Fujitsu Corporation

Chikara Imajo

Akira Nakagawa

Satoshi Shimada

Akihiro Yamori

Yasuo Misuda

Koji Takata

Ayana Tanaka

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 determination device includes a memory and a processor coupled to the memory. The processor executes a process including: loading a plurality of video image signals including stereo images between which a position of an object in the stereo images differs in accordance with a parallax; performing block matching processing on the stereo images to detect a motion vector on a block-by-block basis in one of the stereo images and to calculate similarity on a block-by-block basis; determining whether to display a three-dimensional screen based on the stereo images or a two-dimensional screen, based on the motion vector or the similarity, or a combination thereof; and adding a result of the determining to the stereo images and outputting the stereo images added with the result to a display device that displays the stereo images.

Determination device and determination method

A video encoder that encodes each of a plurality of blocks obtained by dividing an input image, includes: a definition unit configured to define a valid area which is allowed to be used as reference in a reference image in interframe coding; a detection unit configured to detect a reference area in the reference image for a target block; a predicted image generation unit configured to generate a predicted image by outputting an image of the reference area for the reference area belonging to the valid area and outputting a complementary image for the reference area not belonging to the valid area; and a coding unit configured to encode the input image using the predicted image, wherein valid area information indicating the valid area is transmitted to a video decoder, for each group of a plurality of blocks.

Video encoder and decoder using region based coding and decoding techniques with sequential refresh

A method of coding (decoding) an image comprised of a pixel block divided into a plurality of sub-blocks, which method autonomously determines an order of optimal coding (decoding) adapted to a correlation between adjacent sub-blocks without providing additional information. This method pays attention to context information accompanying the image information and instructing a correlation direction between pictures and so on, sequentially predicts a reference sub-block serving the best coding (decoding) efficiency among adjacent reference sub-blocks to be referred to for the coding (decoding) based on the correlation direction, and determining the order of coding (decoding) according to this prediction.

Growing community of inventors

Fukuoka, Japan

Chikara Imajo