描系数（S510）。 熵编码单元对对齐系数进行Last_coeff编码（S520）。 熵编码单元执行显式的运行/电平模式编码（S550）。 编码单元执行隐式电平模式编码（S560）。 （附图标记）（AA）是; （BB）否 （S510）扫描; （S520）Encoding Last_coeff; （S530）确定显式数; （S540）编码次数<显示次数; （S550）显式运行/级别模式编码; （S560）隐式电平模式编码

公开(公告)号：KR1020120096863A

公开(公告)日：2012-08-31

申请号：KR1020110099305

申请日：2011-09-29

Applicant: 한국전자통신연구원 ,  한국항공대학교산학협력단

Inventor： 김종호 ,  김휘용 ,  임성창 ,  정세윤 ,  이진호 ,  이하현 ,  최진수 ,  김진웅 ,  김재곤 ,  박동일

IPC: H04N19/147 ,  H04N19/30 ,  H04N19/176

CPC classification number: H04N19/147 ,  H04N19/36

Abstract: PURPOSE: A bit rate controlling method for hierarchical coding structure capable of encoding a video of high efficiency is provided to apply a rate-distortion characteristic to a secondary rate-distortion model by using the property of rate-distortion according to a frame type of each time layer in consideration of a hierarchical coding structure. CONSTITUTION: QP(Quantization Parameter) of a first frame and QP of a second frame are determined by using actual generation bit quantity about each frame type of each temporal layer(301). Increase or reduction of CP id determined about QP of the first frame according to a target bit quantity of the second frame within the same time layer.

Abstract translation: 目的：提供一种能够对高效率的视频进行编码的分层编码结构的比特率控制方法，通过使用根据每个帧的帧类型的速率失真特性，对二次速率失真模型应用速率失真特性 考虑到分层编码结构的时间层。 构成：通过使用关于每个时间层（301）的每个帧类型的实际生成位量来确定第一帧的QP（量化参数）和第二帧的QP。 根据同一时间层内的第二帧的目标比特数，增加或减少关于第一帧的QP的CP id。

公开(公告)号：KR1020120088488A

公开(公告)日：2012-08-08

申请号：KR1020110050853

申请日：2011-05-27

Applicant: 한국전자통신연구원

Inventor： 임성창 ,  김휘용 ,  정세윤 ,  조숙희 ,  전동산 ,  김종호 ,  이하현 ,  이진호 ,  최진수 ,  김진웅

IPC: H04N19/51

CPC classification number: H04N19/00733 ,  H04N19/426 ,  H04N19/44 ,  H04N19/513 ,  H04N19/61

Abstract: PURPOSE: A method for storing a temporal motion vector and a device thereof are provided to prevent an increase of the size of a memory access bandwidth when data are stored or brought in or from a corresponding memory. CONSTITUTION: A restored image is filtered in a loop. The resolution of a motion vector is reduced. The dynamic range of the motion vector is restricted. An image and a motion vector are stored in an image buffer or a motion vector buffer. The resolution and the dynamic range of the motion vector are restricted and controlled.

Abstract translation: 目的：提供一种用于存储时间运动矢量的方法及其装置，以防止当存储或携带相应存储器的数据时存储器存取带宽的大小增加。 构成：恢复的图像在循环中进行过滤。 减少运动矢量的分辨率。 运动矢量的动态范围受到限制。 图像和运动矢量存储在图像缓冲器或运动矢量缓冲器中。 运动矢量的分辨率和动态范围受到限制和控制。

公开(公告)号：KR1020120084639A

公开(公告)日：2012-07-30

申请号：KR1020110049246

申请日：2011-05-24

Applicant: 한국전자통신연구원

Inventor： 김종호 ,  김휘용 ,  임성창 ,  이하현 ,  이진호 ,  정세윤 ,  최진수 ,  김진웅 ,  안치득

IPC: H04N19/13

CPC classification number: G06T9/00 ,  H04N19/13 ,  H04N19/146 ,  H04N19/157 ,  H04N19/1887 ,  H04N19/196 ,  H04N19/61 ,  H04N19/91

Abstract: PURPOSE: An adaptive sorting table for entropy coding is provided to reduce complexity due to frequent table updating. CONSTITUTION: Whether a sorting table is updated or not is determined by using the information including symbol value and code number of peripheral blocks. A table index with a high incidence is mapped in a small code number. The sorting table is updated. The updated table is used for the next symbol value.

Abstract translation: 目的：提供一种用于熵编码的自适应排序表，用于降低由于频繁的表更新而引起的复杂性。 构成：是否通过使用包括符号值和外围块的代码号的信息来确定排序表是否更新。 具有高发生率的表索引被映射成小代码。 排序表已更新。 更新的表用于下一个符号值。