Abstract: The present disclosure relates to methods, apparatus or systems for inciting a user consuming an immersive content to rotate the immersive rendering device in the direction of a region of interest. According to the present principles, an object representative of a character is inserted in the field of view of the user. The character is computed in a way it looks in the direction of the region of interest from its location in the immersive content. In addition, face and body attitude of the character may reflect an emotion that is associated with the region of interest, for example scare, happiness or interest. The user will naturally be incited at looking in the direction indicated by the inserted character.

Abstract: The present disclosure relates to methods, apparatus or systems for inciting a user consuming an immersive content to rotate the immersive rendering device in the direction of a region of interest. According to the present principles, an object representative of a character is inserted in the field of view of the user. The character is computed in a way it looks in the direction of the region of interest from its location in the immersive content. In addition, face and body attitude of the character may reflect an emotion that is associated with the region of interest, for example scare, happiness or interest. The user will naturally be incited at looking in the direction indicated by the inserted character.

Abstract: The present disclosure relates to methods, apparatus or systems for inciting a user consuming an immersive content to rotate the immersive rendering device in the direction of a region of interest. According to the present principles, an object representative of a character is inserted in the field of view of the user. The character is computed in a way it looks in the direction of the region of interest from its location in the immersive content. In addition, face and body attitude of the character may reflect an emotion that is associated with the region of interest, for example scare, happiness or interest. The user will naturally be incited at looking in the direction indicated by the inserted character.

Abstract: A method of tracking an object in a sequence of panoramic images and an apparatus and a computer program code suitable for implementing the method are described. For obtaining a current position of an object in a current panoramic image of a sequence of panoramic images, first an initial 2D position of the object in a preceding panoramic image is obtained. The initial 2D position is then projected back into 3D space to obtain an initial 3D position. Then a set of candidate 3D motion vectors is obtained based on the initial 3D position. The initial 3D position is subsequently motion compensated using this set of candidate 3D motion vectors to obtain a set of motion compensated 3D positions. The motion compensated 3D positions are then projected into a set of candidate 2D positions.

Abstract: The present disclosure relates to methods, apparatus or systems for inciting a user consuming an immersive content to rotate the immersive rendering device in the direction of a region of interest. According to the present principles, an object representative of a character is inserted in the field of view of the user. The character is computed in a way it looks in the direction of the region of interest from its location in the immersive content. In addition, face and body attitude of the character may reflect an emotion that is associated with the region of interest, for example scare, happiness or interest. The user will naturally be incited at looking in the direction indicated by the inserted character.

Abstract: The present disclosure relates to a method for selecting at least one item, from a plurality of items described by a plurality of attributes, accounting for a value and a weighting factor assigned to one of the attributes. According to at least one embodiment, the same weighting factor is assigned to the values of the same attribute for each of the items, and the method comprises: -adjusting one of the weighting factors according to an adjustment element received by a communication terminal; -selecting one of the items accounting for the adjusted weighting factor.

Abstract: The invention relates to a method for bounding an object in a video sequence Fx,y,t. The method includes obtaining a subset of pixels located in the object to annotate, in each frame of the video sequence. Spatio-temporal slicing is performed on the video sequence Fx,y,t, centered on the obtained subsets of pixels, resulting in a first image Fy,t obtained by an horizontal concatenation of first slices, comprising the obtained subsets of pixels, and resulting in a second image Fx,t obtained by a vertical concatenation of second slices. A trajectory of the obtained subsets of pixels is displayed on both the first Fy,t and second Fx,t image. A bounding form around the object to annotate is obtained out of four points in each frame of the video sequence, wherein the coordinates of the four points of a frame t are obtained from the coordinates of the points located in the first and second boundary of the first and second image for that frame t.

Abstract: The present invention relates to a method for navigating over documents represented by identifiers displayed on a navigation menu. Each document is associated with a plurality of numerical values characterizing it according to a plurality of criteria. Each identifier of a document is placed at a position dependent on a part of the parameter values associated with this document. The whole set of the documents is subdivided into a given number of regions. The sums of the values associated with all the documents of a region and corresponding to a certain number of criteria are virtually equal for each region. The outer contour of the regions is displayed so as to enable its selection. The selection of a region triggers the display in full screen mode of all of the identifiers of the selected region. The invention also relates to a display device capable of executing the navigation method.

Abstract: The present disclosure relates to a method for annotating a content element of a video stream which has been at least partially received by an electronic device, said method being implemented by said electronic device during a restitution of said video stream.

