Abstract: The present principles relate to an architecture of a coding scheme that encodes depth images (and optionally texture images) obtained by projecting a point cloud on surfaces associated with volumes of a structure of projection. A global octree-based structure is also obtained from the point cloud and an inverse-projected point cloud obtained by inverse projecting the decoded depth images (and optionally decoded texture images).

Abstract: A method for processing a picture comprising at least one face is provided. The method comprises: —obtaining (S10) a cropping window in the picture; —processing (S18) the picture by cropping the picture part delimited by the cropping window; wherein the method further comprises detecting (S12) the at least one face, determining (S14) a weight for the detected at least one face and modifying (S16) the position of the cropping window in the picture based on the weight, wherein the weight is determined at least based on the size of the corresponding detected face.

Abstract: A method for displaying a sequence of pictures is disclosed. The sequence of picture coded as a multilayer stream comprising a base layer representative of the pictures of the sequence at a first resolution and/or first quality and at least one enhancement layer representative of the sequence pictures at a second resolution and/or second quality. The method comprises the following steps: decode the base layer from a random access point of the base layer and at least up to the decoding of a random access point of the enhancement layer to reconstruct pictures of the base layer, display the reconstructed pictures of the base layer, decode the enhancement layer from the random access point of the enhancement layer to reconstruct pictures of the enhancement layer, and display the reconstructed pictures of the enhancement layer.

Abstract: A method of cropping a 3D content comprising at least a first view and a second view is disclosed that comprises: determining a first saliency map from the first view and a second saliency map from the second view; determining a final cropping window from the first and second saliency maps; and cropping the first view and the second view according to the final cropping window.

Abstract: The present invention pertains to a method for selecting a version of a document. The user inputs an identifier of a document at the level of his receiver connected to at least one communication network, and initiates a search request to receive versions of at least one part of this document. The receiver then receives a plurality of versions of the said document. Each version received is analysed by a plurality of evaluation modules so as to calculate an evaluation value for each version received according to a predetermined criterion. The receiver selects for each of the evaluation modules a version of the document having the best evaluation in respect of this criterion, and displays the identifiers of versions having the best evaluations according to each criterion. The user can then easily select the version for reproduction thereof which best meets a criterion. The invention also relates to a receiver implementing the said method.

Abstract: A method for processing a picture comprising at least one face is provided. The method comprises:—obtaining (S10) a cropping window in the picture;—processing (S18) the picture by cropping the picture part delimited by the cropping window; wherein the method further comprises detecting (S12) the at least one face, determining (S14) a weight for the detected at least one face and modifying (S16) the position of the cropping window in the picture based on the weight, wherein the weight is determined at least based on the size of the corresponding detected face.

Abstract: Methods and apparatuses for automatic animation are suggested. An example method can include: detecting one or more regions of interest (ROIs) in an image at least partially based on saliency values of the one or more ROIs; determining a sequence of presenting the one or more ROIs; and generating an animation based on the ROIs and the sequence, wherein an animation path, along which a display area is moved between adjacent ROIs in the sequence, is determined to maximize the sum of the saliency values of the one or more ROIs along the path.

Abstract: A method of cropping a 3D content comprising at least a first view and a second view is disclosed that comprises: determining a first saliency map from the first view and a second saliency map from the second view; determining a final cropping window from the first and second saliency maps; and cropping the first view and the second view according to the final cropping window.

Abstract: The invention relates to an automatic detection method in a source image, of at least one area called a layout area comprising at least one layout, such as a logo and/or a score. According to the invention, the layout areas of a source image are detected using the salience of source image pixels. The detection is carried out in specific areas of the source image saliency map, usually in the areas corresponding to the corners of the image or to the bands in the upper part and lower part of the image. In these areas, two points are sought having maximum salience values and distant by at least p points from each other. These two points corresponding to the beginning and end of a layout area. The window bounding these two points then corresponds to a layout area.

Abstract: The invention relates to a method for determining the salience map of an audio video document. The method comprises the steps for: calculating a salience map in relation to the video part of said document, determining at least one audio descriptor representing said document, weighting the video salience map as a function of the variation of said audio descriptor.

Abstract: The present invention pertains to a method for selecting a version of a document. The user inputs an identifier of a document at the level of his receiver connected to at least one communication network, and initiates a search request to receive versions of at least one part of this document. The receiver then receives a plurality of versions of the said document. Each version received is analysed by a plurality of evaluation modules so as to calculate an evaluation value for each version received according to a predetermined criterion. The receiver selects for each of the evaluation modules a version of the document having the best evaluation in respect of this criterion, and displays the identifiers of versions having the best evaluations according to each criterion. The user can then easily select the version for reproduction thereof which best meets a criterion. The invention also relates to a receiver implementing the said method.

