Abstract: The invention in particular relates to the hybrid tracking of representations of objects in a sequence of images using at least one key image. After acquiring a first and second images including a representation of the tracked object, a first image portion is identified in the first image, and a second image portion is retrieved from the key image. A relative pose of a first image portion of said second image, similar to the first image portion of the first image, is estimated. A second image portion of the first or second image, similar to the second image portion of the key image, is sought. The relative pose of the object is then estimated according to the relative poses of the first image portions and the second image portions.

Abstract: Systems and devices for augmenting a real scene in a video stream are disclosed herein.

Abstract: Methods, systems and devices for augmenting a real scene in a video stream are disclosed herein.

Abstract: The invention relates to a method and devices for enabling a user to visualize a virtual model in a real environment. According to the invention, a 2D representation of a 3D virtual object is inserted, in real-time, into the video flows of a camera aimed at a real environment in order to form an enriched video flow. A plurality of cameras generating a plurality of video flows can be simultaneously used to visualize the virtual object in the real environment according to different angles of view. A particular video flow is used to dynamically generate the effects of the real environment on the virtual model. The virtual model can be, for example, a digital copy or virtual enrichments of a real copy. A virtual 2D object, for example the representation of a real person, can be inserted into the enriched video flow.

Abstract: The invention relates to a method and a device for determining the exposure of a three-dimensional object in an image, characterised in that it comprises the following steps: acquiring a three-dimensional generic model of the object, projecting the three-dimensional generic model according to at least one two-dimensional representation and associating to each two-dimensional representation an exposure information of the three-dimensional object, electing and positioning a two-dimensional representation onto the object in said image, and determining the three-dimensional exposure of the object in the image from at least the exposure information associated with the selected two-dimensional representation.

Abstract: A particular subject of the invention is a method for generating a textured representation of a real object in a system comprising a data processing device linked to an image acquisition device. After receiving (310) a first image representing said real object in a given pose and after obtaining (320, 325, 330, 335) a second image representing said real object in a pose identical to said given pose, said second image being representative of the transparency of said real object in said given pose, said textured representation is generated (340) by combining said first and second images.

Abstract: The invention relates to a method and a device for creating at least two key images each including an image representing at least one three-dimensional object in a three-dimensional environment, and the exposure of the object in said environment from the viewpoint of the associated image, said method being characterized in that it comprises the following steps: acquiring a first image representing the object in a a predetermined initial position; creating a first key image from the first acquired image and the relative exposure of the least one second image representing said object, the viewpoint of at least one said second image being different from the viewpoint of said first image; determining the relative exposure of the object in its environment based on the difference between the viewpoints of the first image and at least one said second image, each of said viewpoints being determined relative to a position and an orientation; and creating a second key image based on said at least one acquired second im

Abstract: A particular subject of the invention is the creation of three-dimensional representations from real models having similar and predetermined characteristics, using a system comprising a support suitable for receiving such a real object, configured to present the object in a pose similar to that of use of said at least one real object, an image acquisition device configured to obtain at least two distinct images of the real object from at least two separate viewpoints and a data processing device configured to receive these images, to clip a representation of the real object in each of these images in order to obtain at least two textures of the real object, obtaining a generic three-dimensional model of the real object and creating a three-dimensional model of the real object from the textures and the generic three-dimensional model obtained.

Abstract: Systems and devices for augmenting a real scene in a video stream are disclosed herein.

Abstract: Methods, systems and devices for augmenting a real scene in a video stream are disclosed herein.

Abstract: Methods and devices for the real-time tracking of an object in a video stream for an augmented-reality application are disclosed herein.

Abstract: Methods and devices for the real-time tracking of one or more objects of a real scene in a video stream for an augmented-reality application are disclosed herein.

Abstract: Methods and devices for the real-time tracking of an object in a video stream for an augmented-reality application are disclosed herein.

