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1. 发明申请

WO2022243672A1 SECURE DECODER AND SECURE DECODING METHODS 审中-公开
公开(公告)号：WO2022243672A1
公开(公告)日：2022-11-24
申请号：PCT/GB2022/051238
申请日：2022-05-17
申请人： V-NOVA INTERNATIONAL LTD
发明人： CLUCAS, Richard
IPC分类号： H04N19/33 , H04N19/42 , H04N19/46 , H04N19/85 , H04N21/2347
摘要： A module having access to a secure memory and an unsecure memory, the module configured to: read, from the secure memory via a secure channel, a decrypted decoded rendition of a base layer of a video signal, wherein the decrypted decoded rendition of the base layer has a first resolution; read, from the unsecure memory, a decoded rendition of an enhancement layer of the video signal, wherein decoded rendition of the enhancement layer has a second resolution, wherein the second resolution is higher than the first resolution; generate an upsampled decrypted decoded rendition of the base layer of the video signal by upsampling the decrypted decoded rendition of the base layer such that the upsampled decrypted decoded rendition of the base layer has the second resolution; apply the decoded rendition of the enhancement layer to the upsampled decrypted decoded rendition of the base layer to generate an output plane; output the output plane, via the secured channel, to the secure memory for storage in the secure memory, wherein the output plane is for use in outputting by an output module to a display.

2. 发明申请

WO2022079450A1 DISTRIBUTED ANALYSIS OF A MULTI-LAYER SIGNAL ENCODING 审中-公开
公开(公告)号：WO2022079450A1
公开(公告)日：2022-04-21
申请号：PCT/GB2021/052685
申请日：2021-10-15
申请人： V-NOVA INTERNATIONAL LTD
发明人： MEARDI, Guido , VENNER, Laurence
IPC分类号： H04N19/33 , H04N21/44 , H04N19/132 , H04N19/164 , H04N19/167 , H04N19/174
摘要： The present disclosure relates to a method of analysing a plurality of video camera feeds, the method comprising: encoding, at a first location, the plurality of video camera feeds using a layer-based encoding, including generating encoded data streams for each of a plurality of layers within the layer-based encoding, wherein different layers in the plurality of layers correspond to different spatial resolutions, higher layers representing higher spatial resolutions; transmitting, to a second location remote from the first location, encoded data streams for one or more lowest layers for the plurality of video camera feeds; decoding, at the second location, the encoded data streams to generate a set of reconstructions of the plurality of video camera feeds at a first spatial resolution; applying one or more video analysis functions to the set of reconstructions to identify one or more video camera feeds for further analysis; sending, to the first location for the identified one or more video camera feeds for further analysis, a request for further encoded data streams for one or more layers above the one or more lowest layers; responsive to the request, transmitting, to the second location, the further encoded data streams for one or more layers above the one or more lowest layers; decoding, at the second location, the further encoded data streams to generate a set of reconstructions for the identified one or more video camera feeds at a second spatial resolution; and applying one or more video analysis functions to the set of reconstructions at the second spatial resolution.

3. 发明申请

WO2021005349A1 QUANTIZATION OF RESIDUALS IN VIDEO CODING 审中-公开
公开(公告)号：WO2021005349A1
公开(公告)日：2021-01-14
申请号：PCT/GB2020/051620
申请日：2020-07-06
申请人： V-NOVA INTERNATIONAL LTD
发明人： MEARDI, Guido , FERRARA, Simone , CICCARELLI, Lorenzo
IPC分类号： H04N19/126 , H04N19/172 , H04N19/44 , H04N19/46 , H04N19/70 , H04N19/33
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.

4. 发明申请

WO2021005347A1 QUANTIZATION OF RESIDUALS IN VIDEO CODING 审中-公开
公开(公告)号：WO2021005347A1
公开(公告)日：2021-01-14
申请号：PCT/GB2020/051618
申请日：2020-07-06
申请人： V-NOVA INTERNATIONAL LTD
发明人： MEARDI, Guido , FERRARA, Simone , CICCARELLI, Lorenzo
IPC分类号： H04N19/124 , H04N19/33 , H04N19/137 , H04N19/159 , H04N19/176
摘要： A method of encoding an input signal is provided, the method comprising: quantizing a set of data based on temporal information associated with said set of data.

