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1. 发明申请

US20210329246A1 ARCHITECTURE FOR SIGNAL ENHANCEMENT CODING 有权
公开(公告)号：US20210329246A1
公开(公告)日：2021-10-21
申请号：US17265146
申请日：2019-08-01
申请人： V-NOVA INTERNATIONAL LIMITED
发明人： Guido MEARDI , Lorenzo CICCARELLI , Simone FERRARA
IPC分类号： H04N19/124 , H04N19/60 , H04N19/91 , H04N19/93
摘要： There is disclosed a method of encoding an input signal, the method comprising producing a base encoded signal by feeding an encoder with a down-sampled version of an input signal. The method further comprising producing a first quantised residual signal by: decoding the base encoded signal to produce a base decoded signal; and using a difference between the base decoded signal and the down-sampled version of the input signal to produce a first residual signal; quantising the first residual signal to produce the first quantised residual signal. The method further comprises producing a second residual signal by: de-quantising the first quantised residual signal to produce a reconstructed version of the first residual signal; correcting the base decoded signal using the first reconstructed version of the residual signal to create a corrected decoded version; upsampling the corrected decoded version; and using a difference between the corrected decoded signal and the input signal to produce the second residual signal.

2. 发明申请

US20220329802A1 QUANTIZATION OF RESIDUALS IN VIDEO CODING 有权
公开(公告)号：US20220329802A1
公开(公告)日：2022-10-13
申请号：US17624787
申请日：2020-07-06
申请人： V-NOVA INTERNATIONAL LIMITED
发明人： Guido MEARDI , Simone FERRARA , Lorenzo CICCARELLI
IPC分类号： H04N19/124 , H04N19/184
摘要： A method of decoding an encoded stream into a reconstructed output signal is provided, the method comprising: receiving a first output signal decoded from a first base encoded stream according to a first codec; receiving a level encoded stream; decoding the level encoded stream to obtain a set of residuals; and, combining the set of residuals with the first output signal to generate a reconstructed signal, wherein the decoding the level encoded stream comprises: decoding a set of quantized coefficients from the level encoded stream; dequantizing the set of quantized coefficients.

3. 发明申请

US20220191521A1 PROCESSING OF RESIDULAS IN VIDEO CODING 有权
公开(公告)号：US20220191521A1
公开(公告)日：2022-06-16
申请号：US17440587
申请日：2019-12-13
申请人： V-NOVA INTERNATIONAL LIMITED
发明人： Simone FERRARA , Lorenzo CICCARELLI , Guido MEARDI
IPC分类号： H04N19/33 , H04N19/157 , H04N19/60 , H04N19/80 , H04N19/117 , H04N19/14 , H04N19/124 , H04N19/46 , H04N19/105 , H04N19/31
摘要： According to aspects of the invention there is provided a method of modifying sets of residuals data where residual data can be used to correct or enhance data of a base stream, for example a frame of a video encoded using a different video coding technology. There may be provided a method of encoding an input signal, the method comprising: receiving an input signal; generating one or more sets of residuals based on a difference between the input signal and one or more reconstructed signals at one or more respective resolutions; modifying the one or more sets of residuals based on a selected residual mode; and encoding the one or more sets of modified residuals to generate one or more respective encoded streams, wherein the encoding includes transforming the one or more sets of modified residuals, and wherein the modifying includes selecting a subset of residuals not to encode based on the selected residual mode. An encoder may also be provided.

4. 发明申请

US20220408099A1 EMBEDDING DATA WITHIN TRANSFORMED COEFFICIENTS USING BIT PARTITIONING OPERATIONS 有权
公开(公告)号：US20220408099A1
公开(公告)日：2022-12-22
申请号：US17770114
申请日：2020-10-23
申请人： V-NOVA INTERNATIONAL LIMITED
发明人： Lorenzo CICCARELLI , Simone FERRARA , Guido MEARDI
IPC分类号： H04N19/162 , H04N19/124 , H04N19/13 , H04N19/176 , H04N19/184 , H04N19/12 , H04N19/18 , H04N19/154 , H04N19/34 , H04N19/463 , H04N19/88 , H04N19/33 , H04N19/60
摘要： Examples described herein relate to decoding and encoding signals. Certain examples described herein encapsulate custom data that is not signal data within a stream of encoded signal data. The custom data may comprise a wide variety of metadata that annotates the signal data, or provides additional information relating to the signal data. Certain examples described herein encapsulate custom data within a set of transformed coefficient values that represent data derived from a transform operation that forms part of the signal encoding. The encapsulation is may be performed by applying a bit shift operation to coefficient bits representing the set of transformed coefficient values.

