Abstract: The invention relates to x-ray imaging technology as well as image post-processing. Particularly, the present invention relates to post-processing of perfusion image data acquired by an x-ray imaging apparatus by absolutely or relatively normalizing perfusion image data to allow a preferred comparison of the image data, both with regard to different acquisitions as well as different patients. To allow normalization of perfusion image data, it may be desirable to know the amount of contrast agent injected, which remains in a coronary. Subsequently, image parameters may be adapted or normalized based on the known amount of contrast agent within the coronary for normalization of perfusion image data. To obtain a precise amount of injected contrast agent, the injected volume of contrast agent flowing through a defined region or section of a vessel may be estimated. Said injected volume of contrast agent may thus be deduced from the estimation of the total volume flow at this location.

Abstract: The invention relates to adaptive roadmapping providing improved information to the user, comprising the following steps: providing pre-navigation image data representing at least a part of a vascular structure comprising a tree-like structure with a plurality of sub-trees; generating a vessel representation on the basis of pre-navigation image data; acquiring live image data of the object, which object comprises the vascular structure; wherein the vascular structure contains an element of interest; determining spatial relation of the pre-navigation image data and the live image data; analysing the live image data by identifying and localizing the element in the live image data; determining a sub-tree in which the element is positioned, wherein the determining is based on the localization of the element and on the spatial relation; and selecting a portion of the vascular structure based on the determined sub-tree; generating a combination of the live image data and an image of the selected portion of the vasc

Abstract: The present invention relates to 3D-originated cardiac roadmapping.

Abstract: A terminal (10) that comprises: a screen (SCR) on which graphics objects can be displayed that are suitable for being selected by a pointer device (PTR); a video projector (30) suitable for projecting an image (IM) on a remote screen (RSCR); and means for incorporating a projected graphics object (RPTR) in the projected image (IM) and representative of a pointer referred to as a “remote” pointer. The screen of the terminal includes a zone (DZ), with interaction between the pointer device (PTR) and the zone (DZ) serving to control the remote pointer (RPTR) in the projected image (IM).

Abstract: A method for processing images in interventional radioscopy for detecting guiding instrumentation equipment. The method of the invention enables objects of longilinear or very curved shapes to be detected within the radioscopic image having very low contrast to noise ratios. In one embodiment, an algorithm enables the measured contrast to noise ratio of long or curved structures in the image to be considerably improved. To do this, an embodiment of the invention uses oriented, separable, recursive and rapid steerable detection filters. Said detection filters have a low calculation cost, even for long filters having several orientations.

Abstract: A process and system for improving a digital image of an object defined by pixels, acquired at the instant t and generated from an X-ray detector receiving X-rays emitted by a source. The process includes: determining a predicted image of the object at the instant t as a function of the images of the object acquired at the instants t?i, i being a positive whole number greater than or equal to 1, and moving of each of the layers constituting the image acquired at the instant t, the number of layers being previously fixed and the moving of each of the layers being previously determined; and generating a visualized image corresponding to a weighted sum of the predicted image and the image of the object acquired at the instant t, so as to attenuate the noise of the image of the object acquired at the instant t.

Abstract: A method for the processing of images in interventional radioscopy to produce a sequence of de-noised images in which elongated objects of guiding instrumentation equipment are preserved and enhanced. The method of the invention uses a tool for indicating the confidence to be placed in a given pixel as regards its belonging to a piece of guidance equipment. This tool is used to create a combination algorithm capable of re-injecting the pixels having a low contrast-to-noise ratio into the de-noised image. This combination algorithm enables the enhancement solely of the pixels of the guidance equipment with a high confidence value so as not to produce artifacts with the enhancement of false positives.

Abstract: A method and apparatus are provided for configuring a multi-network telecommunications terminal, which communicates with a number of telecommunications networks offering a plurality of telecommunications services. The terminal includes a plurality of interfaces for accessing the services offered. When the terminal accesses one of the services offered, via one of the networks, the following steps are performed: a) determining the type of network with which the terminal is in the process of connecting, b) activating the access interface associated with the service which the terminal is intended to access, c) requesting, at the level of the activated access interface, configuration parameters which are dependent on the activated access interface and the network in the process of connection, d) extracting, at the level of a module for centralizing configuration parameters, the requested configuration parameters, e) obtaining, at level of the activated access interface, the extracted configuration parameters.

Abstract: A system for data exchange in a multimedia terminal, said terminal comprising native applications (2) executable directly by the terminal and local applications (4) and also remote applications (6) executable through Internet browser software (8). This system comprises a module (18) for detecting the operation of applications (4, 6) that are executable through Internet browser software, a downlink interface (10A) for data exchange between the applications (4, 6) that are executable through Internet browser software and the native applications and an uplink interface (10B) for data exchange between the native applications and the local applications, said detecting module and said downlink and uplink interfaces being adapted for exchanging data.

