Abstract: A method includes extracting a first vector used to code a specific block belonging to a coded field picture arranged chronologically adjacent to a field picture to be coded and to a block to be coded, generating a second vector by scaling the first vector based on a temporal distance between the field picture and a second picture specified by a reference index and referenced for the block and included in the field picture and a temporal distance between a first picture pointed by the first vector and the coded field picture arranged chronologically adjacent to the field picture, and correcting the second vector based on a parity of the field picture, a parity of the first picture, a parity of the second picture and a parity of the coded field picture and forming the corrected second vector.

Abstract: A video decoding apparatus includes a reference picture list storing unit configured to store picture information of pictures; a motion vector information storing unit configured to store motion vector information including motion vectors of blocks that are spatially and temporally adjacent to a target block to be decoded and reference picture identifiers indicating pictures that the motion vectors refer to; and a vector predictor generating unit configured to scale a vector predictor candidate for a motion vector of the target block based on the picture information and the motion vector information and to correct the scaled vector predictor candidate toward 0 by a predetermined amount.

Abstract: A video multiplexing apparatus includes: a control unit which determines first decode/display time information and second decode/display time information for each picture in video data and for each encoding unit of first media data; a video packet generating unit which appends the first and second decode/display time information for the picture to encoded data of the video data; and a media packet generating unit which appends the first and second decode/display time information for the encoding unit to encoded data of the first media data. The first decode/display time information is used when the decoding unit of the video data is a picture, and the second decode/display time information is used when the decoding unit is a sub-picture. The picture display time based on the second decode/display time information is earlier than the picture display time based on the first decode/display time information.

Abstract: An apparatus decodes encoded moving image data in which a picture is divided and encoded, into two or more small areas that include at least a block and do not overlap with each other. The apparatus includes: a unit configured to decide first and second parameters being decoding parameters of another block for which decoding has already been performed in the same picture and referred to in an entropy decoding process and an extension process of each block, using position information of each small area and reference relation information to another small area; a decoder configured to perform the decoding process, in an order of the decoding process and the extension process, by referring only to the first parameter; and an extender configured to perform the extension process in the order by referring only to the second parameter in compression information of each block obtained by the decoding process.

Abstract: A video decoding apparatus includes a reference picture list storing unit configured to store picture information of pictures; a motion vector information storing unit configured to store motion vector information including motion vectors of blocks that are spatially and temporally adjacent to a target block to be decoded and reference picture identifiers indicating pictures that the motion vectors refer to; and a vector predictor generating unit configured to scale a vector predictor candidate for a motion vector of the target block based on the picture information and the motion vector information and to correct the scaled vector predictor candidate toward 0 by a predetermined amount.

Abstract: A video decoding apparatus includes a reference picture list storing unit configured to store picture information of pictures; a motion vector information storing unit configured to store motion vector information including motion vectors of blocks that are spatially and temporally adjacent to a target block to be decoded and reference picture identifiers indicating pictures that the motion vectors refer to; and a vector predictor generating unit configured to scale a vector predictor candidate for a motion vector of the target block based on the picture information and the motion vector information and to correct the scaled vector predictor candidate toward 0 by a predetermined amount.

Abstract: A video image encoding device includes a processor configured to execute a procedure. The procedure includes: computing a pixel average value and a pixel variation level for each of an encoding target block and an adjacent block; determining whether or not a false contour generation condition has been satisfied based on the pixel average values and pixel variation levels computed for the encoding target block and the adjacent block; and if the determination result is that the false contour generation condition has been satisfied, quantizing a prediction error image, representing a difference between an image of the encoding target block and a predicted image of the encoding target block encoded by the intra-frame prediction encoding, with a smaller quantization parameter than a set quantization parameter.

Abstract: A video image encoding device includes a calculation unit for calculating a decoding time of each group including plural blocks; a source encode unit for encoding each of the plural blocks based on the encoding amount of each block controlled based on the decoding time and generating compressed data; and an entropy encode unit for performing an arithmetic encoding process on the compressed data in each block and outputting a bit stream. The entropy encode unit outputs undetermined bits retained by the arithmetic encoding process when all bits corresponding to the compressed data in each group are not output at a time point when the arithmetic encoding process on the compressed data in a predetermined number of blocks in a next group is finished, and the calculation unit shifts the decoding time of each group by a processing time of the predetermined number of blocks.

Abstract: A video decoder decoding an encoded stream includes a parallel entropy decoding part to entropy decode the stream of blocks in block lines in parallel, a parallel QP prediction part to compute prediction values of the blocks in the block lines in parallel, and a parallel decoding processing part to generate decoded pixels of the blocks in the block lines in parallel, the decoded pixel being obtained utilizing data decoded by the parallel entropy decoding part and the prediction value. When performing computing processing in parallel per unit of N block lines, the processing is performed on a processing block in a (K?1)th block line preceding a processing block in a Kth block line by at least one block in a horizontal position to compute the prediction value of the processing block by referring to a block already processed corresponding to the processing block.

Abstract: A moving image processing apparatus includes a storage unit to store encoding parameter information generated by encoding each of multiple blocks obtained by partitioning an image; a candidate list generation unit to generate a prediction vector candidate list including two prediction vector candidates for a motion vector of each of the blocks to be processed; a difference vector calculation unit to set one bit of predetermined information in selection information for the prediction vector candidates if inter-prediction is applied to the block to be processed, and to calculate a difference vector representing a difference between the motion vector of the block to be processed and one of the prediction vector candidates designated by the selection information; and a variable-length encoding unit to apply variable-length encoding to the encoding parameter information including the difference vector and the selection information.

