Patent application number | Description | Published |
20100195740 | DECODING FUNCTION SELECTION DISTRIBUTED TO THE DECODER - The present invention relates to a method of transmitting at least one current image portion, wherein the method comprises selecting a coding function from a finite set of coding functions by applying at least one choice function of a first type, said choice function or functions of said first type using already-decoded image data, coding the current image portion using the selected coding function, sending the coded image portion to a decoder, and sending to said decoder information describing the choice function or functions of said first type. The invention also relates to the corresponding decoding method. | 08-05-2010 |
20100266046 | MOTION ENCODING AND DECODING - A method is provided for encoding a portion of a current image, including: an estimation of motion between the current image portion and a plurality of candidate image portions in order to form motion components, an evaluation of a performance criterion for each candidate image portion, and the selection of a reference image portion using said performance criteria. In the method, for at least one motion component, the motion estimation, the performance criteria evaluation and the reference image portion selection only use information considered to be available at the decoder and no motion information is inserted into an output flow intended for a decoder. A corresponding decoding method is also provided. | 10-21-2010 |
20110026594 | CODING AND DECODING OF AN IMAGE OR OF A SEQUENCE OF IMAGES SLICED INTO PARTITIONS OF PIXELS OF LINEAR FORM - A method is provided of coding an image or a sequence of images generating a stream of data comprising data representative of at least one group of pixels in one of said images. Such a method comprises the steps of: selecting, for a group of pixels to be coded, an initial partition of predetermined linear form, slicing said group of pixels to be coded according to said selected initial partition, propagating said initial partition selected in said group of pixels to be coded, until the latter is sliced in its entirety into a plurality of partitions of predetermined form, selecting, for said sliced group of pixels, a predetermined order of traversal of said partitions, predicting and coding said partitions one after the other, according to said selected order of traversal. | 02-03-2011 |
20110026845 | PREDICTION OF IMAGES BY PRIOR DETERMINATION OF A FAMILY OF REFERENCE PIXELS, CODING AND DECODING USING SUCH A PREDICTION - A method is provided for predicting partitions of at least one group of pixels in an image to be coded, with respect to a group of reference pixels. Accordingly, the group of reference pixels is obtained by calculating a function characteristic of a predetermined mode of prediction, the reference pixels of the group obtained being variable from one partition to another. | 02-03-2011 |
20110110431 | METHOD OF CODING AND DECODING A STREAM OF IMAGES; ASSOCIATED DEVICES - A method of coding a stream of images that are divided into blocks comprising, for a block to code, a motion compensating step during which a residue is calculated from said block to code and from a reference block chosen as predictor, characterized in that it comprises a step of resilience filtering applied to at least one reference block, during which high frequencies of original content of at least one part of the reference block are filtered to obtain a blurred reference block, a step of calculating a residue using the blurred reference block as predictor in a motion compensating step, and a step of processing said residue for it to be coded. | 05-12-2011 |
20110188573 | Method and Device for Processing a Video Sequence - The invention concerns a method and a device ( | 08-04-2011 |
20110194784 | ENCODING AND DECODING WITH ELIMINATION OF ONE OR MORE PREDETERMINED PREDICTORS - A method is provided for encoding an image or a sequence of images generating a data flow comprising data representing a group of pixels in one of said images, said method including: calculating a predetermined number of predictors in relation to said group of pixels, and selecting an optimal predictor in accordance with a predetermined selection criterion. Between the calculation and selection steps, a step of eliminating at least one predictor with a calculated predetermined number is performed, which comprises, for at least two i | 08-11-2011 |
20110206116 | METHOD OF PROCESSING A VIDEO SEQUENCE AND ASSOCIATED DEVICE - The present invention concerns a method and a device ( | 08-25-2011 |
20110228850 | METHOD OF PROCESSING A VIDEO SEQUENCE AND ASSOCIATED DEVICE - The invention concerns a method of processing a video sequence and an associated device. | 09-22-2011 |
20110249751 | PREDICTION OF IMAGES BY REPARTITIONING OF A PORTION OF REFERENCE CAUSAL ZONE, CODING AND DECODING USING SUCH A PREDICTION - A method is provided for decoding a data stream representative of an image or of a sequence of images, the stream comprising data representative of at least one portion of one of the images, the method implementing a step of predicting a motion vector of a partition of a current image portion, with respect to a reference causal zone which has been partitioned according to a mode of coding determined for the zone. The prediction step comprises, in relation to said current partition: partitioning anew at least one portion of the reference causal zone into a plurality of reference partitions, determining motion vectors respectively associated with reference partitions obtained subsequent to the new partitioning, determining a predictor motion vector on the basis of said determined motion vectors, and predicting the motion vector of said current partition on the basis of said determined predictor motion vector. | 10-13-2011 |
