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公开(公告)号：KR1020130098121A
公开(公告)日：2013-09-04
申请号：KR1020120106262
申请日：2012-09-25
Applicant: 세종대학교산학협력단
CPC classification number: H04N19/80 , H04N19/174 , H04N19/176 , H04N19/523
Abstract: PURPOSE: An image encoding and decoding device using an adaptive interpolation filter and an image encoding and decoding method are provided to improve overall image encoding efficiency by configuring an interpolation filter according to a category separating an input image or a coding block according to a predetermined attribute. CONSTITUTION: An image analyzer (401) analyzes an image attribute for an input image by coding block and separates a coding block into two or more categories based on the image attribute. A filter setting device (410) calculates interpolation filter index information including at least one among whether to apply an interpolation filter, the kind of the interpolation filter or the information of the number of the interpolation filter by referencing the category of the coding block. [Reference numerals] (401) Image analyzer; (405) Color format converter; (410) Filter setting device; (420) Filter information encoder; (AA,BB) Input image; (CC) Category; (DD) Interpolation filter index information; (EE) Encoded interpolation filter index information
Abstract translation: 目的：提供一种使用自适应内插滤波器和图像编码和解码方法的图像编码和解码装置，以通过根据预定属性分离输入图像或编码块的类别来配置内插滤波器来提高整体图像编码效率 。 构成：图像分析器（401）通过编码块分析输入图像的图像属性，并且基于图像属性将编码块分离成两个或更多个类别。 滤波器设定装置（410）通过参照编码块的种类，计算插值滤波器索引信息，该内插滤波器索引信息包括是否应用内插滤波器，内插滤波器的种类或插值滤波器的数量的信息中的至少一个。 （附图标记）（401）图像分析仪; （405）彩色格式转换器; （410）过滤器设定装置; （420）滤波器信息编码器; （AA，BB）输入图像; （CC）类别; （DD）插值滤波器索引信息; （EE）编码插值滤波器索引信息
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公开(公告)号：KR1020130097958A
公开(公告)日：2013-09-04
申请号：KR1020120019664
申请日：2012-02-27
Applicant: 세종대학교산학협력단
IPC: H04N19/50
Abstract: PURPOSE: A movement information encoding/decoding device and a method thereof are provided to determine the resolution of a motion vector about a current block by using a plurality of prediction motion vectors and to improve encoding efficiency by encoding information determined according to the resolution. CONSTITUTION: A motion vector resolution determiner (210) determines the resolution of a motion vector about a current block by using a plurality of prediction motion vectors generated in each current block. A distance measurement unit (212) measures a distance value between one or more motion vectors by using the prediction motion vectors. A distance selecting unit (214) selects one of distance value groups based on a specific standard. A motion vector encoding unit (220) outputs motion information encoding data by using information received from the motion vector resolution determiner. [Reference numerals] (212) Distance measurement unit; (214) Distance selecting unit; (220) Motion vector encoding unit; (AA) Projected motion vector; (BB) Motion information encoding data
Abstract translation: 目的：提供一种移动信息编码/解码装置及其方法，通过使用多个预测运动矢量来确定关于当前块的运动矢量的分辨率，并通过根据分辨率确定的编码信息提高编码效率。 构成：运动矢量分辨率确定器（210）通过使用在每个当前块中产生的多个预测运动矢量来确定关于当前块的运动矢量的分辨率。 距离测量单元（212）通过使用预测运动矢量来测量一个或多个运动矢量之间的距离值。 距离选择单元（214）基于特定标准选择距离值组中的一个。 运动矢量编码单元（220）通过使用从运动矢量分辨率确定器接收的信息输出运动信息编码数据。 （附图标记）（212）距离测量单元; （214）距离选择单元; （220）运动矢量编码单元; （AA）投影运动矢量; （BB）运动信息编码数据
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公开(公告)号：KR1020090037578A
公开(公告)日：2009-04-16
申请号：KR1020070102961
申请日：2007-10-12
Applicant: 세종대학교산학협력단 , 한국전자통신연구원
IPC: H04N19/103 , H04N19/51
CPC classification number: H04N19/11 , H04N19/122 , H04N19/176
Abstract: An apparatus and a method for encoding and decoding image data are provided to keep a high quality image when encoding and decoding an image by diversifying prediction direction. An H.264 / AVC image encoder encodes I and SI macroblocks by using a prediction method inside a screen. A prediction block is used as reference data when encoding and decoding. A diagonal left down direction and a diagonal right down direction are separated by the first angle clockwise and counterclockwise respectively with regard to a vertical direction. A horizontal downward direction and a horizontal upward direction are separated by the second angle clockwise and counterclockwise respectively with regard to a horizontal direction. An prediction mode calculating unit calculates a prediction value of a prediction block with regard to a prediction mode corresponding to each of prediction directions. A prediction mode determining unit determines a prediction mode in which a calculated cost function is minimum as the optimum prediction mode.
