Sharp Kabushiki Kaisha Corporation

Velos Media, LLC

Velos Media International Limited

Yasuaki Tokumo

Shuichi Watanabe

Takeshi Tsukuba

Tomohiro Ikai

Takeshi Chujoh

Takuya Iwanami

Tomoko Aono

Maki Takahashi

Keiichiro Takada

Hideki Suzuki

Norio Itoh

Yukinobu Yasugi

Hiroshi Watanabe

Tomoyuki Yamamoto

Hiroyuki Katata

Tomonori Hashimoto

Toshio Nomura

Hiroyuki Okada

Shinya Hasegawa

Shuhichi Watanabe

An arithmetic coding scheme is provided for coding and decoding 3D data and improves coding efficiency for mesh displacements and high-quality coding, and decoding of the 3D data. A 3D data decoding apparatus is also provided for decoding coded data. The apparatus contains an arithmetic decoder that is configured to arithmetically decode a mesh displacement from the coded data. The arithmetic decoder decodes, from the coded data, a first flag indicating whether a coefficient of the mesh displacement has an absolute value greater than 0, a second flag indicating whether the coefficient has an absolute value greater than 1, and a third flag indicating whether the coefficient has an absolute value greater than 2.

3D data decoding apparatus and 3D data coding apparatus

A 3D data decoding apparatus for decoding coded data. The 3D data decoding apparatus includes an arithmetic decoder configured to arithmetically decode mesh displacement from the coded data, a context selection unit configured to select a context in the arithmetic decoding, and a context initialization unit configured to set an initial value of the context. In the context initialization unit, a context initialization parameter for initializing the context is decoded from the coded data.

Object There is the problem in the related art that the relationship between a patch size which is a unit of processing of a neural network and the sizes of input and output pictures is not clearly defined. Solution A video decoding apparatus for generating a decoded picture by decoding coded data, the video decoding apparatus comprising:

Video coding apparatus and video decoding apparatus

A filtered image with enhanced image quality is output. Provided is a loop filter including: a filtering processing unit configured to apply a filter to an unfiltered image; and an ALF unit configured to receive input of a DL image to which a filter is applied by a first filtering processing unit out of the filtering processing unit. The ALF unit further receives input of the unfiltered image.

Image filtering apparatus, image decoding apparatus, and image coding apparatus

To apply a filter to input image data in accordance with an image characteristic. A CNN filter includes a neural network configured to receive an input of one or multiple first type input image data and one or multiple second type input image data, and output one or multiple first type output image data, the one or multiple first type input image data each having a pixel value of a luminance or chrominance, the one or multiple second type input image data each having a pixel value of a value corresponding to a reference parameter for generating a prediction image and a differential image, the one or multiple first type output image data each having a pixel value of a luminance or chrominance.

A prediction set determining section selects a prediction set from a prediction set group including a plurality of prediction sets having different combinations of prediction modes corresponding to different prediction directions. Further, a prediction mode determining section selects a prediction mode from the prediction set thus selected. An entropy encoding section encodes the prediction set thus selected, the prediction mode thus selected, and residual data between an input image and a predicted image formed on the basis of the prediction set and the prediction mode. This allows an image encoding device to carry out predictions from more various angles, thereby improving prediction efficiency.

Image decoder, image decoding method, image encoder, and image encode method

There is provided a transmitter by which a reception side easily detects packet loss of a transport packet. The transmitter () includes a content dividing unit () that divides a set composed of a plurality of units into a plurality of subsets, a transport sequence assigning unit () that assigns, to the packet, the transport sequence of the unit within a component and the transport sequence of the unit within the subset, and a header generating unit () that generates a packet including the transport sequences.

Reproduction device and generation device

A client () is provisioned with a content selection unit () for referencing description information (), selecting content to be played in a certain period, and at the same time, and selecting content to be played at the next period from an id of a subset that is the same as the subset selected at the period, a request execution unit () for requesting the transmission of the selected content, and a content playback unit () for continuously playing the content transmitted in response to the request.

Playback device

A content transmission unit () is provided that performs chunk transfer of a segment to a client () in subsegment unit, the subsegment being formed by dividing the segment into a plurality of pieces after receiving a request requiring transmission of the segment from the client ().

Content transmission device and content playback device

Generation device, reproduction device, data structure, generation method, reproduction method, control program, and recording medium

Image encoding device, image encoding method, image decoding device, image decoding method, program, and storage medium

Content transmission device, content playback device, content distribution system, method for controlling content transmission device, method for controlling content playback device, control program, and recording medium

Playback device, control method for playback device, generating device, control method for generating device, recording medium, data structure, control program, and recording medium recording the program

Growing community of inventors

Sakai, Japan

Yasuaki Tokumo