公开(公告)号：KR100454501B1

公开(公告)日：2004-10-28

申请号：KR1020010085034

申请日：2001-12-26

Applicant: 한국전자통신연구원 ,  브이케이 주식회사

Inventor： 서기범 ,  구본태 ,  박성모 ,  김성민 ,  김익균 ,  김경수

IPC: H04N19/59

CPC classification number: H04N19/423 ,  H04N19/105 ,  H04N19/14 ,  H04N19/42 ,  H04N19/593 ,  H04N19/61 ,  H04N19/63

Abstract: A hardware structure for adaptively prediction coding an image signal using spatial correlation and a method therefor are provided. The prediction coding apparatus has a packet change detection unit which determines whether or not blocks used to determine a prediction direction for a current block for which prediction is currently performed is included in a same packet to which the current block belongs; a prediction reference value providing unit which provides a prediction reference value used in prediction according to the result of determination by the packet change detection unit; and a prediction calculation unit which outputs a predictive coded value or a predictive decoded value using the prediction reference value provided by the prediction reference value providing unit and the DCT component of the current block according to an operation mode. According to the apparatus and method, the size of a prediction apparatus is reduced, and one apparatus is used both in coding and decoding.

Abstract translation: 提供了一种用于使用空间相关性自适应预测编码图像信号的硬件结构及其方法。 预测编码设备具有分组改变检测单元，该分组改变检测单元确定用于确定当前执行预测的当前块的预测方向的块是否被包括在当前块所属的相同分组中; 预测参考值提供单元，其根据分组变化检测单元的确定结果提供预测中使用的预测参考值; 以及预测计算单元，其根据操作模式使用由预测参考值提供单元提供的预测参考值和当前块的DCT分量输出预测编码值或预测解码值。 根据该装置和方法，减小了预测装置的尺寸，并且在编码和解码中都使用了一个装置。

公开(公告)号：KR1020030055479A

公开(公告)日：2003-07-04

申请号：KR1020010085034

申请日：2001-12-26

Applicant: 한국전자통신연구원 ,  브이케이 주식회사

Inventor： 서기범 ,  구본태 ,  박성모 ,  김성민 ,  김익균 ,  김경수

IPC: H04N19/59

CPC classification number: H04N19/423 ,  H04N19/105 ,  H04N19/14 ,  H04N19/42 ,  H04N19/593 ,  H04N19/61 ,  H04N19/63 ,  H04N19/176 ,  H04N19/186 ,  H04N19/426 ,  H04N19/625

Abstract: PURPOSE: A predicting system and method for encoding or decoding a video signal are provided to reduce the volume of the predicting system and use one system for both of encoding and decoding processes. CONSTITUTION: A predicting system for encoding or decoding a video signal includes a packet variation detector(410), a prediction basic value provider(420), and a prediction calculator(430). The packet variation detector judges whether or not a prediction basic value used for prediction of a block for which prediction is currently performed belongs to the same packet as the current block. The prediction basic value provider provides the prediction basic value. The prediction calculator outputs a prediction encoding value or prediction decoding value using the prediction basic value provided by the prediction basic value provider and a discrete cosine transform coefficient of the current block according to an operation mode.

Abstract translation: 目的：提供一种用于编码或解码视频信号的预测系统和方法，以减少预测系统的体积，并为编码和解码过程使用一个系统。 构成：用于编码或解码视频信号的预测系统包括分组变化检测器（410），预测基本值提供器（420）和预测计算器（430）。 分组改变检测器判断用于预测当前执行的预测的块的预测基准值是否属于与当前块相同的分组。 预测基本价值提供者提供预测基本价值。 预测计算器使用由预测基本值提供者提供的预测基本值和根据操作模式的当前块的离散余弦变换系数输出预测编码值或预测解码值。

公开(公告)号：KR100928701B1

公开(公告)日：2009-11-27

申请号：KR1020070132721

申请日：2007-12-17

Applicant: 한국전자통신연구원

Inventor： 이석호 ,  신경선 ,  한진호 ,  김익균 ,  박성모 ,  엄낙웅 ,  서기범

IPC: H04N19/43 ,  H04N19/51 ,  H04N19/61

Abstract: An intra prediction coding acceleration method and a device thereof are provided to accelerate an intra prediction coding process by using a fast mode decision method for intra prediction. An intra prediction mode unit calculates an intra prediction mode according to neighboring block data of a block for performing intra prediction. A DCT(Discrete Cosine Transform) converter converts the calculated intra prediction mode value through a DCT process. An SAE(Sum of Absolute Error) calculator(600) calculates an SAE value according to the DCT value. A quantizer quantizes the DCT-applied value. An output multiplexer determines an optimum quantized intra mode by using the SAE calculated value and the quantized value.

Abstract translation: 提供帧内预测编码加速方法及其装置，以通过使用用于帧内预测的快速模式判定方法来加速帧内预测编码处理。 帧内预测模式单元根据用于执行帧内预测的块的相邻块数据来计算帧内预测模式。 DCT（离散余弦变换）转换器通过DCT处理将计算的帧内预测模式值转换。 SAE（绝对误差和）计算器（600）根据DCT值计算SAE值。 量化器量化DCT应用的值。 输出多路复用器通过使用SAE计算值和量化值来确定最佳量化帧内模式。

公开(公告)号：KR1020090065243A

公开(公告)日：2009-06-22

申请号：KR1020070132721

申请日：2007-12-17

Applicant: 한국전자통신연구원

Inventor： 이석호 ,  신경선 ,  한진호 ,  김익균 ,  박성모 ,  엄낙웅 ,  서기범

IPC: H04N19/43 ,  H04N19/51 ,  H04N19/61

CPC classification number: H04N19/159 ,  H04N19/103 ,  H04N19/124 ,  H04N19/625

Abstract: An intra prediction coding acceleration method and a device thereof are provided to accelerate an intra prediction coding process by using a fast mode decision method for intra prediction. An intra prediction mode unit calculates an intra prediction mode according to neighboring block data of a block for performing intra prediction. A DCT(Discrete Cosine Transform) converter converts the calculated intra prediction mode value through a DCT process. An SAE(Sum of Absolute Error) calculator(600) calculates an SAE value according to the DCT value. A quantizer quantizes the DCT-applied value. An output multiplexer determines an optimum quantized intra mode by using the SAE calculated value and the quantized value.

Abstract translation: 提供帧内预测编码加速方法及其装置，以通过使用用于帧内预测的快速模式判定方法来加速帧内预测编码处理。 帧内预测模式单元根据用于执行帧内预测的块的相邻块数据来计算帧内预测模式。 DCT（离散余弦变换）转换器通过DCT处理转换计算出的帧内预测模式值。 SAE（绝对误差和）计算器（600）根据DCT值计算SAE值。 量化器量化DCT应用值。 输出多路复用器通过使用SAE计算值和量化值来确定最佳量化帧内模式。