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    • 61. 发明授权
    • 멀티미디어 서비스 제공 방법 및 이러한 방법이 구현되는시스템
    • 一种多媒体业务提供方法和实现这种方法的系统
    • KR100908456B1
    • 2009-07-20
    • KR1020070101474
    • 2007-10-09
    • 한국전자통신연구원경희대학교 산학협력단
    • 안신영서덕영조희영박광훈김정래허재두
    • H04N7/00H03M13/25H04L12/70
    • 본 발명은 멀티미디어 서비스 제공 방법 및 이러한 방법이 구현되는 시스템에 관한 것이다. 본 발명은, 비디오 데이터를 계층화하고, 각 계층별로 NAL(Network Adaptation Layer) 유닛을 생성하는 계층 부호화기; 상기 계층 부호화기로부터 제공받은 각 계층의 NAL 유닛에 대하여, FEC(Forword Error Correction) NAL 유닛 또는 FEC 패킷을 생성하는 FEC 부호화기; 가용 비트율 및 패킷 손실률의 조건에 대하여, 상기 FEC 부호화기에 의해 생성된 FEC NAL 유닛 또는 FEC 패킷의 전송 여부를 결정하는 계층간 교차 최적화기; 상기 가용 비트율 및 패킷 손실률을 이용하여, 전송할 패킷을 결정하는 패킷 필터링 모듈; 및 상기 패킷 필터링 모듈에 의해 결정된 패킷을 전송하는 선택적 패킷 전송기를 포함하는 멀티미디어 서비스를 제공하는 시스템을 제공한다.
      FEC, NAL 유닛, 가용 비트율, 패킷 손실률, FEC NAL 유닛, FEC 패킷
    • 提供多媒体服务的方法和系统技术领域本发明涉及一种提供多媒体服务的方法和一种实现该方法的系统。 本发明涉及用于分层视频数据并为每层生成网络适配层(NAL)单元的分层编码器; FEC编码器,用于为从分层编码器提供的每层的NAL单元生成FEC(前向纠错)NAL单元或FEC分组; 层间交叉优化器,用于确定是否为可用比特率和分组丢失率的条件发送由FEC编码器生成的FEC NAL单元或FEC分组; 分组过滤模块,用于使用可用比特率和分组丢失率来确定要发送的分组; 并且可选的分组发送器用于发送由分组过滤模块确定的分组。
    • 62. 发明公开
    • 다시점 비디오 부호화 방법과 그 장치 및 다시점 비디오 복호화 방법과 그 장치
    • 用于多视频视频编码的方法和装置,以及用于多视图视频解码的方法和装置
    • KR1020090076762A
    • 2009-07-13
    • KR1020080087435
    • 2008-09-04
    • 삼성전자주식회사경희대학교 산학협력단
    • 박광훈김규헌박민우박종태서덕영
    • H04N19/597H04N19/103H04N13/00
    • H04N19/44H04N19/597H04N19/70
    • A multi-view video encoding method and an apparatus therefor and a multi-view video decoding method and an apparatus therefor are provided to restore a current block and a current picture by using additional information about the current picture, thereby improving coding performance and efficiency of the entire multi-view video. A block type determiner(110) determines a block type. The block type shows a determination method of a motion vector of a current block within a current picture. The first picture type determiner(120) determines the first picture type. The first picture type shows whether the current picture is a reference picture type for inter prediction. An additional information determiner(130) determines additional information about the current picture. An additional information encoder(140) encodes additional information about the current picture.
    • 提供一种多视点视频编码方法及其装置以及多视点视频解码方法及其装置,用于通过使用关于当前图像的附加信息来恢复当前块和当前图像,从而提高编码性能和效率 整个多视图视频。 块类型确定器(110)确定块类型。 块类型示出当前图像内的当前块的运动矢量的确定方法。 第一图像类型确定器(120)确定第一图像类型。 第一图像类型示出当前图像是否是用于帧间预测的参考图像类型。 附加信息确定器(130)确定关于当前图片的附加信息。 附加信息编码器(140)编码关于当前图片的附加信息。
    • 65. 发明公开
    • 다시점 동영상의 부호화 및 복호화 방법과 그 장치
    • 多视图视频编码和解码方法及其设备
    • KR1020080097914A
    • 2008-11-06
    • KR1020080026315
    • 2008-03-21
    • 삼성전자주식회사경희대학교 산학협력단
    • 박광훈박민우서덕영김규헌
    • H04N19/597H04N13/00H04N19/105
    • H04N19/597H04N19/172H04N19/176
    • A method and an apparatus of encoding and decoding a multi view moving picture are provided to apply a skip block mode to an anchor picture allowing referring only between views when coding the multi view moving picture, thereby improving image quality and coding efficiency. It is determined whether a picture is an anchor picture. When the picture is an anchor picture, a skip block mode is not applied when coding about blocks comprising the picture. Encoding about the block to which the skip block mode is applied is skipped(1040). In case that the picture is an anchor picture, it is determined whether a skip block mode is allowed when encoding the picture. According to the result, the skip block mode is selectively applied during the coding about blocks comprising the picture.
