Abstract: A video encoding apparatus is a video encoding apparatus for subjecting a video image to motion compensated prediction coding, comprising an acquisition module to acquire available blocks of blocks having motion vectors from encoded blocks adjacent to a to-be-encoded block and number of the available blocks, an acquisition/selection module to select one selection block from the encoded available blocks, a selection information encoder to encode selection information specifying the selection block using a code table corresponding to the number of available blocks, and an image encoder to subject the to-be-encoded block to motion compensated prediction coding using a motion vector of the selection block.

Abstract: A video encoding apparatus is a video encoding apparatus for subjecting a video image to motion compensated prediction coding, comprising an acquisition module to acquire available blocks of blocks having motion vectors from encoded blocks adjacent to a to-be-encoded block and number of the available blocks, an acquisition/selection module to select one selection block from the encoded available blocks, a selection information encoder to encode selection information specifying the selection block using a code table corresponding to the number of available blocks, and an image encoder to subject the to-be-encoded block to motion compensated prediction coding using a motion vector of the selection block.

Abstract: A video encoding apparatus is a video encoding apparatus for subjecting a video image to motion compensated prediction coding, comprising an acquisition module to acquire available blocks of blocks having motion vectors from encoded blocks adjacent to a to-be-encoded block and number of the available blocks, an acquisition/selection module to select one selection block from the encoded available blocks, a selection information encoder to encode selection information specifying the selection block using a code table corresponding to the number of available blocks, and an image encoder to subject the to-be-encoded block to motion compensated prediction coding using a motion vector of the selection block.

Abstract: According to one embodiment, a video encoding apparatus includes a controller, a loop filter processor, a interpolation filter, a generator, a transform unit, a quantizer, an encoder. The interpolation filter processor directly calculates, if motion compensation prediction of quarter pixel precision is performed, a sub-pixel value of a sub-pixel displaced from an integer-pixel by a quarter pixel in a horizontal direction or a vertical direction based on integer-pixel values of a reproduction image signal, and to generate a reference image including a integer-pixel and a sub-pixel.

Abstract: According to one embodiment, a method can generate an interpolation image signal including the integer-pixel and interpolation pixel values, based on, if the interpolation pixel is not located at the integer-pixel position and in a row of an integer-pixel, and the interpolation pixel is located at a first pixel position displaced from the integer-pixel in horizontal and vertical directions by a half pixel, applying a first filter, and if the interpolation pixel is located at a second pixel position displaced from the integer-pixel in the directions by a quarter pixel, applying a second filter, and if the interpolation pixel is not located at the first and second pixel positions, applying the second and first filters.

Abstract: According to one embodiment, there is provided a stereoscopic video display device including a depth information generator, a depth controller, an image generator, and an image display unit. The depth controller creates a weighted histogram of the depth value by weighting a frequency of each depth value, and adjusts the depth value by using an accumulated weighted histogram obtained from the histogram.

Abstract: According to one embodiment, a video encoding apparatus is a video encoding apparatus for subjecting a video image to motion compensated prediction coding, includes an acquisition module to acquire available blocks of blocks having motion vectors from encoded blocks adjacent to a to-be-encoded block and number of the available blocks, an acquisition/selection module to select one selection block from the encoded available blocks, a selection information encoder to encode selection information specifying the selection block using a code table corresponding to the number of available blocks, and an image encoder to subject the to-be-encoded block to motion compensated prediction coding using a motion vector of the selection block.

Abstract: According to one embodiment, an image reproducing apparatus including, a depth information generation module configured to generate depth information from an input image signal, a depth adjustment module configured to adjust the depth information generated by the depth information generation module for at least part of a depth range in accordance with boundary information, a parallactic information generation module configured to generate parallactic information from the depth information adjusted by the depth adjustment module, and a parallactic image generation module configured to generate a left view point image signal and a right view point image signal in accordance with the parallactic information generated by the parallactic information generation module.

Abstract: According to one embodiment, a moving picture encoding method includes deriving a target filter to be used for a decoded image of a target image to be encoded. The method includes setting a correspondence relationship between target filter coefficient in the target filter and reference filter coefficient in a reference filter in accordance with tap length of the target filter and tap length of the reference filter. The method includes deriving coefficient difference between the target filter coefficient and the reference filter coefficient in accordance with the correspondence relationship. The method includes encoding target filter information including the tap length of the target filter and the coefficient difference.

Abstract: In one embodiment, a moving-picture decoding apparatus is disclosed. A decoding unit decodes input coded data to generate a quantized transform coefficient and filter information. An inverse-transform/inverse-quantization unit executes inverse-quantization and inverse-transform on the quantized transform coefficient to generate a prediction error picture. A decoded-picture generation unit generates a decoded picture using the prediction error picture and a predicted picture. A luminance filter processing unit applies a luminance filter to the luminance signal of the decoded picture based on luminance filter information to generate the luminance signal of a restored picture. A chrominance filter processing unit applies a chrominance filter to the chrominance signal of the decoded picture based on chrominance filter information to generate the chrominance signal of the restored picture.