20120106647 | PREDICTION OF A MOVEMENT VECTOR OF A CURRENT IMAGE PARTITION HAVING A DIFFERENT GEOMETRIC SHAPE OR SIZE FROM THAT OF AT LEAST ONE ADJACENT REFERENCE IMAGE PARTITION AND ENCODING AND DECODING USING ONE SUCH PREDICTION - The invention relates to a method for predicting a movement vector (MVp | 05-03-2012 |
20120121021 | PREDICTION OF A MOVEMENT VECTOR OF A CURRENT IMAGE PARTITION POINTING TO A REFERENCE ZONE THAT COVERS SEVERAL REFERENCE IMAGE PARTITIONS AND ENCODING AND DECODING USING ONE SUCH PREDICTION - A method and apparatus are provided for predicting a movement vector of a current image partition in relation to a movement vector of a reference partition having the same form as the current image partition and belonging to a reference image (IN- | 05-17-2012 |
20120163465 | METHOD FOR ENCODING A VIDEO SEQUENCE AND ASSOCIATED ENCODING DEVICE - The invention concerns a method for encoding a video sequence comprising generating first and second reconstructions of the same first image using different reconstruction offsets when inverse quantizing transformed blocks, these two reconstructions being possible reference images for encoding another image in the sequence, wherein generating the second reconstruction comprises selecting a subset from the possible reconstruction offsets; generating image reconstructions of the first image using each offset of the subset; determining, as a first optimum offset θ | 06-28-2012 |
20120163473 | METHOD FOR ENCODING A VIDEO SEQUENCE AND ASSOCIATED ENCODING DEVICE - The invention relates to encoding a video sequence. A method according to the invention comprises encoding a first image; generating two reconstructions from the encoded first image, using two different reconstruction offsets; encoding a second image using temporal prediction based on a reference image selected from a set comprising the two reconstructions; wherein the obtaining of a different reconstruction offset comprises: partitioning the encoded first image to select the blocks of one partition, for example using criteria based on CTB, PU, TU of the HEVC standard or the Skip mode; for several reconstruction offsets, estimating a distortion measure based only on blocks collocated with those selected blocks, between the first reconstruction and an image reconstruction of the first image using each offset; and selecting the offset associated with minimum distortion. | 06-28-2012 |
20120177124 | Video encoding and decoding with improved error resilience - A portion of an image, belonging to a current encoding unit, is encoded by motion compensation with respect to a reference image portion indicated by an item of motion information. A motion information predictor is selected from among a set of motion information predictors and the item of motion information is encoded with respect to said motion information predictor. The set of motion information predictors used is permitted to include at least one temporal motion information predictor associated with an image portion of a previous image of said sequence but is not permitted to include any spatial motion information predictor that is unobtainable from encoded data of said current encoding unit, for example a spatial motion information predictor that was itself encoded with respect to a temporal motion information predictor. | 07-12-2012 |
20120207210 | METHOD AND DEVICE FOR PROCESSING A VIDEO SEQUENCE - The present invention concerns a method and device ( | 08-16-2012 |
20120230397 | METHOD AND DEVICE FOR ENCODING IMAGE DATA, AND METHOD AND DEVICE FOR DECODING IMAGE DATA - A method of encoding an image of a video sequence, the image being represented by a plurality of coding units, the encoding comprising at least two different encoding processes for encoding the image wherein each encoding process introduces coding dependencies between coding units, the method comprising: determining a set of slice boundaries for each encoding process wherein the set of slice boundaries for each encoding process partitions the image into one or more slices for the respective encoding process, the one or more slices each including a set of coding units of the image between a pair of respective slice boundaries; the coding units of one slice being encoded independently of coding units of another of the slices of the respective encoding process; wherein the slice boundaries for each encoding process are defined as a function of at least one slice boundary defining parameter. | 09-13-2012 |
20140092959 | Method and device for deriving a set of enabled coding modes - A method for deriving a set of enabled coding modes relative to the encoding of an image or image portion which forms part of an image sequence. The method comprises:
| 04-03-2014 |
20140169476 | Method and Device for Encoding a Sequence of Images and Method and Device for Decoding a Sequence of Image - A method and device for deriving motion information of an image portion of an image predicted by motion prediction with respect to at least one reference image, the method comprising for said image portion: obtaining a number i of motion information predictors | 06-19-2014 |
