Mitsubishi Electric Corporation

Mitsubishi Electronic Corporation

Norimichi Hiwasa

Shunichi Sekiguchi

Tokumichi Murakami

Akira Minezawa

Kazuo Sugimoto

Yoshimi Moriya

Kazuyuki Miyazawa

Ryoji Hattori

Yusuke Itani

Takayuki Semitsu

A parallel processing starting unitthat partitions an inputted image into tiles each having a predetermined size, and distributes tiles obtained through the partitioning, and N tile encoding units-to-N each of that carries out a prediction difference encoding process on a tile distributed thereto by the parallel processing starting unitto generate a local decoded image are disposed, and each of N tile loop filter units-to-N determines a filter per tile suitable for a filtering process on the local decoded image generated by the corresponding one of the tile encoding units-to-N, and carries out the filtering process on the local decoded image by using the filter.

Video decoding device and video decoding method

Since time hierarchically encoded video data needs to include video data of a basic hierarchical layer, and video data cannot be generated in which a frame belonging to an upper hierarchical layer is only encoded, even in a case in which only a part of frames is processed, a basic hierarchical layer frame is needed to be included, and thus, there has been a problem that video data in which only the frame belonging to the upper hierarchical layer is encoded cannot be separately processed. In the present invention, a variable length encoding unit is disposed which encodes, for each sequence, a basic hierarchical layer existence flag showing whether or not a basic hierarchical layer is included in the sequence.

Video encoding device, video decoding device, video encoding method, and video decoding method

A variable length encoding unitvariable-length-encodes an index indicating a classification method of carrying out a class classification on each coding block having a largest size, the classification method being determined by a loop filter unit, and also variable-length-encodes a parameter about an offset value for each class determined for each coding block having the largest size on the basis of a binarization process using a truncated unary code.

Image encoding device, image decoding device, image encoding method, and image decoding method

When the signal format of a color image is YUV4:2:2, and an intra prediction parameter, which is used for an intra-frame prediction process on the chrominance signals in a prediction block, shows the same prediction mode as an intra prediction mode for the luminance signal in the prediction block, an intra prediction unitconverts an index indicating the intra prediction mode for the luminance signal, and performs the intra-frame prediction process on the chrominance signals in an intra prediction mode indicated by the index after conversion.

Color image encoding device, color image decoding device, color image encoding method, and color image decoding method

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Tokyo, Japan

Norimichi Hiwasa