Abstract: A merging motion information calculating unit calculates motion information of a plurality of coded neighboring blocks located at predetermined positions neighboring to a coding target block in space as spatial motion information candidates of the coding target block, in a case where there are spatial motion information candidates having the same motion information out of the spatial motion information candidates, sets one of the spatial motion information candidates having the same motion information as the spatial motion information candidate and, calculates a temporal motion information candidate of the coding target block by using the motion information of a coded block included in a picture that is different in time from a picture including the coding target block, and includes the spatial motion information candidates and the temporal motion information candidate in candidates for the motion information.

Abstract: A prediction information derivation unit derives inter prediction information candidates from inter prediction information of coded prediction blocks neighboring a prediction block subject to coding within the same picture as the prediction block subject to coding and inter prediction information of a prediction block in a coded picture that is different from the prediction block subject to coding. The prediction information derivation unit determines an inter prediction information candidate to be used for inter prediction of the prediction block subject to coding from the inter prediction information candidates that have been derived. A second bitstream generation uni codes an index that indicates the inter prediction information candidate based on the number of the inter prediction information candidates.

Abstract: A merging motion information calculating unit calculates motion information of a plurality of coded neighboring blocks located at predetermined positions neighboring to a coding target block in space as spatial motion information candidates of the coding target block, in a case where there are spatial motion information candidates having the same motion information out of the spatial motion information candidates, sets one of the spatial motion information candidates having the same motion information as the spatial motion information candidate and, calculates a temporal motion information candidate of the coding target block by using the motion information of a coded block included in a picture that is different in time from a picture including the coding target block, and includes the spatial motion information candidates and the temporal motion information candidate in candidates for the motion information.

Abstract: A motion vector predictor candidate generating unit makes a prediction based on a motion vector of one of coded neighboring blocks that are neighboring to a coding target block in space or time and generates a plurality of motion vector predictor candidates. A motion vector predictor redundant candidate removing unit removes the motion vector predictor candidates having identity among the motion vector predictor candidates predicted based on a coded neighboring block that is neighboring in space from a motion vector predictor candidate list with at least one being left. A motion vector predictor selecting unit selects a motion vector predictor from the plurality of motion vector predictor candidates. A first bitstream generating unit codes information representing the selected motion vector predictor.

Abstract: A merging motion information calculating unit calculates motion information of a plurality of coded neighboring blocks located at predetermined positions neighboring to a coding target block in space as spatial motion information candidates of the coding target block, in a case where there are spatial motion information candidates having the same motion information out of the spatial motion information candidates, sets one of the spatial motion information candidates having the same motion information as the spatial motion information candidate and, calculates a temporal motion information candidate of the coding target block by using the motion information of a coded block included in a picture that is different in time from a picture including the coding target block, and includes the spatial motion information candidates and the temporal motion information candidate in candidates for the motion information.

Abstract: In a picture coding device for coding picture signals including a brightness signal and a color-difference signal in a block unit using intra-prediction and coding information regarding an intra-prediction mode, when aspect ratios of pixels of the brightness signal and the color-difference signal are different from each other, a bitstream generator converts a mode number of a first intra-color-difference prediction mode used when the aspect ratios are equal to each other into a scaled mode number and derives a second intra-color-difference prediction mode used when the aspect ratios are different from each other.

Abstract: A prediction information derivation unit derives inter prediction information candidates from inter prediction information of coded prediction blocks neighboring a prediction block subject to coding within the same picture as the prediction block subject to coding and inter prediction information of a prediction block in a coded picture that is different from the prediction block subject to coding. The prediction information derivation unit determines an inter prediction information candidate to be used for inter prediction of the prediction block subject to coding from the inter prediction information candidates that have been derived. A second bitstream generation uni codes an index that indicates the inter prediction information candidate based on the number of the inter prediction information candidates.

Abstract: In a case where a partition mode in which luma signals are partitioned horizontally and vertically is set when an intra prediction of a picture signal is made in units of minimal coding blocks set in advance, an intra prediction unit is configured to make an intra prediction of a chroma signal in units of prediction blocks of the intra prediction of chroma signals within the minimal coding block set in accordance with a chroma format. A second bitstream constructing unit constructs a bitstream of information relating to a luma intra prediction mode of a prediction block of luma signals and information relating to a chroma intra prediction mode of a prediction block of chroma signals.

Abstract: A motion vector predictor candidate generating unit makes a prediction based on a motion vector of one of coded neighboring blocks that are neighboring to a coding target block in space or time and generates a plurality of motion vector predictor candidates. A motion vector predictor redundant candidate removing unit removes the motion vector predictor candidates having identity among the motion vector predictor candidates predicted based on a coded neighboring block that is neighboring in space from a motion vector predictor candidate list with at least one being left. A motion vector predictor selecting unit selects a motion vector predictor from the plurality of motion vector predictor candidates. A first bitstream generating unit codes information representing the selected motion vector predictor.

Abstract: A motion vector predictor candidate generating unit makes a prediction based on a motion vector of one of coded neighboring blocks that are neighboring to a coding target block in space or time and generates a plurality of motion vector predictor candidates. A motion vector predictor redundant candidate removing unit removes the motion vector predictor candidates having identity among the motion vector predictor candidates predicted based on a coded neighboring block that is neighboring in space from a motion vector predictor candidate list with at least one being left. A motion vector predictor selecting unit selects a motion vector predictor from the plurality of motion vector predictor candidates. A first bitstream generating unit codes information representing the selected motion vector predictor.