Abstract translation: 提供了一种用于对图像数据进行编码和解码的装置和方法，以通过使预测方向多样化来对图像进行编码和解码时保持高质量的图像。 H.264 / AVC图像编码器通过使用屏幕内的预测方法对I和SI宏块进行编码。 当编码和解码时，预测块用作参考数据。 对角线左下方向和对角线右下方向分别相对于垂直方向分别顺时针和逆时针分开第一角度。 水平向下方向和水平向上方向分别相对于水平方向分别顺时针和逆时针分开第二角度。 预测模式计算单元针对与每个预测方向相对应的预测模式来计算预测块的预测值。 预测模式确定单元确定计算出的成本函数最小的预测模式作为最佳预测模式。
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公开(公告)号：KR100672958B1
公开(公告)日：2007-01-22
申请号：KR1020040060034
申请日：2004-07-30
Applicant: 세종대학교산학협력단
Inventor： 한종기
IPC: H04N19/40 , H04N19/132
Abstract: 트랜스코딩 시스템 및 방법이 개시된다. 디코딩부는 제1비트스트림을 복호하여 픽셀도메인의 제1영상데이터를 출력한다. 해상도 변환부는 제1영상데이터를 구성하는 매크로블록에 대해 결정된 해상도 변환인자들에 의해 큐빅 컨볼루션을 수행하여 해상도가 변환된 제2영상데이터를 출력한다. 또한, 해상도 변환부는 소정의 초기값으로 설정된 제1해상도 변환인자들에 의해 제1영상데이터를 구성하는 매크로블록에 대한 축소영상을 생성한 후 축소영상을 확대한 재건영상을 생성하고, 제1해상도 변환인자들과 각각의 제1해상도 변환인자에 대응하는 제1해상도 변환인자들의 변화량을 합산하여 제2해상도 변환인자를 산출하는 과정을 반복적으로 수행하여, 재건영상과 제1영상데이터의 대응되는 매크로블록의 차이가 소정의 임계값보다 작게 되는 시점의 해상도 변환인자를 최적의 해상도 변환인자로 결정한다. 인코딩부는 제2영상데이터를 가변장부호화하여 제2비트스트림을 출력한다. 본 발명에 따르면, 트랜스코더의 움직임 예측과 해상도 변환을 통해 발생하는 손실을 양쪽 모두에서 감소시킬 수 있다.
트랜스코딩, 해상도 변환, 움직임 예측, 큐빅 컨볼루션, 매크로블록-
公开(公告)号：KR101652072B1
公开(公告)日：2016-08-29
申请号：KR1020140151192
申请日：2014-11-03
Applicant: 세종대학교산학협력단
IPC: H04N19/51 , H04N19/30 , H04N19/105 , H04N19/176 , H04N19/159
Abstract: 본발명에따른멀티레이어비디오의움직임정보탐색방법은인핸스먼트레이어의현재블록에대응하는베이스레이어의참조블록의부호화정보를이용하여베이스레이어의제1 특징값을산출하고, 제1 특징값에기초하여인핸스먼트레이어의현재블록의움직임벡터초기값을획득하며, 현재블록의움직임벡터초기값에기초하여현재블록의움직임벡터를추정하는것을특징으로한다.