20140241436 | METHOD AND DEVICE FOR DETERMINING PARAMETERS FOR ENCODING OR DECODING OF AN IMAGE OF A VIDEO SEQUENCE - A method of and a device for determining encoding parameters for encoding, into a bitstream, a portion of an image of a video sequence, the image portion being encoded by motion compensation with respect to at least one reference image portion, the encoding parameters for encoding the image portion including a coding mode and a motion information predictor, wherein the coding mode is selected from among at least a first coding mode and a second coding mode and wherein the motion information predictor is selected from a set of motion information predictors which is the same for at least the first and the second coding modes, the selection of the coding mode and the motion information predictor involving comparing costs of encoding the image portion using the motion information predictors of the set in the two coding modes, the method comprising or the device comprising means for: omitting, for at least one said motion information predictor of the set, computing of such a cost for at least one of said first and second coding modes. Consequently encoding time and complexity may be reduced and encoding performance may be improved. | 08-28-2014 |
20140301480 | METHOD AND DEVICE FOR PROVIDING COMPENSATION OFFSETS FOR A SET OF RECONSTRUCTED SAMPLES OF AN IMAGE - Compensation offsets are provided for a set of reconstructed samples of an image. Each sample has a sample value. A method of providing the compensation offsets comprises selecting, based on a rate distortion criterion, a classification from among a plurality of predetermined classifications. Each predetermined classification has a classification range smaller than a full range of the sample values and is made up of a plurality of classes, each defining a range of sample values within the classification range, into which class a sample is put if its sample value is within the range of the class concerned. A compensation offset is associated with each class of the selected classification for application to the sample value of each sample of the class. | 10-09-2014 |
20140301489 | METHOD, DEVICE AND PROGRAM FOR ENCODING AND DECODING A SEQUENCE OF IMAGES - A method of encoding a sequence of images comprises performing area-by-area loop filtering on at least one image of the sequence and disabling such area-by-area loop filtering on at least one other image of the sequence. The images of the sequence are associated with respective levels from a plurality of levels, the levels corresponding to different respective rate-distortion balances or to different image qualities, and the images on which the area-by-area loop filtering is disabled are determined in dependence upon the levels. | 10-09-2014 |
20140369429 | METHOD AND DEVICE FOR OPTIMIZING ENCODING/DECODING OF COMPENSATION OFFSETS FOR A SET OF RECONSTRUCTED SAMPLES OF AN IMAGE - The present invention provides a method and a device for coding and decoding at least a part of an image comprising a plurality of samples, each sample comprising at least two components, and the encoded image comprising at least one filtering parameter. The filtering comprises using at least one filtering parameter as a common filtering parameter for filtering both the first component and the second component of a reconstructed sample. | 12-18-2014 |
20150010054 | DERIVING REFERENCE MODE VALUES AND ENCODING AND DECODING INFORMATION REPRESENTING PREDICTION MODES - Reference prediction mode values, also referred to as most probable modes, usable for encoding or decoding of a prediction mode related to a current coding unit, are derived. First and second reference prediction mode values are derived (S | 01-08-2015 |
20150326860 | METHOD AND DEVICE FOR PROVIDING COMPENSATION OFFSETS FOR A SET OF RECONSTRUCTED SAMPLES OF AN IMAGE - Compensation offsets are provided for a set of reconstructed samples of an image. Each sample has a sample value. A method of providing the compensation offsets comprises selecting, based on a rate distortion criterion, a classification from among a plurality of predetermined classifications. Each predetermined classification has a classification range smaller than a full range of the sample values and is made up of a plurality of classes, each defining a range of sample values within the classification range, into which class a sample is put if its sample value is within the range of the class concerned. A compensation offset is associated with each class of the selected classification for application to the sample value of each sample of the class. | 11-12-2015 |
20150334393 | METHOD AND DEVICE FOR OPTIMIZING ENCODING/DECODING OF COMPENSATION OFFSETS FOR A SET OF RECONSTRUCTED SAMPLES OF AN IMAGE - The present invention provides a method and a device for coding and decoding at least a part of an image comprising a plurality of samples, each sample comprising at least two components, and the encoded image comprising at least one filtering parameter. The filtering comprises using at least one filtering parameter as a common filtering parameter for filtering both the first component and the second component of a reconstructed sample. | 11-19-2015 |
20150334423 | METHOD AND DEVICE FOR OPTIMIZING ENCODING/DECODING OF COMPENSATION OFFSETS FOR A SET OF RECONSTRUCTED SAMPLES OF AN IMAGE - The present invention provides a method and a device for coding and decoding at least a part of an image comprising a plurality of samples, each sample comprising at least two components, and the encoded image comprising at least one filtering parameter. The filtering comprises using at least one filtering parameter as a common filtering parameter for filtering both the first component and the second component of a reconstructed sample. | 11-19-2015 |
