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    • 5. 发明申请
    • SCALABLE VIDEO ENCODING AND DECODING METHOD USING SWITCHING PICTURES AND APPARATUS THEREOF
    • 使用切换图像的可扩展视频编码和解码方法及其设备
    • WO2007111473A1
    • 2007-10-04
    • PCT/KR2007/001505
    • 2007-03-27
    • ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTECHOI, Hae-ChulKIM, Jae-GonHONG, Jin-WooKIM, Hae-KwangJIA, Jie
    • CHOI, Hae-ChulKIM, Jae-GonHONG, Jin-WooKIM, Hae-KwangJIA, Jie
    • H04N7/24
    • H04N21/4345H04N19/30H04N19/70
    • A conventional new video coding technology can provide a bitstream switching picture by encoding the bitstream switching picture into an I picture. However, an encoding efficiency is greatly reduced. As such, the new video coding technology does not provide an efficient bitstream switching function. Also, other advantages provided by a switching picture technology such as a random access, error durability, and a bitstream splicing are not provided. Provided is an apparatus for encoding a video bitstream including a base layer bitstream and an enhancement layer bitstream by encoding an enhancement layer picture of the enhancement layer bitstream, which is reproduced immediately after a base layer picture of the base layer bitstream is reproduced, into a non-switching pictures by interlayer prediction using a reference image generated by decoding a pre-encoded base layer picture or by motion prediction using another reference image generated by decoding a pre-encoded enhancement layer picture, and into a switching picture, which is decoded into the same image as the non-switching picture, by an interlayer prediction using the non-switching picture and a reference image generated by decoding a pre-encoded base layer picture, while the base layer picture is being reproduced.
    • 常规的新的视频编码技术可以通过将比特流切换图像编码为I图像来提供比特流切换图像。 然而,编码效率大大降低。 因此,新的视频编码技术不能提供有效的比特流切换功能。 此外,不提供由诸如随机存取,错误耐久性和比特流拼接之类的切换图像技术提供的其他优点。 提供了一种用于通过对在再现基层比特流的基本层图像之后立即再现的增强层比特流的增强层图像进行编码来对包括基本层比特流和增强层比特流的视频比特流进行编码的装置, 通过使用通过对预编码的基本层图像进行解码而生成的参考图像的帧间预测的非切换图像,或者使用通过对预编码的增强层图像进行解码而生成的另一参考图像的运动预测,并将其解码为 与非切换图像相同的图像,通过使用非切换图像的层间预测和通过对预编码的基底图像进行解码而生成的参考图像,同时基本层图像被再现。
    • 6. 发明申请
    • METHOD DEFINING NAL UNIT TYPE AND SYSTEM OF TRANSMISSION BITSTREAM AND REDUNDANT SLICE CODING
    • 方法定义了单位类型和传输系统和冗余码片编码
    • WO2007081150A1
    • 2007-07-19
    • PCT/KR2007/000169
    • 2007-01-09
    • ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTECHOI, Hae-ChulKIM, Jae-GonHONG, Jin-WooKIM, Hae-KwangJIA, Jie
    • CHOI, Hae-ChulKIM, Jae-GonHONG, Jin-WooKIM, Hae-KwangJIA, Jie
    • H04N7/64
    • H04N19/89H04N19/174H04N19/65H04N19/70
    • With current H.264/AVC, scalable video coding (SVC), and multi-view coding (MVC), a redundant coded slice can be identified by parsing a slice header. However, the parsing of the slice header aggravates the burden on a processor and increases costs. A NAL unit type is used to indicate a redundant coded picture when H.264/AVC, SVC, or MVC does not use a data partition and a NAL unit to be transmitted is the redundant coded picture. A bitstream transmitting apparatus includes: a header parser parsing a header of a NAL unit of a coded bitstream including the header of the NAL unit on which a NAL unit type indicating a redundant coded picture is recorded and determining if the NAL unit is the redundant coded picture; and a transmission determiner, if the header parser determines that the NAL unit is the redundant coded picture, determining whether to transmit the NAL unit to a network according to the status of the network, thereby easily and simply transmitting or dropping the redundant coded slice without parsing a slice header when the bitstream is decoded.
    • 利用目前的H.264 / AVC,可缩放视频编码(SVC)和多视图编码(MVC),可以通过解析片头来识别冗余编码片。 然而,分片标题的解析加重了处理器的负担并且增加了成本。 当H.264 / AVC,SVC或MVC不使用数据分区并且要发送的NAL单元是冗余编码图像时,NAL单元类型用于指示冗余编码图像。 比特流发送装置包括:头部解析器,解析编码比特流的NAL单元的头部,该编码比特流的头部记录有表示冗余编码图像的NAL单元类型的NAL单元的头部,并且确定NAL单元是否为冗余编码 图片; 以及发送确定器,如果头部解析器确定NAL单元是冗余编码图像,则根据网络的状态确定是否将NAL单元发送到网络,从而容易且简单地发送或丢弃冗余编码切片而不 当比特流被解码时解析片头。