Abstract: A method and apparatus for processing audio content is described. The method and apparatus include receiving (510) audio content, the audio content including an input audio signal, a first reference audio signal, and a second reference audio signal, determining (550) a processing function for the input audio signal, the processing function determined based on a cost function between the input audio signal, the first reference audio signal and a second reference audio signal, and processing (560) the input audio signal using the determined processing function in order to produce an output audio signal.

Abstract: A 3D model can be modeled using “pattern-instance” representation, wherein an instance component may be represented as transformation (for example, rotation, translation, and scaling) of a pattern. To improve compression efficiency, the quantization parameters for the rotation part and translation part for transformation of an instance can be determined based on the quantization parameter used for encoding a corresponding pattern. Specifically, the quantization parameter for the rotation part may depend on the size of the instance, and the quantization parameter for the translation part may depend on the scale of translation. That is, a larger instance may use a finer quantization parameter for the rotation part. The quantization parameters are so determined that quantization errors caused by compressing the patterns, the translation part of transformation, and the rotation part of transformation are at similar levels.

Abstract: The method to enroll a certificate to a device comprises the steps of providing a management application on a management device, the management application discovering a device that needs certificate enrollment, wherein the discovery information includes a public key of the device. The management application forwards the public key of the device to a certificate enrollment server, and the device requests a certificate enrollment at the certificate enrollment server by including the public key of the device at the certificate request for a secure certificate enrollment to the device.

Abstract: A video decoder, encoder, and corresponding methods for processing video data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder includes a reference picture weighting factor unit for determining a weighting factor corresponding to the particular reference picture index; an encoder includes a reference picture weighting factor assignor for assigning a weighting factor corresponding to the particular reference picture index; and a method for decoding includes receiving a reference picture index with the data that corresponds to the image block, determining a weighting factor for each received reference picture index, retrieving a reference picture for each index, motion compensating the retrieved reference picture, and multiplying the motion compensated reference picture by the corresponding weighting factor to form a weighted motion compensated reference picture

Abstract: To compress headers efficiently, headers may be differentially encoded. In one embodiment, a difference between a current field and a reference field can be used in a reduced header. In another embodiment, the least significant bits of the current field can be used to represent the current field. When such a field is received, the most significant bits of a reference field are needed to de compress the field. In addition, the present principles determine the typical usage scenarios that may benefit from header compression and further determine that some fields can be removed in a reduced header or be represented by fewer bits. Header compression may impose constraints on the representation of the current field. The present principles recognize constraints on using reduced headers and provide rules and guidelines on applying header compression.

Abstract: Objects in an image sequence are tracked within a bounding box such that the object is assured to some extent of being contained within the bounding box. The location of the object within the bounding box is less important than knowing with some certainty that the object is within the bounding box, unlike previous methods that attempt to center an object within a bounding box. The approach, which uses histograms of image features such as color indices, is suited to applications such as zooming and is robust to occlusions, out-of-plane rotations, illumination changes and long-term tracking drift.

Abstract: A method for processing a picture is disclosed. The method according to the invention comprises: segmenting the picture into a background layer and at least another layer; selecting a background template of color harmony for the background layer; determining one template of color harmony for each of the at least another layer from the background template of color harmony depending on the distance between the background layer and said at least another layer. processing the picture by mapping the colors of each segmented layer using the corresponding template of color harmony.

Abstract: A method transmitting a video program having an initial video quality and information related to the video program to multiple devices having an initial information quality is disclosed.

Abstract: A challenge of audio watermarking systems in which an acoustic path is involved is the robustness against microphone pickup in case of surrounding noise. The strength of phase-based watermarking is increased by determining a masking threshold for a current frequency bin in a frequency/phase representation changing the phase based on that masking threshold and an allowed phase change value, calculating an allowed magnitude change value for the current frequency bin and calculating from an audio quality level value a magnitude change scaling factor for the magnitude change value, and increasing its magnitude accordingly.

Abstract: The present invention generally relates to a method and device for encoding an image. The method comprises: —encoding (12) a backlight image determined (11) from the image; —obtaining (13) a residual image by dividing the image by a decoded version of the backlight image, —obtaining (16) a tone-mapped residual image by tone-mapping the residual image; and —encoding (19) the tone-mapped residual image. The invention relates also to a method and device for decoding a bitstream representing a residual image calculated by dividing an image by a backlight image.