Patent application number | Description | Published |
20120327999 | Encoding mode values representing prediction modes - A method of encoding a mode value representing a prediction mode comprises selecting from among at least first and second encoding processes an encoding process to apply to the mode value to be encoded. The first encoding process comprises encoding first information indicating a predetermined relationship between the mode value to be encoded and at least one predetermined value. The second encoding process comprises encoding second information representing the mode value to be encoded. The encoding by the second encoding process takes account of the outcome of at least one prior first encoding process. This can be achieved by updating mode probabilities based on the outcome of the first, as well as the second, encoding process. Such a method creates a link between the first and second encoding processes and can improve coding efficiency. | 12-27-2012 |
20130272420 | VIDEO ENCODING AND DECODING WITH IMPROVED ERROR RESILIENCE - A sequence of digital images is encoded into a plurality of encoding units. An image portion is encoded by motion compensation with respect to a reference image portion indicated by an item of motion information. A motion information predictor is determined among a set of motion information predictors and the item of motion information is encoded with respect to the motion information predictor. It is determined to encode the motion information predictors of an encoding unit using either a first encoding mode, which provides encoded data efficiently compressed but not parseable by a decoder in case of losses in the bitstream, or a second encoding mode which provides encoded data less efficiently compressed but systematically parseable by a decoder even in case of losses in the bitstream. | 10-17-2013 |
20130279596 | VIDEO ENCODING AND DECODING WITH IMPROVED ERROR RESILIENCE - A method of encoding a sequence of digital images into a bitstream comprises generating for an image portion to encode a set of motion information predictors having controlled diversity and selecting a motion information predictor for the image portion to encode from the generated set of motion information predictors. Generating the set comprises: generating first motion information predictors; identifying one or more first motion information predictors as seed predictors; generating one or more second motion information predictors based on the seed predictor(s); and forming said set of motion information predictors from the first and/or second motion information predictors. | 10-24-2013 |
20130287112 | VIDEO ENCODING AND DECODING WITH IMPROVED ERROR RESILIENCE - An encoding method comprises obtaining a target number of motion information predictors to be used for an image portion to encode and generating a set of motion information predictors using the obtained target number. The set is generated by: obtaining a first set of motion information predictors each associated with an image portion having a predetermined spatial and/or temporal relationship with the image portion being encoded; modifying the first set of motion information predictors by removing duplicate motion information predictors to obtain a reduced set of motion information predictors containing a first number of motion information predictors, each motion information predictor of the reduced set being different from any other motion information predictor of the reduced set; comparing the first number of motion information predictors to the target number obtained, and if the first number is lower than the target number, obtaining an additional motion information predictor and adding it to the reduced set of motion information predictors. | 10-31-2013 |
20130287113 | VIDEO ENCODING AND DECODING WITH IMPROVED ERROR RESILIENCE - A sequence of digital images is encoded into a bitstream, at least one portion of an image being encoded by motion compensation with respect to a reference image portion. A target number of motion information predictors is obtained. Using the target number a set of motion information predictors is generated having controlled diversity. A motion information predictor for the image portion to encode is selected from the generated set of motion information predictors. The target number is signaled in the bitstream, together with information relating to the selected motion information predictor. | 10-31-2013 |
20130294521 | VIDEO ENCODING AND DECODING WITH IMPROVED ERROR RESILIENCE - For an image portion to encode an initial set of motion information predictors is obtained. It is tested whether the number of motion information predictors in the initial set is lower than a target number and, if so, one or more motion information predictors are added to the initial set to generate a set of motion information predictors having controlled diversity. The motion information predictors of the initial set are actual motion information predictors, having motion vectors obtained from image portions of the image being encoded or of a reference image, and potential motion information predictors for addition include one or more further such actual motion information predictors and also include one or more virtual motion information predictors not having motion vectors obtained from image portions of said image being encoded or of a reference image. A motion information predictor for the image portion to encode is selected from the generated set of motion information predictors. | 11-07-2013 |
