Patents by Inventor Andre Seixas DIAS
Andre Seixas DIAS has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230412818Abstract: Decoding of a merge-predicted block is carried out, for triangular partitions of the block, using a combination of inter-prediction and intra-prediction. The combination of inter-prediction and intra-prediction to be used is signalled on a received bitstream. Combination may be algorithmic, for example arithmetic.Type: ApplicationFiled: August 24, 2023Publication date: December 21, 2023Inventors: SAVERIO BLASI, ANDRE SEIXAS DIAS, GOSALA KULUPANA
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Patent number: 11778201Abstract: Decoding of a merge-predicted block is carried out, for triangular partitions of the block, using a combination of inter-prediction and intra-prediction. The combination of inter-prediction and intra-prediction to be used is signalled on a received bitstream. Combination may be algorithmic, for example arithmetic.Type: GrantFiled: November 5, 2019Date of Patent: October 3, 2023Assignee: BRITISH BROADCASTING CORPORATIONInventors: Saverio Blasi, Andre Seixas Dias, Gosala Kulupana
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Patent number: 11616950Abstract: The present disclosure relates to: a method of decoding, in a decoder, a bitstream representing an image, wherein the bitstream comprises a plurality of blocks of residual samples, and one or more reconstructed image frames of the image are obtained by adding a respective block of residual samples to a combined hypotheses block of intra-predictions, the combined hypotheses block of intra-predictions being formed by applying a method comprising: receiving the bitstream; for each block of residual samples: determining if a combined intra-prediction hypothesis is indicated and/or inferred from the bitstream and, if so: for each block of residual samples of a block for which a combined intra-prediction hypothesis is indicated and/or inferred: determining a first intra-prediction mode from information extracted from the bitstream; determining or inferring at least a second, different, intra-prediction mode; applying the first intra-prediction mode to at least one reference sample to form a first hypothesis predictType: GrantFiled: December 19, 2019Date of Patent: March 28, 2023Assignee: British Broadcasting CorporationInventors: Gosala Kulupana, Andre Seixas Dias, Saverio Blasi
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Patent number: 11589038Abstract: Efficient prediction of samples within a block in a video encoder and decoder by means of computing both an inter-predicted prediction hypothesis as well as an intra-predicted prediction-hypothesis. The two prediction hypotheses are then combined together by means of parametric transformation to form a new prediction hypothesis which may be more accurate in predicting the content of the original block.Type: GrantFiled: December 10, 2019Date of Patent: February 21, 2023Assignee: BRITISH BROADCASTING CORPORATIONInventors: Saverio Blasi, Andre Seixas Dias, Gosala Kulupana
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Publication number: 20220303536Abstract: Encoding of video data in a video codec involves a transform of residuals. This can be composed of a primary transform and a secondary transform. The selection of the secondary transform is effected by considering the characteristics of a block to be encoded. The selection of secondary transform can be signaled to the decoder, or inferred therein.Type: ApplicationFiled: April 21, 2020Publication date: September 22, 2022Inventors: SAVERIO BLASI, ANDRE SEIXAS DIAS, GOSALA KULUPANA
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Publication number: 20220166967Abstract: Signalling of an intra-prediction mode is achieved by indicating whether or not to compile an MPM list, on the basis of a test as to the expectation that the MPM list will bear useful information. If an MPM is not convenient, then the mode is directly signalled. If the MPM list is to be constructed, then the mode can be signallad as a member of the MPM list or, if not a member, can be signalled directly or as a member of a mode list comprising all modes not on the MPM list.Type: ApplicationFiled: December 23, 2019Publication date: May 26, 2022Inventors: SAVERIO BLASI, ANDRE SEIXAS DIAS, GOSALA KULUPANA
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Patent number: 11317102Abstract: The present invention relates to a method of decoding a video bitstream, the method comprising the steps of: receiving a bitstream representing: residual samples produced by subtracting encoder filtered motion compensated prediction samples from image samples; and motion vectors used in forming the motion compensated prediction samples; the encoder filtering process conducted on the motion compensated prediction samples at an encoder having at least one parameter; using said motion vectors to provide motion compensated prediction samples from a previously reconstructed image; decoder filtering said motion compensated prediction samples in accordance with said at least one parameter; and adding said filtered motion compensated prediction samples to said residual samples to reconstruct images. A system and apparatus corresponding to this method are also disclosed.Type: GrantFiled: March 20, 2019Date of Patent: April 26, 2022Assignee: British Broadcasting CorporationInventors: Matteo Naccari, Marta Mrak, Saverio Blasi, Andre Seixas Dias