Abstract: The invention relates to a method and to devices for the real-time tracking of one or more substantially planar geometrical objects of a real scene in at least two images of a video stream for an augmented-reality application. After receiving a first image of the video stream (300), the first image including the object to be tracked, the position and orientation of the object in the first image are determined from a plurality of previously determined image blocks (320), each image block of said plurality of image blocks being associated with an exposure of the object to be tracked. The first image and the position and the orientation of the object to be tracked in the first image define a key image. After receiving a second image from the video stream, the position and orientation of the object to be tracked in the second image are evaluated from the key image (300). The second image and the corresponding position and orientation of the object to be tracked can be stored as a key image.

Abstract: The invention in particular relates to the hybrid tracking of representations of objects in a sequence of images using at least one key image. After acquiring a first and second images including a representation of the tracked object, a first image portion is identified in the first image, and a second image portion is retrieved from the key image. A relative pose of a first image portion of said second image, similar to the first image portion of the first image, is estimated. A second image portion of the first or second image, similar to the second image portion of the key image, is sought. The relative pose of the object is then estimated according to the relative poses of the first image portions and the second image portions.

Abstract: The invention relates in particular to the detection of interactions with a software application according to a movement of an object situated in the field of an image sensor. After having received a first and a second image and having identified a first region of interest in the first image, a second region of interest, corresponding to the first region of interest, is identified in the second image. The first and second regions of interest are compared and a mask of interest characterizing a variation of at least one feature of corresponding points in the first and second regions of interest is determined. A movement of the object is then determined from said mask of interest. The movement is analyzed and, in response, a predetermined action is triggered or not triggered.

Abstract: The invention relates to a method and devices for enabling a user to visualise a virtual model in a real environment. According to the invention, a 2D representation of a 3D virtual object is inserted, in real-time, into the video flows of a camera aimed at a real environment in order to form an enriched video flow. A plurality of cameras generating a plurality of video flows can be simultaneously used to visualise the virtual object in the real environment according to different angles of view. A particular video flow is used to dynamically generate the effects of the real environment on the virtual model. The virtual model can be, for example, a digital copy or virtual enrichments of a real copy. A virtual 2D object, for example the representation of a real person, can be inserted into the enriched video flow.

Abstract: The invention relates to a method and to devices for the real-time tracking of one or more substantially planar geometrical objects of a real scene in at least two images of a video stream for an augmented-reality application. After receiving a first image of the video stream (300), the first image including the object to be tracked, the position and orientation of the object in the first image are determined from a plurality of previously determined image blocks (320), each image block of said plurality of image blocks being associated with an exposure of the object to be tracked. The first image and the position and the orientation of the object to be tracked in the first image define a key image. After receiving a second image from the video stream, the position and orientation of the object to be tracked in the second image are evaluated from the key image (300). The second image and the corresponding position and orientation of the object to be tracked can be stored as a key image.

Abstract: The invention relates to a method for determining the arrangement of a video capturing means in the capture mark of at least one virtual object in three dimensions, said at least one virtual object being a modelling corresponding to at least one real object present in images of the video image flows. The inventive method is characterised in that it comprises the following steps: a video image flow is received from the video capturing means; the video image flow received and at least one virtual object flow are displayed; points of said at least one virtual object are paired up, in real-time, with corresponding points in the at least one real object present in images of the video image flows; and the arrangement of said video capturing means is determined according to the points of the at least one virtual object and the paired point thereof in the at least one real object present in the images of the video image flows.

Abstract: The invention relates to a method and devices for imbedding, in at least one so-called first image of an image stream representing a real scene (120), at least one so-called second image extracted from at least one three-dimensional representation of at least one virtual object. After acquiring said at least one first image of said image stream (210), information for determining the position and the orientation of said at least one virtual object in said real scene using position data from said real scene are received (210, 214), a portion at least of this data being received from at least one sensor (135?, 135?) in the real scene, while other data can be determined by analysis of the first image. Said at least one second image is extracted from the three-dimensional representation of said at least one virtual object according to the orientation of said at least one virtual object.