20130301734 | VIDEO ENCODING AND DECODING WITH LOW COMPLEXITY - A target number of motion information predictors to be used for an image portion to encode is obtained. A first set of motion information predictors is obtained each associated with an image portion having a predetermined spatial and/or temporal relationship with the image portion being encoded. Duplicates are eliminated to obtain a reduced set of motion information predictors containing a first number of motion information predictors, each motion information predictor of said reduced set being different from any other motion information predictor of said reduced set. The first number is compared to the target number and, if said first number is lower than said target number, an additional motion information predictor is obtained and added to the reduced set of motion information predictors. | 11-14-2013 |
20140016874 | METHOD AND DEVICE FOR PREDICTING AN IMAGE PORTION FOR ENCODING OR DECODING OF AN IMAGE - A method of predicting a portion of an image, for encoding or decoding of an image, the image portion being predicted by an intra prediction process with respect to samples of at least one reference image portion of the image, the method comprising deriving samples from at least one reference image portion; generating, from said derived samples, by the intra prediction process, at least one prediction image portion corresponding to the image portion to be predicted; and applying a parametric displacement transformation to at least the derived samples and/or the prediction image portion. A method and device for encoding and a method an device for decoding are also described. | 01-16-2014 |
20140064369 | VIDEO ENCODING AND DECODING - Motion vectors of a first reference frame are permitted to point to a plurality of further reference frames. A method of storing the motion vectors comprises, when a block of the first reference frame has two motion vectors initially, selecting one of the two motion vectors, the non-selected motion vector not being stored. The selected motion vector may be scaled. This can reduce the motion vector memory size. | 03-06-2014 |
20140064372 | VIDEO ENCODING AND DECODING - A temporal motion vector predictor is includable, together with one or more spatial motion vector predictors, in a set of motion vector predictors for a block to encode of a current frame. A method of determining the temporal motion vector predictor comprises selecting as the temporal predictor one motion vector from among motion vectors in a reference block of a reference frame different from the current frame. The reference block is a block of the reference frame collocated with the block to encode or a block of the reference frame neighboring the collocated block. The selection is based on a diversity criterion for achieving diversity among the predictors of the set. | 03-06-2014 |
20140177721 | METHOD AND DEVICE FOR DETERMINING RESIDUAL DATA FOR ENCODING OR DECODING AT LEAST PART OF AN IMAGE - A method and device for determining residual data for encoding at least part of an image of an enhancement layer of video data, the video data including the enhancement layer and a base layer, the enhancement layer being composed of processing blocks and the base layer being composed of elementary units each having associated residual data, the method comprising for a processing block of the enhancement layer
| 06-26-2014 |
20140192860 | METHOD, DEVICE, COMPUTER PROGRAM, AND INFORMATION STORAGE MEANS FOR ENCODING OR DECODING A SCALABLE VIDEO SEQUENCE - The invention relates to a method of encoding or decoding a scalable video sequence of frames encoded in a bit-stream made of at least one lower layer and one upper layer, the method comprising:
| 07-10-2014 |
20140192869 | Method, device, computer program, and information storage means for encoding or decoding a video sequence - The invention relates to video coding. A method of encoding or decoding such a video sequence according to the invention comprises: obtaining a reconstructed frame area made of an array of sample values; applying a sample adaptive offset, SAO, filtering to the reconstructed frame area based on SAO parameters; wherein at least one of the SAO parameters is determined independently of the sample values of the reconstructed frame area. Preferably, the sample-independent SAO parameters define an Edge Offset filtering. | 07-10-2014 |
20140192884 | Method and device for processing prediction information for encoding or decoding at least part of an image - A method of processing prediction information for encoding or decoding at least part of an image of an enhancement layer of video data, the video data including the enhancement layer and a base layer, the enhancement layer being composed of processing blocks and the base layer being composed of elementary units each having associated prediction data, the method comprising for a processing block of the enhancement layer: obtaining prediction data of at least a co-located elementary unit of the reference data, the prediction data defining first predictors; and generating, from said prediction data obtained, further predictors for prediction of the current processing block. | 07-10-2014 |