5. 发明申请

WO2020245599A1 SYSTEM AND METHOD FOR PERFORMING OBJECT ANALYSIS 审中-公开
公开(公告)号：WO2020245599A1
公开(公告)日：2020-12-10
申请号：PCT/GB2020/051366
申请日：2020-06-05
申请人： V-NOVA INTERNATIONAL LTD
发明人： MEARDI, Guido , COBIANCHI, Guendalina , POULARAKIS, Stergios
IPC分类号： G06K9/00 , H04N19/30 , H04N19/167
摘要： There is provided a system that, when in operation, classifies one or more elements within an input signal, wherein the system: receives a compressed version of the input signal, wherein the compressed version comprises at least two sets of compressed data in a hierarchy, wherein each set of compressed data, when decoded, enables the signal to be reconstructed up to a respective level of quality; decodes the compressed version of the signal up to a first level of quality by decoding a first set of compressed data to generate a first reconstructed signal; performs a first classification operation on the first reconstructed signal; decodes the compressed version of the signal up to a second level of quality by decoding a second set of compressed data to generate a second reconstructed signal; and performs one or more second classification operations on the second reconstructed signal.

6. 发明申请

WO2019111004A1 METHODS AND APPARATUSES FOR ENCODING AND DECODING A BYTESTREAM 审中-公开
公开(公告)号：WO2019111004A1
公开(公告)日：2019-06-13
申请号：PCT/GB2018/053546
申请日：2018-12-06
申请人： V-NOVA INTERNATIONAL LTD
发明人： MAKEEV, Ivan , KESZTHELYI, Balázs , POULARAKIS, Stergios , SANNA, Michele , ETTINGER, Robert
IPC分类号： H04N19/96 , H04N19/91
CPC分类号： H04N19/436 , H04N19/119 , H04N19/129 , H04N19/167 , H04N19/176 , H04N19/30 , H04N19/46 , H04N19/96
摘要： There may be provided a method of decoding a received set of encoded data, the method comprising:receiving the encoded data set representing information that has been compressed;identifying from the encoded data set an ordered set of interspersed node symbols and data symbols; processing an ordered tree having a predetermined number of layers from the ordered set of identified node symbols and data symbols,wherein each node symbol comprises a set of indicator elements which indicate if a further symbol is expected later in the dataset for a branch in the tree, such that the ordered set of identified node symbols determine the tree and such that data symbols are arranged in data locations in the tree based on the indicator elements, and wherein each data symbol represents one or more values associated with the information that has been compressed; and,reconstructing the information that has been compressed using the values represented by the data symbols based on location of the data symbols in the ordered tree and using a predetermined value when the node symbols indicate that no data symbol is included in the data set corresponding to a location in the ordered tree.

7. 发明申请

WO2023047119A1 POINT CLOUD DATA FRAMES COMPRESSION 审中-公开
公开(公告)号：WO2023047119A1
公开(公告)日：2023-03-30
申请号：PCT/GB2022/052406
申请日：2022-09-22
申请人： V-NOVA INTERNATIONAL LTD
发明人： POULARAKIS, Stergios , EYLES, Christian
IPC分类号： G06T9/00 , H04N19/54 , H04N19/597
摘要： A method for encoding a frame of a sequence of frames of point cloud data for rendering a dynamic 3D scene, wherein each frame comprises a plurality of points, and each point comprises a 3D position and one or more attributes, the method comprising: obtaining a current point to be encoded in a current frame; identifying a preceding point encoded in a preceding frame which corresponds to the current point to be encoded in the current frame; encoding at least one attribute of the current point by reference to the preceding point using inter-frame predictive encoding to generate encoded data for the current point; and generating the current frame comprising the encoded data for the current point.