Abstract: A method and apparatus for reduction of noise in an image of a sequence of fluoroscopic images of an object in motion having a differentiation of the pixels of the image between pixels in motion and fixed pixels, and a processing wherein a time filtering operation of the fixed pixels. For each pixel of the image, the differentiation between a pixel in motion and a fixed pixel is performed as a function of the result of a detection of motion during which, in a zone of the image covering a set of pixels in the vicinity of the pixel, the existence or respectively the absence of motion of the object relative to a preceding image is detected.

Abstract: A method and apparatus are provided for configuring a multi-network telecommunications terminal, which communicates with a number of telecommunications networks offering a plurality of telecommunications services. The terminal includes a plurality of interfaces for accessing the services offered. When the terminal accesses one of the services offered, via one of the networks, the following steps are performed: a) determining the type of network with which the terminal is in the process of connecting, b) activating the access interface associated with the service which the terminal is intended to access, c) requesting, at the level of the activated access interface, configuration parameters which are dependent on the activated access interface and the network in the process of connection, d) extracting, at the level of a module for centralizing configuration parameters, the requested configuration parameters, e) obtaining, at level of the activated access interface, the extracted configuration parameters.

Abstract: A method for the processing of images in interventional radioscopy to produce a sequence of de-noised images in which elongated objects of guiding instrumentation equipment are preserved and enhanced. The method of the invention uses a tool for indicating the confidence to be placed in a given pixel as regards its belonging to a piece of guidance equipment. This tool is used to create a combination algorithm capable of re-injecting the pixels having a low contrast-to-noise ratio into the de-noised image. This combination algorithm enables the enhancement solely of the pixels of the guidance equipment with a high confidence value so as not to produce artifacts with the enhancement of false positives.

Abstract: A method for processing images in interventional radioscopy for detecting guiding instrumentation equipment. The method of the invention enables objects of longilinear or very curved shapes to be detected within the radioscopic image having very low contrast to noise ratios. In one embodiment, an algorithm enables the measured contrast to noise ratio of long or curved structures in the image to be considerably improved. To do this, an embodiment of the invention uses oriented, separable, recursive and rapid steerable detection filters.

Abstract: A method and apparatus are provided for modifying a service mode requested by a communication and/or broadcasting terminal. The terminal is connected to a communication network with a variable quality of service. The terminal executes at least the following steps, prior to transmitting at least some of its requests: selecting a new identifier value of the desired service mode; and integrating in the content of the request to be transmitted, the identifier value of said desired service mode, such that the signals required by the terminal are adapted to a format corresponding to the identifier value contained in the request.

Abstract: A method and apparatus for reduction of noise in an image of a sequence of fluoroscopic images of an object in motion having a differentiation of the pixels of the image between pixels in motion and fixed pixels, and a processing wherein a time filtering operation of the fixed pixels. For each pixel of the image, the differentiation between a pixel in motion and a fixed pixel is performed as a function of the result of a detection of motion during which, in a zone of the image covering a set of pixels in the vicinity of the pixel, the existence or respectively the absence of motion of the object relative to a preceding image is detected.

Abstract: A process and system for improving a digital image of an object defined by pixels, acquired at the instant t and generated from an X-ray detector receiving X-rays emitted by a source. The process includes: determining a predicted image of the object at the instant t as a function of the images of the object acquired at the instants t-i, i being a positive whole number greater than or equal to 1, and moving of each of the layers constituting the image acquired at the instant t, the number of layers being previously fixed and the moving of each of the layers being previously determined; and generating a visualized image corresponding to a weighted sum of the predicted image and the image of the object acquired at the instant t, so as to attenuate the noise of the image of the object acquired at the instant t.

Abstract: The invention concerns a method for inter-person contacting allowing a communication to be set up between at least two users (client1, client2) at the request of one thereof, by using a presence status of each user, characterized in that said method comprises a contact request step (E1) in which a user parameters at least one contacting action between said user and at least one other user, and a step (E6) for automatic activation of said contacting action in accordance with the parameters set by said user when the presence status associated with the users concerned by said contacting action allows contacting to be made.

Abstract: The invention relates to a method of filtering messages in an instant messaging server comprising a main instant messaging module connected to an information base containing instant messaging clients' contact lists with associated filtering rules, said method comprising the following steps: a) a first instant messaging client sending a messaging whereof the addressee is a second instant messaging client; b) consulting the contact list of the second instant messaging client to verify if filtering of messages from the first instant messaging client is specified in said list; c) in the event of positive verification, replacing the addressee of the message by a third instant messaging client and forwarding the message to that third instant messaging client; or d) in the event of negative verification, sending the message to the second instant messaging client.