20140192886 | Method and Apparatus for Encoding an Image Into a Video Bitstream and Decoding Corresponding Video Bitstream Using Enhanced Inter Layer Residual Prediction - A method for encoding an image of pixels and for decoding a corresponding bit stream is described. More particularly, it concerns residual prediction according to a spatial scalable encoding scheme. It can be considered in the context of the Scalable extension of the HEVC standard (noted SHVC), being developed by the ISO-MPEG and ITU-T standardization organizations. It is proposed to simplify the computational complexity and the memory usage needed by the GRILP and DIFF inter modes by combining upsampling and motion compensation operations into one single operation and/or reducing the complexity of the linear filtering processes involved in some of the processes and/or adopt some limiting usage of these two modes when combined with bidirectional prediction. Accordingly a reduction of the complexity is achieved with, at worst, a limited loss in coding efficiency. | 07-10-2014 |
20140301487 | METHOD AND DEVICE FOR CLASSIFYING SAMPLES OF AN IMAGE - A method and a device for classifying samples of an image, each sample having a respective sample value the method comprising repartition of each of the samples into a plurality of index classes, wherein the index class allocated to each sample is determined in dependence upon the sample value of the said sample with respect to the sample values of first neighbouring samples of said sample according to a given direction and further in respect to the sample values of the first neighbouring samples with respect to the sample values of samples neighbouring the first neighbouring samples according to the said given direction. Processing each sample according to the respective allocated index class. | 10-09-2014 |
20140321544 | Method and Device for Encoding a Sequence of Images and Method and Device for Decoding a Sequence of Images - A method and device for deriving at least one motion information predictor for encoding of an image portion by motion compensation. At least two distinct first and second subsets of motion information predictors of a first set of motion information predictors are provided. Processing of the first subset of motion information predictors and processing of the second subset of motion information predictors is performed to obtain a final set of motion information predictors usable for predicting said image portion from the reference image portion. Processing of the second subset may comprise removing duplicates from among the motion information predictors of said second subset, and may be performed so as to exclude temporal predictors. At least part of the processing of the second subset of motion information predictors may be performed concurrently with at least part of the processing of the first subset of motion information predictors. | 10-30-2014 |
20150103916 | Method and apparatus for displacement vector component transformation in video coding and decoding - A method and a device for transforming a displacement vector component in the process of encoding or decoding a video. It applies more particularly to a mode of coding where a block of pixel is predictively encoded based on a predictor block pertaining to the same image. This mode of encoding a block of pixel is generally referred to as INTRA Block Copy mode. It proposes to take into account the particular constraints brought by the causal principle in the range of admissible values of the components of the displacement vector. In particular, for some values of one first component, the second component is transformed in order to improve the coding efficiency for it. Accordingly, the magnitude of the second component is reduced improving the coding of its value. | 04-16-2015 |
20150131729 | Video Encoding and Decoding - A temporal motion vector predictor is includable, together with one or more spatial motion vector predictors, in a set of motion vector predictors for a block to encode of a current frame. A method of determining the temporal motion vector predictor comprises selecting as the temporal predictor one motion vector from among motion vectors in a reference block of a reference frame different from the current frame. The reference block is a block of the reference frame collocated with the block to encode or a block of the reference frame neighboring the collocated block. The selection is based on a diversity criterion for achieving diversity among the predictors of the set. | 05-14-2015 |
20150181223 | Method and apparatus for transition encoding in video coding and decoding - The invention is related to video coding and decoding. More precisely, the present invention is dedicated to a coding method investigated in the scope of screen content coding, called palette mode. It particularly concerns the encoding of level values based on the use of patterns to predict the level value in order to avoid their transmission. It has been devised to avoid the transmission of level value when the value may be predicted based on the neighbourhood of the pixel to encode. This neighbourhood is matched against memorized pattern so as to predict the level value due to the repetitive occurrence of these patterns. It proposes to save a pattern table in addition to the palette table. This pattern table is constructed symmetrically by the encoder and the decoder and allows to retrieve some predicted level value and to avoid their transmission. | 06-25-2015 |
