Canon Kabushiki Kaisha

Falk Tannhauser

Laurent Frouin

Pierre Visa

Johann Citerin

Gérald Kergourlay

Yacine El Kolli

Jean-Paul Accarie

Tristan Halna Du Fretay

Romain Bellessort

Arnaud Closset

Claude Le Dantec

Brice Le Houerou

Yacine Smail El Kolli

At least one embodiment of a method for setting camera parameters of a camera, the method comprising:

Method and system for auto-setting of cameras

At least one embodiment of a method of auto-setting a video content analysis module configured to analyse representation of predetermined targets in images of a scene captured by a video-camera, the method comprising:

Method and system for auto-setting video content analysis modules

At least one embodiment of a method for setting camera parameters of a camera, the method comprising: obtaining a first set of image characteristic values of images captured by the camera at a first lighting condition, the image characteristics being dependent on the camera parameters, at least two image characteristic values of the first set respectively corresponding to at least two different values of a same camera parameter; determining at least one second set of image characteristic values by adapting values of the obtained first set of image characteristic values from images captured by the camera at at least one second lighting condition, at least two image characteristic values of the second set respectively corresponding to at least two different values of a same camera parameter; selecting camera parameter values, based on the determined at least one second set of image characteristics; and modifying settings of the camera as a function of the selected values.

A method of setting values of camera settings of a camera, the method comprising determining a plurality of sets of objective image parameters values of images captured by the camera, the value of at least one camera setting being different for each set of objective image parameters; obtaining a trade-off value; determining for each set of objective image parameters values, a quality value and a resource consumption value; determining a value of the at least one camera setting optimizing a trade-off between the quality and the resource consumption according to the trade-off value based on the determined quality values and resource consumption values; and setting the value of the at least one camera setting to the determined value.

A method for constructing a region of interest from images representing a same scene, the region of interest being used for setting the camera used to obtain the images and/or to process images obtained from the camera, the method including obtaining a plurality of images representing a same scene; detecting predetermined targets in images of the plurality of images; segmenting an area corresponding to the images of the plurality of images into portions of image, each of the portions being associated with a relevance indication for the corresponding portion to be selected as part of a region of interest; selecting at least one relevant portion among the portions, as a function of the relevance indications; upon detecting selection of a relevant portion, updating the relevance indication associated with relevant portions different than the selected relevant portions, as a function of the selected relevant portions; and constructing a region of interest based on the selected relevant portions.

Method and system for improving construction of regions of interest

An image processing device processes a first sub-image of an image split into sub-images. Each sub-image is displayable by a display device. The image processing device is associated with a first display device and connects to a source device through a first network and to another image processing device through a second network. The image processing device includes first and second receiving units and a generating unit. The first receiving unit receives the first sub-image from the source device via the first network. The second receiving unit receives, via a second network, at least one part of at least one second sub-image to be displayed by another display device, wherein the received at least one part is adjacent to the received first sub-image. The generating unit generates a first clustered sub-image to be displayed by the first display device, based on the received first sub-image and adjacent part.

Image processing methods, and image processing devices and system for a scalable multi-projection system

The invention relates to a method for allocating at least one identifier known as routing identifier to at least one bridge () of a network (), the said bridge comprising at least two interconnection equipment () a first () of which is connected to at least one first part () of the said network, characterized in that each one of the interconnection equipment of the said bridge being in a 'state' determined by reference to the allocation of an identifier to this interconnection equipment, the said method includes the following steps: determination () of at least one 'state' which corresponds to the &#x201c;state&#x201d; of the said at least one second interconnection equipment of the said bridge, deciding () as to the allocation of an identifier to the at least one first interconnection equipment of the said bridge as a function of the said at least one determined &#x201c;state&#x201d;.

Method and device for allocating at least one routing identifier to at least one bridge in a network

A protocol data unit switching implements switching means used for the selective interconnection of a transmitter port and at least one receiver port selected from among at least two receiver ports by means of at least one internal bus, each of the protocol data units being constituted by at least one piece of elementary data. The switching implements a synchronization mechanism defining time slots, known as connection cycles, on at least one of said internal buses; a mechanism for the allocation of at least one of said connection cycles to each of the selected receiver ports; and a mechanism for the writing of at least one piece of elementary data in the allocated connection cycle or cycles so as to enable the broadcasting of elementary data to said selected receiver ports.

Device and method for transmission in a switch

Disclosed is a method for the broadcasting of a data packet, called a broadcast packet, within a switched network comprising a plurality of nodes connected to one another by a plurality of links, said broadcast packet being broadcast along a spanning tree of the network. Each node is of the type used to send said broadcast packets simultaneously on several links. The method comprises a step for the calculation of said spanning tree that consists in minimizing the number of links per node included in said spanning tree.

Method for the broadcasting of a data packet within a switched network based on an optimized calculation of the spanning tree

The invention relates to a method of data-packet transmission from a first network to a second network, one of the networks being a communications bus transporting data packets of isochronous and asynchronous types, characterised in that, with the other network being a packet-switching network, the said method includes, performed within a communications device connected to the communications bus and forming part of the packet-switching network, a step of reserving resources adapted to the types of data packets intended for the second network.

Method and device for communicating between a first and a second network

The invention relates to a method for allocating at least one identifier known as routing identifier to at least one bridge of a network, the bridge comprising at least two interconnection equipment a first of which is connected to at least one first part of the said network, characterized in that each one of the interconnection equipment of the said bridge being in a 'state' determined by reference to the allocation of an identifier to this interconnection equipment, the method includes the steps of determination of at least one 'state' which corresponds to the &#x201c;state&#x201d; of the at least one second interconnection equipment of the bridge, and deciding as to the allocation of an identifier to the at least one first interconnection equipment of the bridge as a function of the at least one determined &#x201c;state&#x201d;.

Method and device for assigning at least one routing identifier to at least one bridge in a network

Method and device for controlling the synchronization between two serial communication buses of a network

In the digital communication systems, devices and methods described, a transmission medium is shared by means of service messages indicating to each digital communication device whether or not that device is authorized to send on the medium once the medium is free after the service message. Certain of these messages are collective authorization-to-send messages indicating to a group of communication devices that each is authorized to send by return. When such a collective message is sent, each receiving device, when attempting to send on the medium, determines whether or not it may send in return, in accordance with a preset rule which preferably involves a random ballot.

Transmission medium sharing utilizing service messages and random ballot, and method, device and systems utilizing same

A system for sending sequences of data to be transmitted includes inputting data sequences to be transmitted and repeating data sequences to be transmitted. Data sequences referred to as 'key sequences' which provide a key sequence for each data sequence to be transmitted coming from the input or from the repetition are selected independently of the data and the data sequence to be transmitted. The key sequences are different for data sequences to be transmitted which are separated by at least a predetermined number of other data sequences to be transmitted. Each data sequence to be transmitted is combined with the key sequence corresponding thereto in order to provide a sequence of processed data. Finally, frames successively representing each processed data sequence are sent.

Growing community of inventors

Rennes, France

Falk Tannhauser