Abstract: The invention relates to an image processing method to generate, from a source image, an image of reduced size whose ratio between the width and the height is equal to a predetermined value, called reduced ratio. It comprises the following steps: selecting one rectangular image part in the source image, and extracting the rectangular image part to generate the reduced image. According to an essential characteristic of the method, if the ratio between the width and height of the rectangular image part, called first ratio, is not equal to the reduced ratio, the width or the height of the rectangular image part is modified before the extraction step according to values of perceptual interest associated with each pixel of the source image in such a manner that the ratio between the width and the height of the modified rectangular image part, called second ratio, is equal to the reduced ratio.

Abstract: A device for helping the capture of images is disclosed that comprises: an analyzer suitable to calculate perceptual interest data for regions of an image having to be captured, a display suitable to overlay on the image at least one graphic indicator indicating the position of at least one region of interest in the image. An image capture device comprising the device for helping the capture of images is further disclosed.

Abstract: The invention relates to an automatic detection method in a source image, of at least one area called a layout area comprising at least one layout, such as a logo and/or a score. According to the invention, the layout areas of a source image are detected using the salience of source image pixels. The detection is carried out in specific areas of the source image saliency map, usually in the areas corresponding to the comers of the image or to the bands in the upper part and lower part of the image. In these areas, two points are sought having maximum salience values and distant by at least p points from each other. These two points corresponding to the beginning and end of a layout area. The window bounding these two points then corresponds to a layout area.

Abstract: The invention relates to a method for determining the salience map of an audio video document. The method comprises the steps for: calculating a salience map in relation to the video part of said document, determining at least one audio descriptor representing said document, weighting the video salience map as a function of the variation of said audio descriptor.

Abstract: The invention relates to an image processing method to generate, from a source image, an image of reduced size whose ratio between the width and the height is equal to a predetermined value, called reduced ratio. It comprises the following steps: selecting one rectangular image part in the source image, and extracting the rectangular image part to generate the reduced image. According to an essential characteristic of the method, if the ratio between the width and height of the rectangular image part, called first ratio, is not equal to the reduced ratio, the width or the height of the rectangular image part is modified before the extraction step according to values of perceptual interest associated with each pixel of the source image in such a manner that the ratio between the width and the height of the modified rectangular image part, called second ratio, is equal to the reduced ratio.

Abstract: The invention concerns a device receiving data associated with a first profile and generating data associated with a second profile, comprising means to extract facts associated with the first profile, means to extract facts associated with the second profile, a set of rules describing a way to modify facts associated with said first profile into facts associated with said second profile, means to analyze said facts associated with the first profile and said facts associated with the second profile, means to modify facts associated with said first profile into facts associated with said second profile according to said set of rules. The device is characterized in that it comprises, means to request additional rules when said set of rules does not allow to modify facts associated with said first profile into facts associated with said second profile.

Abstract: The invention concerns a device receiving data associated with a first profile and generating data associated with a second profile, comprising means to extract facts associated with the first profile, means to extract facts associated with the second profile, a set of rules describing a way to modify facts associated with said first profile into facts associated with said second profile, means to analyze said facts associated with the first profile and said facts associated with the second profile, means to modify facts associated with said first profile into facts associated with said second profile according to said set of rules. The device is characterized in that it comprises, means to request additional rules when said set of rules does not allow to modify facts associated with said first profile into facts associated with said second profile.

Abstract: With the new plasma display panel technology new kinds of artefacts can occur in video pictures. These artefacts are commonly described as “dynamic false contour effect”, since they correspond to disturbances of gray levels and colors in the form of an apparition of colored edges in the picture when the observation point on the PDP screen moves. According to the invention, such an artefact is compensated by analyzing the pictures, and determining the pixels which need to be corrected. The digital sub-field code words of these pixels are replaced by corrected sub-field code words. Thereby, the correction sub-fields (C1, C2, C3) which are inserted in or omitted from the digital code word are selected under consideration of its position within the frame period for optimal results.

Abstract: The device for addressing a plasma panel comprising a video processing circuit (7) for processing the digital video data received, a correspondence memory (8) for transcoding these data, a video memory (9) for storing the transcoded data, the video memory being linked to column driver circuits (10) for controlling the column addressing of the plasma panel, is characterized in that the transcoded data have a greater number of bits than the digital video data received and in that the processing circuit (7) comprises means for differently coding identical values of digital video data received. The applications target plasma panel control devices.