Nintendo Co., Ltd.

Mobiclip

Nintendo European Research and Development Sas

Actimagine

Nintendo European Research and Development

Alexandre Delattre

Théo Charvet

Jérôme Larrieu

Raphaël Poncet

Edouard Gomez

Mickaël Corroyer

Sylvain Gaeremynck

A symbol sequence is entropy-encoded using a table of symbol occurrences, and an integer value f is used to encode the table of symbol occurrences. The integer value f is used to adaptively decode the table of symbol occurrences, including (i) decoding each entry of a cumulative table of symbol occurrences by successively subdividing decoding ranges of the cumulative table of symbol occurrences at their respective middle indexes and, for each decoding range: calculating, from decoded entries of the cumulative table of symbol occurrences, an entry at a first index+f mod(an entry at a last index−the entry at the first index+1) to decode an entry at the respective middle index of the decoding range, and calculating f div(the entry at the last index−the entry at the first index+1) to update f; (ii) calculating the table of symbol occurrences from the decoded entries of the cumulative table of symbol occurrences; and applying the decoded table of symbol occurrences to entropy-decode the received encoded symbol sequence.

Compressing entropy tables with interpolative coding

A computer system is provided for converting images through use of a trained neural network. A source image is divided into blocks and context data is added to each pixel block. The context blocks are split into channels and each channel from the same context block is added to the same activation matrix. The action matrix is then executed against a trained neural network to produce a changed activation matrix. The changed activation matrix is then used to generate a converted image.

Systems and methods for machine learned image conversion

The provided solution makes it possible to select one item from a set of items, a multicomponent score being associated with each item of the set of items. After having computed a value characterising a relation ranking between a first item of the set of items and a second item of the set of items, the computed value being computed as a function of a plurality of score components associated with the first and second item of the set of items, respectively, the first item or of the second item is selected based on the computed value.

Method and device for refining selection of items as a function of a multicomponent score criterion

The provided solution is an optical system comprising an image sensor and a collecting entrance lens having a predetermined field of view, the optical device further comprising a dynamically configurable light barrier having at least two masking elements, the dynamically configurable light barrier being configured so that only one of the masking elements can be set in a state in which light passes through, the at least two masking elements being configured so that images acquired by the image sensor when one of the at least two masking elements is configured in a state in which light passes through represent different portions of the predetermined field of view than images acquired by the image sensor when another one of the at least two masking elements is configured in a state in which light passes through.

Method and device for increasing resolution of an image sensor

The present invention concerns the field of stereoscopic vision systems and more particularly the management of the position of the focal plane in a stereoscopic scene. The invention aims to propose a method for managing the focal plane within a stereoscopic image or a sequence of stereoscopic images. A translation of the right and left images is effected in order to place the focal plane in front of the scene viewed. Advantageously, the depth of the major objects of the scene is estimated by a division of the images into a plurality of zones and estimation of the depth of each of the zones. The depth of the focal plane is then calculated so that most of the scene is behind the focal plane.

Device and method for managing the position of the focal plane in a stereoscopic scene

The present invention concerns the field of stereoscopic photography devices and more precisely calibration thereof. The invention proposes a method for calibrating a stereoscopic photography device that calculates a set of correction parameters for the images. These parameters are classed according to an order of importance. The first-order correction parameters are estimated first, the second-order correction parameters secondly. Advantageously, the first-order parameters are refined by taking account of the estimation values of the second-order parameters. Advantageously, a measurement of the relevance of the scene is carried out before the actual calibration.

Method for calibrating a stereoscopic photography device

The present invention relates to the field of video compression and, specifically, to controlling the bit rate of the generated compressed sequence. This invention relates to a method for constant bit rate compression, using a step of normalizing the compression ratio. Variations in said ratio can thus be smoothed out, eliminating sudden variations in image quality in the resulting sequences. The perceived quality of the service is thereby improved.

Method and device for compressing a video sequence

Audio encoding method and device comprising the transmission, in addition to the data representing a frequency-limited signal, of information relating to a temporal filter that can be applied to the entire broadened signal, both in its transmitted low-frequency part and in its reconstituted high-frequency part. The application of this filter allowing the reshaping the reconstituted high-frequency part and the correction of compression artifacts present in the transmitted low-frequency part. In this way, the application of the temporal filter, simple and inexpensive, to all or part of the reconstituted signal, makes it possible to obtain a signal of good perceived quality.

Audio encoding method and device

Audio encoding method and device comprising the transmission, in addition to the data representing a frequency-limited signal, of information relating to a temporal filter that is to be applied to the entire enhanced signal, both in its transmitted low-frequency part and in its reconstituted high-frequency part. The application of this filter for reshaping the reconstituted high-frequency part and the correction of compression artefacts present in the transmitted low-frequency part. In this way, the application of the temporal filter, simple and inexpensive, to all or part of the reconstituted signal, makes it possible to obtain a signal of good perceived quality.

The process of compression of a block of a size L.times.H of a sequence of images comprises, in a repetitive manner, for said block: a search step, in one of the images of the sequence of images, for the zone L.times.H pixels the most similar to said block; a step of determining whether the resemblance between said zone and said block responds to predetermined criteria; if said resemblance responds to said criteria, a step of storing the motion vector which indicates the distance between the block and the most similar zone found; if said resemblance does not respond to said criteria, and if the block does not have a predetermined minimum size, a step of cutting out said block into sub-blocks and a supplemental repetition, for each of said sub-blocks, and if said resemblance does not respond to said criteria, and if the block has a predetermined minimum size, a step of storing the block in the course of which the block is compressed without reference to a reference image.

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Viroflay, France

Alexandre Delattre