Abstract: According to one embodiment, a video coding device includes: a bi-directional predictor that generates a predicted image of an image to be coded by using a reference image, which includes a decoded image of a bi-directionally predictive coded image, and motion vector information; and a coder that codes a prediction error between the image to be coded and the predicted image. The bi-directional predictor generates the predicted image while switching a plurality of arithmetic methods that use different rounding methods.

Abstract: According to an embodiment, a moving image encoding method includes generating a predicted image of an original image based on a reference image, performing transform and quantization on a prediction error between the original image and the predicted image to obtain a quantized transform coefficient, performing inverse quantization and inverse transform on the quantized transform coefficient to obtain a decoded prediction error, adding the predicted image and the decoded prediction error to generate a local decoded image, setting filter data containing time-space filter coefficients for reconstructing the original image based on the local decoded image and the reference image, performing a time-space filtering process on the local decoded image in accordance with the filter data to generate a reconstructed image, storing the reconstructed image as the reference image, and encoding the filter data and the quantized transform coefficient.

Abstract: According to one embodiment, a moving image encoding method is disclosed. The method can generate a prediction error image based on a difference between an input moving image and a predicted image. The method can execute transform and quantization on the prediction error image to generate quantized transformation coefficients. The method can generate edge information which indicates an attribute of an edge in a local decoded image corresponding to an encoded image. The method can generate, based on the edge information, control information associated with application of a filter to a decoded image at a decoding side. The method can set filter coefficients for the filter based on the control information. In addition, the method can encode the quantized transformation coefficients and filter coefficient information indicating the filter coefficients to output encoded data.

Abstract: According to one embodiment, an image encoding apparatus performs encoding according to coefficient information whose probability distribution differs due to a prediction method. The image encoding apparatus includes a plurality of probability estimators provided for a plurality of prediction directions of intra-picture prediction and configured to estimate occurrence probabilities of coefficient information respectively, a switch to select a probability estimator according to information of a prediction direction used for intra-picture prediction, and a variable length encoder to encode coefficient information according to occurrence probability of coefficient information provided from a probability estimator selected by the switch.

Abstract: According to one embodiment, a video encoding apparatus includes a setting module to set a filter coefficient for use in filtering in a video decoding apparatus, and to set a rounding offset for controlling rounding of operation in the filtering, and an encoder to output the filter coefficient and information of the rounding offset as encoded data.

Abstract: A video encoding method wherein an encoded image is used as a reference image for prediction of an image to be encoded next, includes generating a restored image by applying a filter to a local decoded image of an encoded image, setting filter coefficient information of the filter, encoding the filter coefficient information, encoding specific information indicating the local decoded image used as a reference image or the restored image, and storing either the local decoded image or the restored image as the reference image in a memory based on the specific information.

Abstract: An image processor to produce a local decoded image corresponding to an input image, a region partitioning module to classify the local decoded image into a plurality of regions using a given parameter, a filter designing module to design a filter coefficient for every classified region, a filter processor to filter the local decoded image according to a corresponding filter coefficient for every classified region, a frame memory to store a filtered image, a predictor to produce a prediction image using a stored image, and an encoder to output a parameter used for classification of the region and information of a filter coefficient every classified region as encoded data are provided.

Abstract: An video encoding apparatus includes a dividing unit 101 to divide an input image signal into to-be-encoded pixel blocks, a reblocking unit 102 to reblock each of the to-be-encoded pixel blocks to generate a first pixel block and a second pixel block, a first prediction unit 108A to perform prediction for the first pixel block using a first local decoded image corresponding to an encoded pixel to generate a first predicted image, a generation unit to generate a second local decoded image corresponding to the first pixel block using a first prediction error representing the difference between the first pixel block and the first predicted image, a second prediction unit 108B to perform prediction for the second pixel block using the first local decoded image and the second local decoded image to generate a second predicted image, an encoding unit 103-105 to transform and encode the first prediction error and a second prediction error representing the difference between the second pixel block and the second pred

Abstract: This apparatus includes a generator which generates a reference matrix having a correlation with an information matrix to be coded from the information matrix. A classifier classifies matrix components around the ith row component of the reference matrix, and generates a set of matrix components equal in distance from the ith row component. A calculator forms a context tree including a plurality of internal nodes corresponding to the matrix components of the set, and a plurality of branches and a plurality of leaf nodes which have one-to-one correspondence with the symbols of the components, associates a sequence of the symbols with a path extending from the leaf node to the root node of the context tree, and calculates the coding probability of the ith row/jth column component of the information matrix. A coder arithmetically codes the ith row/jth column component of the information matrix in accordance with the coding probability.

Abstract: This apparatus includes a generator which generates a reference matrix having a correlation with an information matrix to be coded from the information matrix. A classifier classifies matrix components around the ith row component of the reference matrix, and generates a set of matrix components equal in distance from the ith row component. A calculator forms a context tree including a plurality of internal nodes corresponding to the matrix components of the set, and a plurality of branches and a plurality of leaf nodes which have one-to-one correspondence with the symbols of the components, associates a sequence of the symbols with a path extending from the leaf node to the root node of the context tree, and calculates the coding probability of the ith row/jth column component of the information matrix. A coder arithmetically codes the ith row/jth column component of the information matrix in accordance with the coding probability.