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Publication number: 20220103833Abstract: Decoding of a merge-predicted block is carried out, for triangular partitions of the block, using a combination of inter-prediction and intra-prediction. The combination of inter-prediction and intra-prediction to be used is signalled on a received bitstream. Combination may be algorithmic, for example arithmetic.Type: ApplicationFiled: November 5, 2019Publication date: March 31, 2022Inventors: SAVERIO BLASI, ANDRE SEIXAS DIAS, GOSALA KULUPANA
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Publication number: 20220060686Abstract: Efficient prediction of samples within a block in a video encoder and decoder by means of computing both an inter-predicted prediction hypothesis as well as an intra-predicted prediction-hypothesis. The two prediction hypotheses are then combined together by means of parametric transformation to form a new prediction hypothesis which may be more accurate in predicting the content of the original block.Type: ApplicationFiled: December 10, 2019Publication date: February 24, 2022Inventors: SAVERIO BLASI, ANDRE SEIXAS DIAS, GOSALA KULUPANA
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Publication number: 20210409696Abstract: The present disclosure relates to: a method of decoding, in a decoder, a bitstream representing an image, wherein the bitstream comprises a plurality of blocks of residual samples, and one or more reconstructed image frames of the image are obtained by adding a respective block of residual samples to a combined hypotheses block of intra-predictions, the combined hypotheses block of intra-predictions being formed by applying a method comprising: receiving the bitstream; for each block of residual samples: determining if a combined intra-prediction hypothesis is indicated and/or inferred from the bitstream and, if so: for each block of residual samples of a block for which a combined intra-prediction hypothesis is indicated and/or inferred: determining a first intra-prediction mode from information extracted from the bitstream; determining or inferring at least a second, different, intra-prediction mode; applying the first intra-prediction mode to at least one reference sample to form a first hypothesis predictType: ApplicationFiled: December 19, 2019Publication date: December 30, 2021Inventors: Gosala Kulupana, Andre Seixas Dias, Saverio Blasi
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Publication number: 20210306662Abstract: The present invention relates to a method of decoding in a decoder 1 a bitstream representing an image comprising: receiving the bitstream; for each block in the bitstream: forming predictions; and adding a respective prediction to each residual sample to form a reconstructed image sample; providing a reconstructed image from the reconstructed image samples; and outputting the reconstructed image; wherein the step of forming a prediction comprises: applying a first directional or non-directional prediction mode to reference samples to form at least a first set of one or more predictions for the current block; and applying one or more subsequent, different, directional or non-directional prediction modes to the same reference samples to form at least one subsequent set of one or more predictions for the current block, where any subsequent directional prediction mode differs from any first directional prediction mode in the spatial direction of prediction.Type: ApplicationFiled: August 7, 2019Publication date: September 30, 2021Inventors: Saverio Blasi, Andre Seixas Dias, Gosala Kulupana
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Publication number: 20210168378Abstract: The present invention relates to a method of decoding a video bitstream, the method comprising the steps of: receiving a bitstream representing: residual samples produced by subtracting encoder filtered motion compensated prediction samples from image samples; and motion vectors used in forming the motion compensated prediction samples; the encoder filtering process conducted on the motion compensated prediction samples at an encoder having at least one parameter; using said motion vectors to provide motion compensated prediction samples from a previously reconstructed image; decoder filtering said motion compensated prediction samples in accordance with said at least one parameter; and adding said filtered motion compensated prediction samples to said residual samples to reconstruct images. A system and apparatus corresponding to this method are also disclosed.Type: ApplicationFiled: March 20, 2019Publication date: June 3, 2021Applicant: British Broadcasting CorporationInventors: Matteo NACCARI, Marta MRAK, Saverio BLASI, Andre Seixas DIAS