公开(公告)号：KR101307469B1

公开(公告)日：2013-09-12

申请号：KR1020120056604

申请日：2012-05-29

Applicant: 서울대학교산학협력단

Inventor： 이상욱 ,  박상욱

IPC: H04N19/00 ,  H04N19/60 ,  H04N19/59

CPC classification number: H04N19/395 ,  H04N19/124 ,  H04N19/159 ,  H04N19/513 ,  H04N19/567 ,  H04N19/625

Abstract: PURPOSE: A video encoder, a video decoder, a video encoding method, and a video decoding method perform a video decoding by distinguishing a reliable channel. CONSTITUTION: A first encoding unit (100) outputs a generated syndrome bit by channel-encoding a DC conversion factor of a first frame of a video sequence. The first encoding unit selectively channel-encodes the quantized AC conversion factor of the first frame according to channel information between a video encoder and a video decoder. A second encoding unit (200) intra-encodes the key frame of the video sequence. A frame controller (300) outputs the first frame to the second encoding unit or outputs the first frame to the first encoding unit according to the channel information. [Reference numerals] (100) First encoding unit; (230) Channel coating unit; (240) Rate control unit; (400) First decoding unit; (510) Auxiliary information generating unit; (520) Auxiliary information reforming unit; (610) Distortion measuring unit; (620) Channel determining unit; (630) Channel modeling unit; (700) Channel decoding unit; (AA) Channel information; (BB) Video encoder; (CC) Initial rate information; (DD) AC syndrome; (EE) DC syndrome; (FF) Feedback channel; (GG) Video decoder

Abstract translation: 目的：视频编码器，视频解码器，视频编码方法和视频解码方法通过区分可靠的信道进行视频解码。 构成：第一编码单元（100）通过对视频序列的第一帧的DC转换因子进行信道编码来输出生成的校正子位。 第一编码单元根据视频编码器和视频解码器之间的信道信息选择性地对第一帧的量化AC转换因子进行信道编码。 第二编码单元（200）对视频序列的关键帧进行编码。 帧控制器（300）将第一帧输出到第二编码单元，或者根据频道信息将第一帧输出到第一编码单元。 （附图标记）（100）第一编码单元; （230）通道涂装单元; （240）速率控制单元; （400）第一解码单元; （510）辅助信息生成单元; （520）辅助信息重整单元; （610）失真测量单元; （620）信道确定单元; （630）信道建模单元; （700）信道解码单元; （AA）频道信息; （BB）视频编码器; （CC）初始费率信息; （DD）AC综合征; （EE）DC综合征; （FF）反馈通道; （GG）视频解码器

公开(公告)号：KR1020100093703A

公开(公告)日：2010-08-26

申请号：KR1020090012759

申请日：2009-02-17

Applicant: 한국전자통신연구원 ,  서울대학교산학협력단

Inventor： 강정원 ,  이경준 ,  신일홍 ,  유정주 ,  홍진우 ,  박상욱 ,  최진우 ,  김창수 ,  이상욱

IPC: H04N7/24

CPC classification number: H04N19/395 ,  H04N19/105 ,  H04N19/51 ,  H04N19/577 ,  H04N19/587

Abstract: PURPOSE: An encoder and a decoder for distributing an image through symmetrical motion prediction and a channel division and a method thereof are provided to minimize distortion of side information and remove residual part existing in a channel code decoding process, thereby reducing calculation amount. CONSTITUTION: A key frame encoder(110) encodes the key frame of a image. As a response of the encoded image, a buffer receives a first channel image information of large distortion larger than preset value. A first channel image is divided from a side image information applying interpolation to the key frame. A quantization unit(130) quantizes a Wyner-Ziv frame through the first channel image information. A Wyner-Ziv frame encoder(140) encodes the quantized Wyner-Ziv frame.

Abstract translation: 目的：提供一种用于通过对称运动预测和信道划分来分配图像的编码器和解码器及其方法，以最小化侧信息的失真并消除存在于信道码解码过程中的残留部分，从而减少计算量。 构成：关键帧编码器（110）对图像的关键帧进行编码。 作为编码图像的响应，缓冲器接收大于预设值的大失真的第一通道图像信息。 将第一频道图像从应用插值的侧边图像信息划分到关键帧。 量化单元（130）通过第一通道图像信息量化Wyner-Ziv帧。 Wyner-Ziv帧编码器（140）对量化的Wyner-Ziv帧进行编码。