Abstract: The invention concerns a device for multimedia data retrieval. The multimedia data is associated with an active component. The device for multimedia retrieval being characterized in that, depending on an external event, some of the active components trigger an action that make the user aware of the multimedia data associated with said active components.

Abstract: The invention relates to a method for bounding an object in a video sequence Fx,y,t. The method includes obtaining a subset of pixels located in the object to annotate, in each frame of the video sequence. Spatio-temporal slicing is performed on the video sequence Fx,y,t, centered on the obtained subsets of pixels, resulting in a first image Fy,t obtained by an horizontal concatenation of first slices, comprising the obtained subsets of pixels, and resulting in a second image Fx,t obtained by a vertical concatenation of second slices. A trajectory of the obtained subsets of pixels is displayed on both the first Fy,t and second Fx,t image. A bounding form around the object to annotate is obtained out of four points in each frame of the video sequence, wherein the coordinates of the four points of a frame t are obtained from the coordinates of the points located in the first and second boundary of the first and second image for that frame t.

Abstract: The invention concerns a device for multimedia data retrieval. The multimedia data is associated with an active component. The device for multimedia retrieval being characterized in that, depending on an external event, some of the active components trigger an action that make the user aware of the multimedia data associated with said active components.

Abstract: The invention concerns a device for multimedia data retrieval, said multimedia data being associated with an active component, said device being characterized in that, depending on an external event, some of the active components trigger an action that make the user aware of the multimedia data associated with said active components.

Abstract: A method for retrieving a media file from a media rendering device with an initial set of media files stored in the device. Each media file has attributed feature values stored in the device and is associated to a graphical element displayed on a display. The position of each graphical element on the display depends on a multitude of the feature values of the associated media file.

Abstract: A method and an apparatus for generating an explanation for a recommendation based on the content of a recommended multimedia content item and a multimedia content item forming the basis for the recommendation are described. Concepts associated to the recommended multimedia content item are compared with vertices of a directed graph to associate the recommended item to a first vertex of the directed graph. The vertices of the directed graph represent concepts derived from one or more knowledge bases. Then a multimedia content item that has been previously accessed by the user is selected. Concepts associated to this previously accessed multimedia content item are compared with vertices of the directed graph to associate the previously accessed multimedia content item to a second vertex of the directed graph. Subsequently a path between the first vertex of the directed graph and the second vertex of the directed graph is determined using edges of the directed graph.

Abstract: A method for retrieving a media file from a media rendering device with an initial set of media files stored in the device. Each media file has attributed feature values stored in the device and is associated to a graphical element displayed on a display. The position of each graphical element on the display depends on a multitude of the feature values of the associated media file.

Abstract: Before the transmission of the source color values of the images of each group Gk of images of this sequence, a partial color transform LUT related to this group Gk is generated, then transmitted, —and, a resultant color transform LUT related to said group Gk is reconstructed by combining the transmitted partial color transform look up table of this group Gk with, if any, all the other partial color transform look up tables that have been previously transmitted, —then each images of said group are color transformed using this LUT. The invention allows a good precision of color transformation with a limited bandwidth.

Abstract: The present invention relates to a method for navigating over documents represented by identifiers displayed on a navigation menu. Each document is associated with a plurality of numerical values characterizing it according to a plurality of criteria. Each identifier of a document is placed at a position dependent on a part of the parameter values associated with this document. The whole set of the documents is subdivided into a given number of regions. The sums of the values associated with all the documents of a region and corresponding to a certain number of criteria are virtually equal for each region. The outer contour of the regions is displayed so as to enable its selection. The selection of a region triggers the display in full screen mode of all of the identifiers of the selected region. The invention also relates to a display device capable of executing the navigation method.

Abstract: The viewing conditions sensing device comprises an image sensing device and is able to output target viewing conditions under which the image display device displays images. Then, a color appearance adaptation module transform reference colors of images delivered under reference viewing conditions into target colors under target viewing conditions, according to a color appearance model, as the CIECAM, differentiating a display field from a surround field. According to the invention, the viewing conditions sensing device further comprises identifying means adapted for identifying, within the sensing images, the contour of the display field. The background and the surround are therefore better connected and the CIECAM model can be implemented more efficiently.

Abstract: The invention concerns a method and a device to determine a descriptor for a signal representing a multimedia item. The method comprises the step of applying to said signal a first bank of directional filters in order to obtain a first set of coefficients. According to the invention the method comprises the steps of: applying to said signal a second bank of filters in order to obtain a second set of coefficients representing the low-pass filtered signal, calculating a descriptor representing said multimedia element by making the difference between said first set of coefficients and said second set of coefficients and calculating associated power of said difference. Application to the classification and retrieval of multimedia items.