Fujitsu Corporation

Yasuo Misuda

Kazuhiro Yamashita

Yousuke Yamaguchi

Yosuke Takabayashi

Yoshihiro Tomita

Shunsuke Kobayashi

Yasushi Umezaki

Noriaki Tsukuda

Shotaro Ishikawa

Takahiro Kobayakawa

Chikara Imajo

Takafumi Kamito

Ayana Tanaka

Yuuji Nomura

A non-transitory computer-readable storage medium storing an encoding processing program that causes a computer to execute a process, the process including acquiring image feature information of each of a plurality of image regions obtained by partitioning first image data and image feature information of each of the plurality of image regions obtained by partitioning second image data, determining, for each of the plurality of image regions, whether image feature information of the first image data and image feature information of the second image data have a correlation greater than or equal to a certain value, and coding a specified image region of the second image data which has the correlation, the coding being performed by using coding unit used for coding of an image region of the first image data whose position corresponds to the specified image region of the second image data.

Non-transitory computer-readable storage medium, encoding processing method, and encoding processing apparatus

A prefetched-image memory stores a prefetched image of a prefetched area prefetched from a reference image memory that stores a reference image. A processor performs a motion search using a reduced image obtained by reducing an encoding target image and generates a search result for an encoding target block included in the encoding target image. The processor determines, based on the search result, that an area situated outside the prefetched area in the reference image is to be searched when the processor has predicted from the search result that a matching of the encoding target block and the prefetched image will be unsuccessful. Next, the processor performs a matching of the encoding target block and an image of a matching target area including the outside area in the reference image and generates an inter-prediction result. Then, the processor encodes the encoding target block based on the inter-prediction result.

Image compressing device and image compressing method

A video data processing device includes: a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute: making, on the basis of first key frames obtained by encoding images in frames included in moving image data, difference frames in each of which a partial image different from an image in a frame corresponding to each first key frame is encoded; and generating, if the number of generated difference frames reaches a first number, in response to detection that a difference between a difference frame generated thereafter and a difference frame preceding in time to the difference frame generated thereafter is not larger than a given value, a second key frame distinguished from the first key frames and obtained by encoding an image in the frame.

Video data processing device and method

At the time of an encoding process, a video elementary stream is generated and output by capturing and encoding a video image signal at a time interval of a video frame synchronous with a timing of a video synchronization signal, and an audio elementary stream is generated by capturing and encoding an audio signal at each audio interval. An audio packetized elementary stream where one packet has a stream length corresponding to the time interval of the video frame is multiplexed with the audio elementary stream, and the stream is output.

Elementary stream multiplexing method, multiplexing system, encoding or decoding method and apparatus

A video/audio synchronization apparatus includes: a decoder configured to decode a frame contained in encoded video data and determine playback time of the frame based on a first clock signal, and decode encoded audio data and determine playback time of an associated audio signal contained in the decoded audio data and to be played back simultaneously with the frame, based on a second clock signal different from the first clock signal; a silent period detector configured to detect a silent period from within the associated audio signal; and an audio timing adjuster configured to reduce a difference between the playback time of the frame and the playback time of the associated audio signal by skipping or repeating a silent period contained within a period of the associated audio signal.

Video/audio synchronization apparatus and video/audio synchronization method

An encoding method includes encoding moving image; determining whether an information amount of the encoded moving image data in units of a picture satisfies a threshold to control a virtual buffer obtained by virtually modeling a reception buffer of a decoding device that is a transmission destination of the encoded moving image data; and setting, by dividing a picture included in the encoded moving image data, a decoding time for each divided picture to cause the decoding device to decode each divided picture when the determining determines the information amount of the encoded moving image does not satisfy the threshold to control the virtual buffer.

Encoding method, decoding method, encoder, and decoder

An image encoding device that encodes an image by performing sequential processing in units of a certain size, the image encoding device includes, a variable-length coding unit that performs variable-length coding on data to be encoded having the certain size in the image; an estimating unit that estimates the number of codes at a time after the variable-length coding using the data to be encoded at a time before the variable-length coding is performed by the variable-length coding unit; and a slice controlling unit that controls division of the image into slices on the basis of a cumulative value of the estimated number of codes.

Image encoding device encoding an image by performing sequential processing, method for encoding image, and computer-readable storage medium storing image encoding program

A moving image decoding apparatus for decoding moving image data, where the apparatus includes a receiving unit for receiving moving image data, a decoding processing unit for decoding and controlling a display of decoded data, and an output control unit for outputting image data. The decoding processing unit includes an intra-block line determination unit for selecting a macroblock line in a frame of the moving image data as an intra-macroblock line; a refresh control unit for identifying an area refreshed during one circulation of an intra-macroblock line, wherein the intra-macroblock line is made to periodically circulate in units of a macroblock line for each frame; an error detection unit for detecting a decoding error; an error judgment unit for judging whether the error is within the refreshed area; and a restore point determination unit for determining a restore point to update an image.

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Inagi, Japan

Yasuo Misuda