Abstract: An image compression apparatus including an image segmenting unit to segment an image into a plurality of image blocks; a prediction unit to take an adjacent pixel to which each pixel points in the same angle as a reference pixel, and take a pixel value or a reconstruction value of the reference pixel as a prediction value; an encoding unit to encode a residual obtained by subtracting the prediction value from the pixel value, or a quantization coefficient obtained through a transformation and a quantization of the residual; and a reconstruction unit to add the prediction value with corresponding residual or a residual obtained through an inverse transformation and an inverse quantization of the quantization coefficient to obtain a reconstruction value of each pixel.

Abstract: A video multiplexing apparatus includes: a control unit which determines first decode/display time information and second decode/display time information for each picture in video data and for each encoding unit of first media data; a video packet generating unit which appends the first and second decode/display time information for the picture to encoded data of the video data; and a media packet generating unit which appends the first and second decode/display time information for the encoding unit to encoded data of the first media data. The first decode/display time information is used when the decoding unit of the video data is a picture, and the second decode/display time information is used when the decoding unit is a sub-picture. The picture display time based on the second decode/display time information is earlier than the picture display time based on the first decode/display time information.

Abstract: A moving-picture coding device that divides a moving-picture signal comprised of a plurality of fields into a plurality of blocks and that can select coded area prediction in a current field and inter-field motion compensation prediction by block units, the moving-picture coding device comprises a forced intra block line determining unit, an intra selecting unit, a vector limit block line determining unit, a vector limit unit, a slice division unit a deblocking filter inhibit unit.

Abstract: A video encoding apparatus appends decoding delay and display delay correction information to encoded video data in order to ensure that even when one or more pictures that are later in encoding order than a starting encoded picture in a video data stream to be spliced to a trailing end of another encoded video data stream have been discarded from among pictures contained in the video data stream, the starting encoded picture and its subsequent pictures can be continuously decoded and displayed by a video decoding apparatus. The correction information is calculated based on a decoding interval between each discarded picture and a picture that immediately precedes the discarded picture. The video decoding apparatus corrects the decoding delay and display delay of the starting encoded picture and its subsequent pictures by using the calculated correction information.

Abstract: In a video coding apparatus, a plurality of coding units perform compression coding of a single source stream of video data. A control unit controls those coding units in such a way that all the coding units produce respective interframe coded pictures with identical playback times as a first-coded picture in a picture group (e.g., GOP) and produce identical local decoded pictures based on the respective intraframe coded pictures. A selection decision unit makes a selection, for each picture group, of one of the coded video data from the coding units on the basis of their coding results. According to this selection, a selection unit selectively outputs one of the coded video data. This output switching operation is performed at a point immediately before a forward interframe predictive coded picture that appears first of those in a picture group included in each of the coded video data outputs being switched.

Abstract: A video encoding apparatus appends decoding delay correction information and display delay correction information to encoded video data in order to ensure that even when one or more pictures that are later in encoding order in the video data than a first picture that may potentially be spliced to a trailing end of other encoded video data have been discarded, the first picture and subsequent pictures in the encoded video data can be continuously decoded and displayed by a video decoding apparatus. The video decoding apparatus corrects the decoding delay and display delay of the first picture and its subsequent pictures by using the decoding delay correction information and display delay correction information.

Abstract: A video encoding apparatus includes a picture encoding unit which encodes each picture contained in the video data and appends, to the encoded video data, additional information that indicates the position of a splicing point picture within the encoded video data. The splicing point picture is a picture in which, even when other encoded video data is added immediately following the splicing point picture, the splicing point picture and all pictures preceding the splicing point picture in encoding order can be decoded.

Abstract: There are provided a device and a method capable of increasing the processing speed and preventing the increase of the device size by eliminating decompression/decoding processing not required for decompression/decoding of a moving picture of a point-of-view desired by a user. The decompression/decoding device includes: instruction input means for receiving an instruction for a frame to be outputted; judgment means for reading out motion prediction information from the moving picture data and judging the frame used for motion prediction in compression/encoding of the frame to be outputted; and decompression/decoding means for decompressing/decoding only the frame judged by the judgment means and the frame to be outputted.

Abstract: A moving image decoding method for decoding encoded data of an image partitioned into a plurality of blocks includes determining a predicted motion vector corresponding to a motion vector of a block to be decoded by using motion vector information, the motion vector information including a motion vector of an already-decoded block and reference destination information designating a reference destination of the motion vector of the already-decoded block; controlling a decoding process of the motion vector of the block to be decoded using the predicted motion vector depending on whether the reference destination information designating the reference destination of the motion vector designates an inter-view reference image; and decoding the motion vector of the block to be decoded with the controlled decoding process.

Abstract: A motion video encoding apparatus includes: a group determining unit which determines, for each block, a group to which the block belongs; a group decode time information computing unit which computes a decode time for each group; a code amount control unit which controls, for each group, an amount of code resulting from entropy encoding each block in the group so that data needed for decoding all of the blocks in the group arrives at a stream receive buffer by a decode time of the group when the data is transmitted at a prescribed transmission rate; a compression unit which compresses the data of each block based on the amount of code of the block; an entropy encoding unit which entropy-encodes the compressed data of each block; and a decode information appending unit which appends, to data to be output, correction information for the decode time of each group.