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Patent Agency Ranking
公开(公告)号：KR1020150135637A
公开(公告)日：2015-12-03
申请号：KR1020140061882
申请日：2014-05-22
Applicant: 주식회사 칩스앤미디어 , 세종대학교산학협력단
IPC: H04N19/00
CPC classification number: H04N19/59 , H04N19/124 , H04N19/176 , H04N19/182
Abstract: 본발명의실시예에따른영상신호의해상도변환장치는, 복호화된영상신호를수신하는입력부; 상기영상신호의복호화과정에서산출되는유닛별특징정보를획득하고, 상기유닛별특징정보에따른스케일링파라미터를포함하는룩업테이블을생성하는룩업테이블생성부; 상기룩업테이블을이용하여상기유닛별스케일링파라미터를획득하고, 상기스케일링파라미터에따라상기복호화된영상신호에대한스케일링을수행하는적어도하나의스케일러; 및상기스케일링수행에따라해상도변환된영상을출력하는출력부를포함한다.
Abstract translation: 根据本发明的实施例，用于转换图像信号的分辨率的装置包括：用于接收解码图像信号的输入单元; 查找表生成单元，用于从图像信号的解码处理中获取每个单元的特征信息，并且根据每个单元的特征信息生成包括缩放参数的查找表; 一个或多个缩放器，用于通过使用查找表获得每个单元的缩放参数，以及根据缩放参数对解码的图像信号进行缩放; 以及输出单元，用于输出其分辨率随着缩放而被改变的图像。
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公开(公告)号：KR1020140097997A
公开(公告)日：2014-08-07
申请号：KR1020140009680
申请日：2014-01-27
Applicant: 세종대학교산학협력단
IPC: H04N19/50 , H04N19/107
CPC classification number: H04N19/513 , H04N19/103 , H04N19/105 , H04N19/176
Abstract: Disclosed are a device and a method for encoding/decoding prediction motion vector used to encode a motion vector generated for each current block of an image. A method of predicting motion includes: generating candidates of at least one prediction motion vector using motion vectors of spatial neighboring blocks of a current block or motion vectors of temporal neighboring blocks of the current block; and selecting prediction motion vectors from candidates of at least one prediction motion vector.
Abstract translation: 公开了一种用于对预测运动矢量进行编码/解码的装置和方法，用于编码为图像的每个当前块生成的运动矢量。 一种预测运动的方法包括：使用当前块的空间相邻块的运动矢量或当前块的时间相邻块的运动矢量产生至少一个预测运动矢量的候选; 以及从至少一个预测运动矢量的候选中选择预测运动矢量。
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公开(公告)号：KR101337344B1
公开(公告)日：2013-12-06
申请号：KR1020130020797
申请日：2013-02-27
Applicant: 세종대학교산학협력단
IPC: H04N19/00
CPC classification number: H04N19/124 , H04L45/745 , H04N19/109 , H04N19/11 , H04N19/117 , H04N19/12 , H04N19/132 , H04N19/136 , H04N19/14 , H04N19/159 , H04N19/17 , H04N19/176 , H04N19/597 , H04N19/61 , H04N19/82
Abstract: 본 발명에 따른 적응적 방식이 적용된 영상 부호화 장치는 인터 예측기, 인트라 예측기, 변환기, 양자화기, 역 양자화기 및 역 변환기를 포함하되, 입력 영상이 미리 설정된 속성에 따라 2 이상의 상이한 카테고리로 구분되고, 위 인터 예측기, 인트라 예측기, 변환기, 양자화기, 역 양자화기 및 역 변환기는 입력 영상의 카테고리에 따라 서로 상이한 방식으로 각각의 동작을 수행하는 2 이상의 모듈을 포함하여 구성됨으로써, 일괄적인 방식이 적용되던 종래의 영상 부호화 장치보다 중요한 정보 손실없이 영상을 효율적으로 부호화할 수 있다는 장점이 있다.
