Abstract:
PURPOSE: A video encoding apparatus, capable of facilitating the conversion and transmission of processed video information is provided to integrately process video information to existing two-dimensional terminals and a tangible terminal in ubiquitous environment. CONSTITUTION: An acquisition unit(310) acquires a plurality of video images of the different viewpoints. An encoding unit(320) applies multi-viewpoint video coding to one of multi-viewpoint video images. The encoding unit applies scalable video coding to a plurality of viewpoints. An output unit(330) generates output bit-stream by the combination of itstreams by viewpoint and layer of the encoder.
Abstract:
디블록킹 필터링을 포함하는 코덱 사이의 트랜스코딩 방법 및 장치를 개시한다. 본 발명의 일 실시예에 따른 트랜스코딩 방법은 각각 디블록킹 필터링 단계를 포함하는 제1 코덱과 제2 코덱 사이의 트랜스코딩 방법으로써, 제1 코덱에 따라 인코딩된 입력 데이터를 제1 코덱에 따라 디코딩하는 제1 과정과 제1 과정에서 디코딩된 데이터를 제2 코덱에 따라 인코딩하는 제2 과정을 포함한다. 그리고 제2 과정으로 입력되는 디코딩된 데이터는, 제1 과정에서 제1 코덱의 디블록킹 필터링 단계가 수행되지 않거나 또는 제1 과정에서 제1 코덱의 디블록킹 필터링 단계가 적응적으로 수행된 데이터일 수 있으며, 또한 제1 과정에서 제1 코덱의 디블록킹 필터링 단계가 수행된 데이터를 추가로 더 포함할 수 있다. 그리고 제2 과정으로 입력되는 디코딩된 데이터는 제2 코덱의 인코딩 단계 및/또는 움직임 예측 단계를 위한 입력으로 사용될 수 있다. 트랜스코딩, MPEG, H264/AVC, 디블록킹 필터
Abstract:
PURPOSE: A method and an apparatus for coding a depth map using bit-plane coding are provided to respectively code each bit-plane after dividing a depth map by a bit-plane unit. CONSTITUTION: Each pixel of a depth map is converted into a gray code. The converted depth map is classified by a bit-plane unit. Each bit-plane is coded. A bit rate is controlled when coding the depth map. A bit plane coding unit outputs information which codes each bit-plane by a bit stream. A bit rate control unit selects a bit-plane for coding or selects a smaller area than the bit-plane.
Abstract:
A multi-view video encoding method using color difference compensation for determining a color difference compensation value about a current block of a first picture type and an apparatus thereof are provided to encode and decode multiview video by performing color difference compensation about the current block. A first picture type reader(210) reads a first picture type in which picture shows whether it is the standards picture type for the inter prediction. A block type reader(220) reads the block type showing a determination method of a motion vector of the current block. A color difference compensation value reader(230) reads the color difference compensation value about the current block based on a first picture type and block type. A color difference compensation performer performs the color difference compensation about the current block.
Abstract:
A method and an apparatus for obtaining a brightness compensation prediction value and a brightness compensation flag value in a brightness compensation process during multi view coding are provided to estimate the brightness compensation prediction value and the brightness compensation flag value more effectively, thereby improving coding efficiency. When a current block performing brightness compensation is in a skip mode, a brightness compensation prediction value is obtained by using information of blocks adjacent to the current block(1010). When the obtained brightness compensation prediction value is 0, it is set that the brightness compensation of the current block is not performed(1030). When the brightness compensation prediction value is not 0, it is set that the brightness compensation of the current block is performed(1040).
Abstract:
A method and an apparatus for inducing a brightness compensation prediction value and a brightness compensation flag value in a brightness compensation process during multi view video coding are provided to predict a flag prediction value which indicates whether brightness compensation is performed during multi view coding and the brightness compensation prediction value more effectively, thereby improving coding efficiency. A brightness compensation prediction value is induced by using information of blocks adjacent to a current block when the current block for performing brightness compensation is in a B skip mode(510). When the induced brightness compensation prediction value is 0, it is set not to perform brightness compensation of the current block(530). When the induced brightness compensation prediction value is not 0, it is set to perform the brightness compensation of the current block(540).
Abstract:
A method for generating an XR(Xor Redundant) picture slice and a loss slice recovering method using the same are provided to recover a loss slice without an additional retransmission process although a slice is lost by generating an XR slice for important slices to be protected after compressing a moving picture and transmitting the generated XR slice. An XR slice application layer and an application range are set up(501). In the set XR slice application layer, the XOR operation of frames including at least one slice is performed in the set application range, and an XR slice is generated(502). When the generated XR slice is transmitted to a decoder, information of the set XR slice application layer and information of the set range are transmitted as a certain type.
Abstract:
본 발명은 다시점 비디오 코딩에 있어서 뷰 사이의 이미지 정보를 보상하는 과정에서 이미지 정보 변이값을 예측하는 방법과 이를 이용한 다시점 영상의 부호화/복호화 방법 및 장치에 관한 것이다. 본 발명의 바람직한 실시예에 따른 이미지 정보 변이값의 예측 방법에 의하면, 이미지 정보 변이값에 대한 예측 효율을 높이기 위하여 현재 블록과 동일한 영상 내에서 현재 블록에 인접한 코딩 완료된 블록 뿐만 아니라 같은 뷰 내에서 현재 영상과 다른 시간에서의 코딩 완료된 영상에서 현재 블록에 대응하는 위치의 블록 및 그 주변 블록의 이미지 정보 변이값을 이용하여 현재 블록에 대한 이미지 정보 변이값을 예측한다. MPEG, H.264/AVC, 다시점 영상, 변이값 보상, 휘도 변이, 색차 변이, RGB 변이
Abstract:
A motion vector prediction method in multi-view video coding and an apparatus and a method for encoding/decoding a multi-view image using the same are provided to find a motion vector prediction value in a multi-view video coding so that the amount of information(entropy) is reduced, consequently the efficiency of prediction coding efficiency is improved. A motion vector prediction value is calculated by using at least one adjustably selected among motion vectors of neighboring blocks of a present block, motion vectors of blocks of corresponding to a time direction of the present block, and motion vectors of blocks corresponding to a view direction of the present block. The motion vector prediction value is the mean value of the selected motion vector. One motion vector is selected, and the motion vector prediction value is identical to the selected motion vector. The motion vector prediction value is the mean value of the selected motion vector and the vector(0,0).