Canon Kabushiki Kaisha

Hideaki Hattori

Masato Shima

Toshiyuki Fukui

An image coding apparatus which divides each of one or more image frames into a plurality of rectangular tiles according to a predetermined tile division method and encodes each tile, the image coding apparatus includes an input unit configured to input from outside, tile division information indicating a divided state of the tiles and a preview area to be used in a preview in which an image is displayed in a smaller size as compared to a size of the frame, a determination unit configured to determine from the tile division information and the preview area to be used in the preview, preview tile to be used in a preview, a generation unit configured to generate tile preview information including identification information of tiles corresponding to the determined preview tile.

Image coding apparatus, image coding method, image decoding apparatus, image decoding method, and storage medium

A method of generating a media file using a media file format in which a set of pictures including one or more pictures is coded and stored such that each picture is divided, in coding order, into two or more slices, and coded data of each slice is stored as NAL unit data, the method comprising: dividing each slice into two or more rectangular-shaped tiles and coding the two or more rectangular-shaped tiles; and providing a slice index box in the media file format such that a value indicating an ordinal position of each slice to which each tile belongs in each picture is described in the slice index box.

Method of generating media file and storage medium storing media file generation program

An image encoding apparatus includes a calculation unit configured to calculate a profile indicating a combination of processes which can be decoded by an image decoding apparatus and a level indicating a range of a parameter value which can be decoded by the image decoding apparatus, a determination unit configured to determine a number of horizontal pixels of a tile or a number of horizontal tiles with respect to a specific profile to be N or smaller (N&#x3e;0) which is a maximum number of horizontal pixels defined in advance according to the level, and to determine a number of vertical pixels of the tile or a number of vertical tiles with respect to the specific profile to be M or smaller (M&#x3e;0) which is a maximum number of vertical pixels defined in advance according to the level.

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

An image coding apparatus that codes a moving image composed of a plurality of pictures, includes a determination unit configured to define a tile set in a manner that a size of the tile set including one or more tiles obtained by dividing a picture, which corresponds to a size of the tile set at which coding can be independently performed, is set to be smaller than or equal to a predetermined size, and a coding unit configured to code the picture on the basis of the tile set defined by the determination unit.

Image coding apparatus, image coding method, and recording medium, and image decoding apparatus, image decoding method, and recording medium

An image encoding apparatus includes a first encoding unit configured to encode an N-th image of a plurality of images and a second encoding unit configured to encode an (N+1)th image, which is continuous to the N-th image, with reference to the N-th image. The processing system adaptively determines processing start timing based on a motion vector presence range of an initial processing target block of the (N+1)th image, which is a part of the N-th image.

Image encoding or decoding apparatus, system, method, and storage medium for encoding or decoding a plurality of images in parallel

A system includes a plurality of image capturing units configured to capture an object image to generate video data, a video coding unit configured to code each of the generated video data, a measurement unit configured to measure a recognition degree representing a feature of the object from each of the generated video data, and a control unit configured to control the video coding unit to code each of the video data based on the measured recognition degree.

Monitoring camera system, monitoring camera, and monitoring camera control apparatus

A selector selects one of a standard parameter corresponding to a filter strength contained in input movie image data and an original parameter originally set at the decoding side as a filter parameter to be used. A screen-display filter performs deblocking filtering using the filter parameter selected by the selector on decoded movie image data. A post-filter performs deblocking filtering using the standard parameter and stores the obtained decoded image data in a memory to allow it to be used in inter-frame compensation.

Apparatus, method, and computer-readable storage medium for decoding movie image data

An image processing method includes calculating a desirability score which indicates a desirability of the image, for each of a series of images captured in a time-sequential manner, based on a recognition result of the image, and selecting a plurality of images as best-shots in which desirability scores are a local maximum value in a time-sequence, from the series of images.

Method for selecting desirable images from among a plurality of images and apparatus thereof

This invention obtains information required to quantitatively evaluate block distortion of an image on the basis of encoded data that utilizes the compression encoding technique for respective blocks. To this end, a compression encoding unit () compression-encodes an image input from an image input unit () in accordance with an encoding parameter input from an encoding parameter input unit (). A decoding unit () generates a decoded image by decoding the compression-encoded data. A spatial differentiator () in a block distortion evaluator () makes a spatial derivative calculation of the original image data, and a spatial differentiator () makes a spatial derivative calculation of the decoded image. An evaluation information calculator () generates block distortion index information on the basis of these two derivative calculation results.

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Kawasaki, Japan

Hideaki Hattori