8. 发明申请

WO2023047094A1 LOW COMPLEXITY ENHANCEMENT VIDEO CODING WITH TEMPORAL SCALABILITY 审中-公开
公开(公告)号：WO2023047094A1
公开(公告)日：2023-03-30
申请号：PCT/GB2022/052379
申请日：2022-09-21
申请人： V-NOVA INTERNATIONAL LTD
发明人： MAURER, Florian , CICCARELLI, Lorenzo , FERRARA, Simone
IPC分类号： H04N19/31 , H04N19/30 , H04N19/132 , H04N19/33 , H04N19/36 , H04N19/37 , H04N19/39
摘要： The present disclosure relates to methods of encoding and decoding a video signal having temporal scalability. An encoder and decoder are also disclosed. The method of encoding a video signal comprises obtaining a base encoding of an input video signal, the base encoding being encoded using a base encoder to encode the input video signal at a first frame rate; and encoding the input video signal using an enhancement encoder to generate an enhancement encoding of the input video signal at a second frame rate, the enhancement encoder encoding the input video signal using at least a set of frames derived from the base encoding.

9. 发明申请

WO2022023739A1 INTEGRATING A DECODER FOR HIERACHICAL VIDEO CODING 审中-公开
公开(公告)号：WO2022023739A1
公开(公告)日：2022-02-03
申请号：PCT/GB2021/051940
申请日：2021-07-28
申请人： V-NOVA INTERNATIONAL LTD
发明人： MURRA, Fabio , JOHNSON, Robert , SPARANO, Daniele
IPC分类号： H04N19/42 , H04N19/33 , G06F9/445
摘要： A video decoder is provided with: one or more decoder plug-ins that provide a wrapper for one or more respective base decoders to implement a base decoding layer to decode an encoded video signal, each wrapper implementing an interface for data exchange with a corresponding base decoder; an enhancement decoder to implement an enhancement decoding layer, the enhancement decoder being configured to: receive an encoded enhancement signal; and, decode the encoded enhancement signal to obtain one or more layers of residual data, the one or more layers of residual data being generated based on a comparison of data derived from the decoded video signal and data derived from an original input video signal, and a decoder integration layer to control operation of the one or more decoder plug-ins and the enhancement decoder to generate a decoded reconstruction of the original input video signal using and the one or more layers of residual data from the enhancement encoding layer, wherein the decoder integration layer provides a control interface for the video decoder. A system, methods and computer readable medium are also provided.

10. 发明申请

WO2021209748A1 TRANSFORMED COEFFICIENT ORDERING FOR ENTROPY CODING 审中-公开
公开(公告)号：WO2021209748A1
公开(公告)日：2021-10-21
申请号：PCT/GB2021/050892
申请日：2021-04-14
申请人： V-NOVA INTERNATIONAL LTD.
发明人： ELLIOT, Max
IPC分类号： H04N19/12 , H04N19/129 , H04N19/33 , H04N19/436 , H04N19/91 , H04N19/93
摘要： The present disclosure provides a method for encoding input data in an encoder to generate encoded output data, wherein the method includes: instructing the conversion of the input data into base-layer reconstruction data using a down-sampled version of the input data; and generating enhancement-layer data that provides instructions for enhancing the base-layer reconstruction data, wherein the enhancement-layer data comprises residual data representing a difference between a reconstruction generated from the base-layer reconstruction data and data derived from the input data, wherein the residual data are subjected to at least one transform and at least one data compression method to generate the encoded output data, characterized in that the method includes: arranging for the at least one transform to include a Hadamard transform to convert the residual data to corresponding transform coefficients, wherein different output elements of the Hadamard transform are arranged as different surfaces to be encoded, and selecting an output order for the transform coefficients in the surfaces to provide a sequence of transform coefficients for the at least one data compression method to generate the encoded output data, wherein the output order is selected as one of at least a tile raster order and a n-by-n block "Z"-order.

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