Abstract: A particular implementation determines objective distortion levels (d,) respectively for a plurality of artifact types. The objective distortion levels are aligned to ensure that the same distortion level of different types of artifacts corresponds to the same perceived distortion level. The aligned distortion levels (d,?) are sorted to obtain sorted distortion levels (d,?). The sorted distortion levels are then pooled together into an overall distortion level or an overall quality metric. The sorted distortion levels may be pooled using a weighted sum, wherein the weight is larger when the sorted distortion level is greater.

Abstract: A method for watermarking a three-dimensional object is disclosed. The three-dimensional object is represented by a mesh. A mesh comprises a plurality of vertices. The method further comprises computing an original thickness signature for said mesh from a plurality of thickness values, wherein a thickness value is computed for a vertex of the mesh; determining a target thickness signature, wherein the target thickness signature is a function of a watermark payload and of the original thickness signature; and modifying a position of at least one vertex of the mesh wherein a thickness signature computed for the modified mesh reaches the target thickness signature and wherein a distortion constraint between the mesh and the modified mesh is satisfied. A method for detecting a watermark in a three-dimensional object, a three-dimensional object carrying a watermark and, devices for implementing the methods are further disclosed.

Abstract: In storing of a plurality of overlapping recordings of a same digital video and/or audio stream, resource optimization is obtained through reuse of allocated resources when multiple record actions are operated on a same digital video and/or audio stream.

Abstract: There are provided a method and apparatus for providing reduced resolution update mode for multi-view video coding. A video encoder includes an encoder for encoding a picture using a reduced resolution update mode. The picture is one of a set of pictures corresponding to multi-view content having different view points with respect to a same or similar scene. The picture represents one of the different view points.

Abstract: This invention relates to a system, server and client for multiplexed streaming of multimedia content comprising at least one server being capable of transmitting multimedia content in a streaming environment through one or more data paths to a client, wherein the multimedia content is de-multiplexed by the server into a plurality of sub-streams with each sub-stream comprising a unique mark such that the client is capable of multiplexing said sub-streaming into a continuous stream. Furthermore, the invention relates to a method for multiplexed streaming of multimedia content.

Abstract: A multi-tier color look-up table (LUT) database system is provided. A first LUT can be stored in a database. First and second users can be granted access to the first LUT. The first and second users can have access to the first LUT for first and second periods of time, respectively. A second LUT can be stored in the database. The first user's access to the first LUT can be removed while the second user's access is maintained. The first and second users can be granted access to the second LUT. The first user can be granted a second access to the first LUT, and can have second access to the first LUT for a third period of time. The third period of time beginning after the end of the first period of time, with the second period of time overlapping with the first and third periods of time.

Abstract: The method comprises the steps of, successively for each image following a preceding image based on a map of motion vectors that corresponds to the motion from said preceding image toward said following image, building a pixel mask for said following image, applying said pixel mask to the corresponding following image in order to obtain a corresponding masked image that samples the pixels of said following image. The application of this method to color clustering allows the iterative update of the colors clusters with limited computer resources.

Abstract: The method comprises segmenting lines into regions of saturated pixels, and, for each of these saturated regions, selecting at least one color channel that is not saturated, then, for each pixel of said region, adding to the color information provided by the saturated color channel for said pixel a difference between the color information provided by the selected non-saturated color channel for said pixel and a baseline color value computed for the region of this pixel.

Abstract: The present invention relates to an antenna able to cover two opposite angular sectors comprising: first and second excited elements (10,11) each able to radiate a signal beam at a predetermined frequency, at least two reflector elements (20,21,22,23), called first and second reflector elements, able to reflect said beams in opposite directions. According to the invention, said first and second excited elements (10,11) and said at least two reflector elements (20,21,22,23) are aligned, said reflector elements being disposed between said first and second excited elements. At least two reflector elements from among said at least two reflector elements (20,21,22,23) are connected together electrically by a first transmission line (30) of predetermined length so that the reflector elements connected together participate jointly in reflecting the beams in the two opposite directions.

Abstract: Method comprising, for each pixel, obtaining a pixel expansion exponent value (E?(p)) by low pass filtering luminance values of colors of pixels in its spatial neighborhood, obtaining a pixel luminance-enhancement value (Yenhance(p)) by extraction of high frequencies of luminance values of colors of pixels in its spatial neighborhood, and then inverse tone mapping the luminance (Y(p)) according to the equation Yexp(p)=Y(p)E?(p)×[Yenhance(p)]c.