    • 提供了对多视图运动图像进行编码和解码的方法和装置,以便在锚定图像上应用跳过块模式,从而仅允许在对多视图运动图像进行编码时在视图之间进行参考,从而提高图像质量和编码效率。 确定图片是否是锚图片。 当图像是锚图像时,当对包括图像的块进行编码时,不应用跳过块模式。 忽略应用跳过块模式的块的编码(1040)。 在图像是锚图像的情况下,确定当对图像进行编码时是否允许跳过块模式。 根据该结果,在关于包括图像的块的编码期间,有选择地应用跳过块模式。
    • 66. 发明公开
    • 전송 효율을 높이기 위한 다시점 파노라믹 콘텐츠 송/수신시스템 및 그 방법
    • 用于发送/接收多媒体内容以提高传输效率的方法及其方法
    • KR1020080051041A
    • 2008-06-10
    • KR1020070106876
    • 2007-10-23
    • 한국전자통신연구원경희대학교 산학협력단
    • 이인재김규헌최진수박광훈서덕영문경애홍진우
    • H04N21/236H04N21/235H04N13/00
    • H04N21/23614H04N5/23238H04N21/23605H04N21/4343H04N21/4348
    • A system and a method for transmitting and receiving the multi-view point panoramic contents in order to enhance the transmission efficiency are provided to define the multi-view point contents obtained from a camera as each object and to offer only the contents requested by a user at real time. An encoding member(311) encodes the multi-view point panoramic contents. A scene producing member(312) defines the encoded contents as each object descriptor, produces a scene binary format stream and an IOD(Initial Object Descriptor) and produces a scene by means of the corresponding image stream adjacent to the request view point from a user. A packetizer packets the image stream, object descriptor stream, and scene binary format stream from the scene producing member. A multiplexing member(314) multiplexes the packetized image stream, object descriptor stream and scene binary format stream with the IOD produced by the scene producing member and transmits the multiplexed data.
    • 提供了用于发送和接收多视点全景内容以提高传输效率的系统和方法,以将从相机获得的多视点内容定义为每个对象,并且仅提供用户请求的内容 实时。 编码构件(311)对多视点全景内容进行编码。 场景产生构件(312)将编码内容定义为每个对象描述符,产生场景二进制格式流和IOD(初始对象描述符),并且通过与来自用户的请求视点相邻的相应图像流产生场景 。 分组器从场景制作成员分组图像流,对象描述符流和场景二进制格式流。 复用部件(314)将分组化图像流,对象描述符流和场景二进制格式流与由场景生成部件生成的IOD进行复用,并发送复用数据。
    • 68. 发明公开
    • 화질 향상을 위한 사이클릭 미세입자 스케일러빌리티기반에서 플렉서블 매크로 블록 오더링에 의한 코딩방법 및 그 방법을 기록한 기록매체
    • 基于循环微细可扩展性的灵活宏块更新提高视频质量的方法
    • KR1020070009445A
    • 2007-01-18
    • KR1020060065892
    • 2006-07-13
    • 경희대학교 산학협력단
    • 박광훈이경일서덕영
    • H04N19/34H04N19/167
    • H04N19/34H04N19/129H04N19/167H04N19/176
    • A coding method for improving picture quality by using flexible macro block ordering based on cyclic FGS(Fine Granular Scalability) is provided to improve the picture quality of a region of interest by transmitting information of a corresponding image region while varying a recursive scan frequency when the image region is coded by virtual rings and decoding the image region. Initial information including the number of virtual rings representing a region of interest, the thickness of virtual rings represented as an image block, a recursive scan frequency and a start position is confirmed(101). A first virtual ring region to be coded is set by using the start position and the thickness of virtual rings(103). Coefficients of image blocks in the first virtual ring region are coded in a box-out scan order, and the number of remaining virtual rings is changed when the coding is finished(104). The recursive scan frequency is confirmed and the thickness of virtual rings is added to the first virtual ring region so as to set a next virtual ring region to be coded(110). When coding of the entire region of interest is completed, left-over regions are coded.
    • 提供了一种通过使用基于循环FGS(精细粒度可扩展性)的灵活宏块排序来提高图像质量的编码方法,用于通过在对应的图像区域的信息进行变换时改变递归扫描频率来改善感兴趣区域的图像质量, 图像区域由虚拟环编码并对图像区域进行解码。 确定包括表示感兴趣区域的虚拟环的数量,表示为图像块的虚拟环的厚度,递归扫描频率和开始位置的初始信息(101)。 通过使用虚拟环(103)的起始位置和厚度来设定要编码的第一虚拟环形区域。 第一虚拟环区域中的图像块的系数以盒外扫描顺序被编码,并且当编码完成时,剩余虚拟环的数量被改变(104)。 确认递归扫描频率,并将虚拟环的厚度添加到第一虚拟环区域,以便设置要被编码的下一虚拟环区域(110)。 当完成感兴趣的整个区域的编码时,对剩余区进行编码。