Abstract translation: 根据本发明，将自适应方案应用于包括预测器，预测器内部，变压器，量化器，逆量化器和逆变换器的图像编码装置，其中输入图像被分类为两个 或更多不同的类别，并且实现预测器间，预测器内，变压器，量化器和逆量化器中的两个或更多个模块，以根据输入图像的类别在不同的方案中执行相应的操作 所属。 因此，与采用封装方案的传统图像编码装置相比，本发明具有有效编码图像而不会丢失重要信息的优点。
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公开(公告)号：KR100824347B1
公开(公告)日：2008-04-22
申请号：KR1020060108772
申请日：2006-11-06
Applicant: 세종대학교산학협력단
IPC: H04N19/51
CPC classification number: H04N19/513 , H04N19/176 , H04N19/573
Abstract: An apparatus and a method for encoding and decoding multi videos are provided to encode the multi videos at an encoding rate higher than an existing multi video encoder, thereby reducing transmission time and transmission bandwidth for transmission of image data. A motion estimator(310) estimates a motion vector for an encoded MB(Macro Block) belonging to an encoded image frame of first image. A motion compensator(320) generates a prediction signal by detecting a reference MB corresponding to a current MB belonging to a current image frame from a reference image frame adjacent to the current image frame based on the estimated motion vector. A difference value calculator(330) calculates a difference value between the current MB and the prediction signal. An image frame selector(340) determines a reference image frame, as an image frame located at the same time axis as the encoded image frame among the encoded image frame and the second frame, as the current image frame and selectively provides the determined frame to the motion compensator. A redundancy removing signal generator(350) generates a redundancy removing signal by calculating difference between a first difference value calculated in correspondence with the encoded image frame and a second difference value calculated in correspondence with the reference image frame.
Abstract translation: 提供了一种用于对多视频进行编码和解码的装置和方法，以高于现有多视频编码器的编码速率对多视频进行编码，从而减少了传输图像数据的传输时间和传输带宽。 运动估计器（310）估计属于第一图像的编码图像帧的编码MB（宏块）的运动矢量。 运动补偿器（320）通过基于估计的运动矢量从与当前图像帧相邻的参考图像帧检测属于当前图像帧的当前MB的参考MB来生成预测信号。 差值计算器（330）计算当前MB与预测信号之间的差值。 图像帧选择器（340）将参考图像帧确定为与编码图像帧和第二帧中的编码图像帧位于同一时间轴的图像帧作为当前图像帧，并且选择性地将确定的帧提供给 运动补偿器。 冗余消除信号发生器（350）通过计算与编码图像帧对应地计算出的第一差分值与根据参考图像帧计算出的第二差分值之间的差来产生冗余去除信号。
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公开(公告)号：KR100672959B1
公开(公告)日：2007-01-24
申请号：KR1020050070679
申请日：2005-08-02
Applicant: 세종대학교산학협력단
IPC: H04N19/51
CPC classification number: H04N19/517 , H04N19/176 , H04N19/42
Abstract: A fast video encoding apparatus and a method thereof are provided to omit a process of calculating an unnecessary motion vector by determining a compression mode before a motion vector is calculated to reduce the quantity of calculations and time required for calculations. A fast video encoding apparatus includes a sum calculator(300), a controller(310), a motion vector calculator(320), and an output unit(330). The sum calculator calculates a first sum value corresponding to the sum of pixel values of a predetermined to-be-compressed object unit region of object video information to be compressed and a second sum value corresponding to the sum of pixel values of a predetermined compression reference unit region of reference video information. The controller outputs a motion vector calculation signal when the difference between the first sum value and the second sum value is greater than a predetermined threshold value. The motion vector calculator calculates a motion vector with respect to the to-be-compressed object unit region when receiving the motion vector calculation signal from the controller. The output unit outputs the motion vector received from the motion vector calculator.
Abstract translation: 提供一种快速视频编码装置及其方法，以省略通过在计算运动矢量之前确定压缩模式来计算不必要的运动矢量的过程，以减少计算量和计算所需的时间。 快速视频编码装置包括和计算器（300），控制器（310），运动矢量计算器（320）和输出单元（330）。 和计算器计算与要压缩的对象视频信息的预定待压缩对象单位区域的像素值的和相对应的第一和值，以及对应于预定压缩参考的像素值的和的第二和值 单位区域参考视频信息。 当第一和值和第二和值之间的差大于预定阈值时，控制器输出运动矢量计算信号。 当从控制器接收运动矢量计算信号时，运动矢量计算器计算关于被压缩对象单位区域的运动矢量。 输出单元输出从运动矢量计算器接收的运动矢量。
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