Abstract: Methods and apparatuses for efficiently coding and decoding multi-view video are provided. A method of decoding multi-view video includes: interpreting from a received bitstream a block type indicating a method of determining a motion vector of a current block present in a current picture of the multi-view video; interpreting a first picture type indicating whether the current picture is a reference picture type for inter prediction; interpreting additional information of the current picture based on at least one of the interpreted first picture type and the interpreted block type; and reconstructing the current block and the current picture by using the additional information.

Abstract: A method for transmitting stereoscopic images using a variety of transport protocols is provided. To this end, a stereoscopic image packet is defined that comprises a stereoscopic packet header and a stereoscopic video packet header. The defined stereoscopic packet header and stereoscopic video packet header are used to transmit metadata needed for transmission of stereoscopic images. By doing so, it is possible to ensure compatibility with a variety of transport protocols.

Abstract: A method and apparatus transmitting stereoscopic image data according to a variable channel environment are provided.

Abstract: Provided are a method and an apparatus for selectively encoding/decoding point sequences to maximize bit efficiency of a lightweight application scene representation (LASeR) binary stream. The point sequence encoding method includes the steps of: for each point sequence, (a) selecting one of exponential-Golomb (EG) encoding and fixed length (FL) encoding schemes; (b) when the FL encoding scheme is selected, encoding the point sequence using the FL encoding scheme to generate a binary stream; and (c) when the EG encoding scheme is selected, encoding the point sequence using the EG encoding scheme to generate a binary stream. The binary stream includes a flag indicating which encoding scheme is selected and a parameter k, with which the EG encoding can be most effectively performed, when the EG encoding scheme is selected. According to the encoding method, LASeR point sequences can be efficiently encoded and, during a decoding process, a large overhead is not incurred to a decoder (terminal).

Abstract: Provided is a file format for encoded image data which can be reproduced into a lifelike stereoscopic image by a display apparatus for displaying a stereoscopic image. The file format for an encoded stereoscopic image includes an image data unit containing image information of the encoded stereoscopic image and a header unit containing meta data used to decode and reproduce the image information of the encoded stereoscopic image contained in the image data unit. The header unit can include at least one header unit of a camera header sub-unit containing information on left and right cameras used to acquire the stereoscopic image, a codec header sub-unit containing information on the encoding of the stereoscopic image, and a display header sub-unit containing information on a barrier type display apparatus for receiving and reproducing the encoded stereoscopic image data.

Abstract: A method of constructing an encoded stereoscopic image data file is provided. The encoded stereoscopic image data file includes a file type declaration unit indicating whether the file is a stereoscopic image, a meta data unit including one or more track containers for containing meta data of the encoded stereoscopic image data, and an image data unit including one or more stereoscopic image data containers for containing image information of the encoded stereoscopic image data.

Abstract: A method and apparatus for transmitting and receiving rich media content. A creator creates configuration information of each node formed in a hierarchical structure in a changeable format in which a driver can change the configuration information, and transmits content including the configuration information of each node to the driver. A driver receives the content, determines whether configuration information of each node formed in a hierarchical structure in the received content is created in the changeable format, reconfigures each node when the configuration information is created in the changeable format, and performs an application on the reconfigured node.

Abstract: Disclosed are a system and method for encoding and decoding an image. The image compression system includes an image segmentation unit (110) for segmenting a first image into a plurality of sub-images; a first encoding unit (120) for encoding the sub-images to output sub-image bitstreams; a BMAP construction unit (130) for calculating the quantity of information of each sub-image bitstream and generating BMAP information using the calculated quantity of information and information on construction of each sub-image; and a bitstream combining unit (150) for combining the sub-image bitstreams and BMAP information.

Abstract: Provided is a multiple camera system, and more particularly, a method and apparatus for processing hopping default views in an apparatus for encoding/decoding video streams of multiple view positions. The encoding apparatus for the multiple camera system includes an encoder for receiving video signals of multiple view positions, and encoding the video signals based on a predetermined default Group of Pictures (GoP); a default GoP selector for providing the default GoP information to the encoder; and a multiplexer for multiplexing the encoded video signals and sequentially outputting only the default GoP.

Abstract: The construction method of NALU (Network Abstraction Layer Unit) for IPv6 label switching and its using algorithms of video encoding, QoS control, and decoding are provided. According to an embodiment of the present invention, the NALU format is composed of the NALH (Network Abstraction Layer Header) including the label and the NAL (Network Ab straction Layer) payload. Here, the label is determined based on layer information which is combination of a spatial scalable level, a temporal scalable level, and a quality scalable level of the encoded data. The decoder uses the label to decide which one of multiple decoding modules is used to decode the current NAL payload. Moreover, the label can be included in the packet header so that the MANE (Media Aware Network Element) can use the label to decide whether to forward the packet or drop it.