Abstract: A merging motion information calculating unit calculates motion information of a plurality of coded neighboring blocks located at predetermined positions neighboring to a coding target block in space as spatial motion information candidates of the coding target block, in a case where there are spatial motion information candidates having the same motion information out of the spatial motion information candidates, sets one of the spatial motion information candidates having the same motion information as the spatial motion information candidate and, calculates a temporal motion information candidate of the coding target block by using the motion information of a coded block included in a picture that is different in time from a picture including the coding target block, and includes the spatial motion information candidates and the temporal motion information candidate in candidates for the motion information.

Abstract: A motion vector predictor candidate generating unit makes a prediction based on a motion vector of one of coded neighboring blocks that are neighboring to a coding target block in space or time and generates a plurality of motion vector predictor candidates. A motion vector predictor redundant candidate removing unit removes the motion vector predictor candidates having identity among the motion vector predictor candidates predicted based on a coded neighboring block that is neighboring in space from a motion vector predictor candidate list with at least one being left. A motion vector predictor selecting unit selects a motion vector predictor from the plurality of motion vector predictor candidates. A first bitstream generating unit codes information representing the selected motion vector predictor.

Abstract: There is provided a picture encoding device that encodes a picture and encodes a difference quantization parameter in a unit of a quantization coding block which is divided from the picture and is a management unit of a quantization parameter. A quantization parameter calculator derives a quantization parameter of the quantization coding block to be encoded. A prediction quantization parameter derivation unit derives a prediction quantization parameter using the quantization parameters of a plurality of quantization coding blocks which precede the quantization coding block to be encoded in order of encoding. A difference quantization parameter generator derives a difference quantization parameter of the quantization coding block to be encoded, using a difference between the quantization parameter of the quantization coding block to be encoded and the prediction quantization parameter. A first bitstream generator encodes the difference quantization parameter of the quantization coding block to be encoded.

Abstract: In a moving picture coding device that codes a moving picture using motion compensation prediction in units of blocks acquired by dividing each picture of the moving picture, a prediction mode determiner derives motion information of a coding target block. A motion compensation predictor changes the derived motion information for the coding target block having a size smaller than or equal to a certain size when the coding target block has the size smaller than or equal to the certain size. The motion compensation predictor constructs a prediction signal of the coding target block through the motion compensation prediction using the derived motion information when the coding target block has a size larger than the certain size or using the changed motion information when the coding target block has the size smaller than or equal to the certain size.

Abstract: In a moving picture coding device that codes a moving picture using motion compensation prediction in units of blocks acquired by dividing each picture of the moving picture, a prediction mode determiner derives motion information of a coding target block. A motion compensation predictor changes the derived motion information for the coding target block having a size smaller than or equal to a certain size when the coding target block has the size smaller than or equal to the certain size. The motion compensation predictor constructs a prediction signal of the coding target block through the motion compensation prediction using the derived motion information when the coding target block has a size larger than the certain size or using the changed motion information when the coding target block has the size smaller than or equal to the certain size.

Abstract: A merging motion information calculating unit calculates motion information of a plurality of coded neighboring blocks located at predetermined positions neighboring to a coding target block in space as spatial motion information candidates of the coding target block, in a case where there are spatial motion information candidates having the same motion information out of the spatial motion information candidates, sets one of the spatial motion information candidates having the same motion information as the spatial motion information candidate and, calculates a temporal motion information candidate of the coding target block by using the motion information of a coded block included in a picture that is different in time from a picture including the coding target block, and includes the spatial motion information candidates and the temporal motion information candidate in candidates for the motion information.

Abstract: A motion vector predictor candidate generating unit makes a prediction based on a motion vector of one of coded neighboring blocks that are neighboring to a coding target block in space or time and generates a plurality of motion vector predictor candidates. A motion vector predictor redundant candidate removing unit removes the motion vector predictor candidates having identity among the motion vector predictor candidates predicted based on a coded neighboring block that is neighboring in space from a motion vector predictor candidate list with at least one being left. A motion vector predictor selecting unit selects a motion vector predictor from the plurality of motion vector predictor candidates. A first bitstream generating unit codes information representing the selected motion vector predictor.

Abstract: In a picture coding device, a significant coefficient information coding controller 706 and an arithmetic encoder 701 code significant difference coefficient information indicating that a difference coefficient value is not zero and significant for each of the difference coefficients in the partial region of the coding target. A difference coefficient value coding controller 707 and the arithmetic encoder 701 code difference coefficient values when significant difference coefficient information is significant for each of pixels in the partial region of the coding target. The significant coefficient information coding controller 706 decides a context for coding the significant difference coefficient information in the partial region of the coding target based on information indicating significance of the difference coefficient in the coded partial region.

Abstract: A motion vector predictor candidate generating unit makes a prediction based on a motion vector of one of coded neighboring blocks that are neighboring to a coding target block in space or time and generates a plurality of motion vector predictor candidates. A motion vector predictor redundant candidate removing unit removes the motion vector predictor candidates having identity among the motion vector predictor candidates predicted based on a coded neighboring block that is neighboring in space from a motion vector predictor candidate list with at least one being left. A motion vector predictor selecting unit selects a motion vector predictor from the plurality of motion vector predictor candidates. A first bitstream generating unit codes information representing the selected motion vector predictor.

Abstract: In a picture coding device for coding picture signals including a brightness signal and a color-difference signal in a block unit using intra-prediction and coding information regarding an intra-prediction mode, when aspect ratios of pixels of the brightness signal and the color-difference signal are different from each other, a bitstream generator converts a mode number of a first intra-color-difference prediction mode used when the aspect ratios are equal to each other into a scaled mode number and derives a second intra-color-difference prediction mode used when the aspect ratios are different from each other.