20150264390 | Method, device, and computer program for optimizing transmission of motion vector related information when transmitting a video stream from an encoder to a decoder - The invention relates to the encoding or decoding of at least one portion of an image by predicting the at least one portion using at least one predictor, the at least one predictor being determined as a function of at least one reference image portion and as a function of values of a plurality of items of motion information. After having obtained a value of a first item of the plurality of items, a value of a second item is evaluated as a function of the obtained value of the first item, the second item being an item of the plurality of items and being distinct from the first item. Next, the at least one predictor is determined as a function of the at least one reference image portion and as a function of the first and second items. | 09-17-2015 |
20150326863 | METHOD AND DEVICE FOR ENCODING OR DECODING AND IMAGE - A video signal has at least a first signal component corresponding to a first color, and a second signal component, associated with the first signal component and corresponding to a second color. Each signal component is divided into blocks, and each block has one or more encodable units. The encoding of at least one encodable unit of the second signal component is switchable between first and second modes. A method of encoding the signal comprises excluding, for at least one encodable unit of the second signal component, use of the second mode for the encoding of the second-signal-component encodable unit concerned when at least one predetermined condition is satisfied relating to an encoded block or encodable unit of the first signal component that corresponds to the second-signal-component encodable unit concerned. | 11-12-2015 |
20150341638 | METHOD AND DEVICE FOR PROCESSING PREDICTION INFORMATION FOR ENCODING OR DECODING AN IMAGE - A method of providing a mode value representing a prediction mode of at least part of an image to be encoded, the image being composed of a plurality of processing blocks, each processing block being predictable by applying a prediction mode of a plurality M of available prediction modes, the method comprising: | 11-26-2015 |
20150341657 | Encoding and Decoding Method and Devices, and Corresponding Computer Programs and Computer Readable Media - A method for encoding an image comprises the following steps: obtaining intermediate data representative of a base layer of said image encoded in a first compression format, the intermediate data being encoded according to a predefined data format allowing inter layer prediction of an enhancement layer of said image to be encoded in any of a plurality of second compression formats; generating a final bitstream by encoding the enhancement layer according to one of said second compression formats. A corresponding encoding method, as well as encoding and decoding devices, are also described. | 11-26-2015 |
Patent application number | Description | Published |
20090029599 | COMPUTER NETWORK CONNECTOR - A connector includes an insert including contacts having free parts to receive homologous flat contacts of a plug. The insert further includes a rotation axis about which the insert can be rotated and spring means urging the insert toward the position that it assumes when no plug is present. The insert can include, at the sides, long curved contacts and, in a central portion, shorter curved contacts, the points of contact of the contacts of the insert with the flat contacts of a plug being substantially aligned over all the contacts. | 01-29-2009 |
20090111300 | Rapid-Installation Connector for an Armored Cable - The invention concerns a connector for an armoured cable, this connector comprising a socket body and a conductive earthing member, the socket body being designed to receive a multi-conductor plug and comprising a wall element conformed so as to be in contact with this plug, and the earthing member comprising a band gripping the armouring of the cable and an elongate element electrically connecting the band to the socket body. According to the invention, the elongate element is flexible and the band takes the form of an open elastic clamp designed so as to be forcibly fitted on the armouring of the cable. | 04-30-2009 |
20090124109 | Conductor with Simplified Assembly for Multi-Conductor Cable - The invention concerns a connector designed to be fitted to a multi-conductor cable and which comprises at least one socket, a cable grip formed by a portion connected to the socket and a free portion articulated on the connected portion, and assembly means. The assembly means comprise a lever articulated around an articulation axis, held by the socket and distant from the articulation axis of the grip, wherein this lever has a curved end that may exert on the external surface of the free portion of the grip a thrust force which solicits the grip when closing in response to the application, on the lever, of a rotational torque around the articulation axis. | 05-14-2009 |
20100159735 | CONNECTOR WITH SIMPLIFIED MOUNTING FOR A MULTIPLE CONDUCTOR CABLE - The invention relates to a connector to be mounted on a cable (K) with a plurality of insulated connectors (C), and including a comb ( | 06-24-2010 |
20100167587 | CONNECTION DEVICE FOR LOCAL AREA NETWORK - This device includes two connection units and a compensation circuit provided with tracks ( | 07-01-2010 |
20100190372 | QUICK-FIT CONNECTION SOCKET FOR MULTI-CONDUCTOR CABLE - The invention relates to a socket to be mounted on a multi-conductor cable and including a removable comb ( | 07-29-2010 |