Abstract: Provided is a video encoding rate controlling method based on the length of a Transport Stream (TS) packet in a video coding apparatus, the method including the steps of: a) setting up an initial target bit quantity for a picture to be coded; b) calculating a length of a payload used to packetize a coded picture into TS packets; c) adjusting the target bit quantity based on the length of the payload; and d) controlling a rate based on the adjusted target bit quantity in the step c).

Abstract: Provided is a video encoding and decoding method and apparatus using pixel-based prediction. A pixel-based video encoding apparatus includes a block prediction unit, a residual image generation unit, a pixel prediction unit, and an entropy-coding unit. The block prediction unit performs temporal or spatial prediction between a reference image and a current image in order to generate a prediction block corresponding to a current block to be encoded. The residual image generation unit generates a residual image block composed of a residual signal corresponding to a difference between pixels of the prediction block and pixels of the current block.

Abstract: Provided is a method for convergent type three-dimensional (3D) multi-viewpoint image acquisition. The method for acquiring a multi-viewpoint image in an image acquisition apparatus comprises the steps of: converting the image acquisition apparatus to a multi-viewpoint image photographing mode; if converted to the multi-viewpoint image photographing mode in the converting step, providing a plurality of geometric shapes to set a position of an object to be photographed within a screen and selecting a desired shape of the geometric shapes in response to an inputted shape selection signal; if the desired geometric shape is selected in the shape providing step, adjusting a position and a size of the selected geometric shape in response to a shape adjustment signal; and photographing a whole image having the object that places within the adjusted geometric shape in the adjusting step.

Abstract: A method of storing 3D image data in a recording medium includes: loading, in a predetermined file type field, image type information indicating either one of a single stereoscopic image or a compound image including a monoscopic image and a stereoscopic image; loading, in a predetermined image configuration information container field, scene descriptor information indicating temporal and spatial relations between a plurality of media objects included in the three-dimensional image, object configuration information indicating attributes of each media object of said plurality of media objects and a configuration relation between encoded streams of the plurality of media objects, configuration information of the encoded streams; loading in an image data container field media data of an image to be stored; and loading, in a meta container field, metadata including information for playing the 3D image data.

Abstract: Disclosed are a transcoding apparatus and method between two codecs each including a deblocking filter. The transcoding method between first and second codecs each including a deblocking filter, may include decoding input data encoded according to the first codec, according to the first codec so as to generate decoded data; and encoding the decoded data according to the second codec. The decoded data may include data on which deblocking filtering is not performed by the first codec, or data on which deblocking filtering is adaptively performed by the first codec. The decoded data may further include data on which deblocking filtering is performed by the first codec. The decoded data may be used as input data when the second codec performs encoding and/or when the second codec performs motion estimation.

Abstract: Provided is a method for performing motion compensated temporal filtering (MCTF)-based coding on a video sequence using the structure of adaptively divided group of pictures (GOP). The method includes the steps of, for each predefined 2N frame-sized group of pictures (GOP) of the video sequence, (a) encoding the 2N frame-sized GOP of the video sequence based on each of the different GOP sizes from the maximum size, 2N, to the minimum size, 2N (M is an integer between 1 and N) and obtaining different values between frames reconstructed after the encoding is performed and frames after the MCTF is performed, based on each of the different GOP sizes; (b) selecting at least one sub-GOP based on the difference values obtained by encoding the 2N frame-sized GOP of the video sequence based on each of the different GOP sizes; and (c) generating a bitstream by encoding the 2N-frame-sized GOP based on the at least one selected sub-GOP.

Abstract: Video data encoding and decoding methods and apparatuses are provided. In the video data encoding and decoding methods, codes books are provided to an encoder and a decoder. In the encoder, an index corresponding to a vector that is most similar to a current vector of an input moving picture among the vectors of the code book is encoded. In the decoder, the index is decoded. Accordingly, it is possible to increase compression ratio and reduce calculation complexity.

Abstract: Disclosed is a method of determining illumination compensation in a multi view video coding. The method includes determining when a current block performing illumination compensation is in a B skip mode and deriving a predicted illumination compensation value of the current block by using information regarding neighbor blocks of the current block and when the derived predicted illumination compensation value is not determining, setting the current block not to perform the illumination compensation; and when the derived predicted illumination compensation value is determining, setting the current block to perform the illumination compensation.

Abstract: Disclosed is a method and apparatus for illumination compensation in a multi view video coding. The method includes deriving a predicted illumination compensation value of the current block by using information on neighbor blocks of the current block when a current block performing illumination compensation is in a skip mode; setting the current block not to perform the illumination compensation when the derived predicted illumination compensation value is 0 and setting the current block to perform the illumination compensation when the derived predicted illumination compensation value is not 0.

Abstract: Disclosed is a method of storing scene comprising a three-dimensional image, which has been generated by converting an image input an apparatus supporting photographing of the three-dimensional image, into a recording medium.