5. 发明申请

US20220400270A1 LOW COMPLEXITY ENHANCEMENT VIDEO CODING 有权
公开(公告)号：US20220400270A1
公开(公告)日：2022-12-15
申请号：US17439227
申请日：2020-03-18
申请人： V-NOVA INTERNATIONAL LIMITED
发明人： Guido MEARDI , Simone FERRARA , Lorenzo CICCARELLI , Ivan DAMNJANOVIC , Richard CLUCAS , Sam LITTLEWOOD
IPC分类号： H04N19/33 , H04N19/107 , H04N19/124 , H04N19/18 , H04N19/70 , H04N19/91 , H04N19/186 , H04N19/60 , H04N19/42 , H04N19/176 , H04N19/93
摘要： Examples of a low complexity enhancement video coding are described. Encoding and decoding methods are described, as well as corresponding encoders and decoders. The enhancement coding may operate on top of a base layer, which may provide base encoding and decoding. Spatial scaling may be applied across different layers. Only the base layer encodes full video, which may be at a lower resolution. The enhancement coding instead operates on computed sets of residuals. The sets of residuals are computed for a plurality of layers, which may represent different levels of scaling in one or more dimensions. A number of encoding and decoding components or tools are described, which may involve the application of transformations, quantization, entropy encoding and temporal buffering. At an example decoder, an encoded base stream and one or more encoded enhancement streams may be independently decoded and combined to reconstruct an original video.

6. 发明申请

US20220272342A1 QUANTIZATION OF RESIDUALS IN VIDEO CODING 有权
公开(公告)号：US20220272342A1
公开(公告)日：2022-08-25
申请号：US17624788
申请日：2020-07-06
申请人： V-NOVA INTERNATIONAL LIMITED
发明人： Guido MEARDI , Simone FERRARA , Lorenzo CICCARELLI
IPC分类号： H04N19/124 , H04N19/184 , H04N19/30
摘要： A method of decoding an encoded signal is provided, said encoded signal received within a bitstream, the method comprising: receiving a set of quantized data associated with the encoded signal; determining at least one dequantization parameter; and dequantizing the quantized data based at least in part of the at least one dequantization parameter.

7. 发明申请

US20220191509A1 RATE CONTROL FOR A VIDEO ENCODER 有权
公开(公告)号：US20220191509A1
公开(公告)日：2022-06-16
申请号：US17440585
申请日：2019-12-13
申请人： V-NOVA INTERNATIONAL LIMITED
发明人： Guido MEARDI , Lorenzo CICCARELLI
IPC分类号： H04N19/152 , H04N19/136 , H04N19/124 , H04N19/30 , H04N19/172 , H04N19/156 , H04N19/184
摘要： A method of encoding an input video as a hybrid video stream, the method comprising: receiving the input video at a first resolution; obtaining an indication of a desired quality level for the encoding, the desired quality level setting one or more bit rates for the hybrid video stream, said hybrid stream comprising a base encoded stream at a second resolution and a plurality of enhancement streams at each of the first and second resolutions, the first resolution being higher than the second resolution; encoding each of the plurality of enhancement streams by: generating a set of residuals based on a difference between the input video and a reconstructed video at the respective resolution of the enhancement stream; determining quantisation parameters for the set of residuals for based on the desired quality level; quantising the set of residuals based on the quantisation parameters; and creating an encoded stream from the set of quantised residuals.

8. 发明申请

US20220159250A1 RESIDUAL FILTERING IN SIGNAL ENHANCEMENT CODING 有权
公开(公告)号：US20220159250A1
公开(公告)日：2022-05-19
申请号：US17441034
申请日：2020-02-28
申请人： V-NOVA INTERNATIONAL LIMITED
发明人： Guido MEARDI , Lorenzo CICCARELLI
IPC分类号： H04N19/117 , H04N19/124 , H04N19/18 , H04N19/132 , H04N19/30 , H04N19/60 , H04N19/176 , H04N19/82
摘要： According to aspects of the invention there is provided a method of encoding an input signal, the method comprising: producing a base encoded signal by feeding an encoder with a downsampled version of an input signal; producing a first residual signal by: obtaining a decoded version of the base encoded signal; and using a difference between the decoded version of the base encoded signal and the downsampled version of the input signal to produce a first residual signal; encoding the first residual signal to produce a first encoded residual signal; producing a second residual signal by: decoding the first encoded residual signal to produce a first decoded residual signal; filtering the first decoded residual signal to produce a filtered version of the first decoded residual signal; correcting the decoded version of the base encoded signal using the filtered version of the first decoded residual signal to create a corrected decoded version; upsampling the corrected decoded version; and using a difference between the corrected decoded signal and the input signal to produce the second residual signal; and encoding the second residual signal to produce a second encoded residual signal, wherein the base encoded signal, the first encoded residual signal and the second encoded residual signal comprise an encoding of the input signal. An encoder, decoder and computer readable media may also be provided.

9. 发明申请

US20210297681A1 LOW COMPLEXITY ENHANCEMENT VIDEO CODING 有权
公开(公告)号：US20210297681A1
公开(公告)日：2021-09-23
申请号：US17260335
申请日：2019-07-15
申请人： V-NOVA INTERNATIONAL LIMITED
发明人： Richard CLUCAS , Lorenzo CICCARELLI , Sam LITTLEWOOD
IPC分类号： H04N19/169 , H04N19/33 , H04N19/70 , H04N19/177
摘要： According to an aspect of the invention there may be provided a method of decoding a bitstream, the method comprising: receiving a Supplemental Enhancement Information (SEI) message; parsing the SEI message to obtain an encoded bitstream, said encoded bitstream containing encoded information which is associated with information of an original signal; and, decoding said encoded bitstream to obtain decoded information which is used to reconstruct the original signal. A method of decoding is also provided as well as apparatuses and a computer readable medium.

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