Patents by Inventor Zhouye GU
Zhouye GU 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: 20240048739Abstract: A method is provided for encoding a digital video to improve perceptual quality. The method includes receiving a digital video at a video encoder, providing a perceptual quantizer function defined by P ? Q ? ( L ) = ( c 1 + c 2 ? L m 1 1 + c 3 ? L m 1 ) m 2 , wherein L is a luminance value, c1, c2, c3, and m1 are parameters with fixed values, and m2 is a parameter with a variable value, adapting the perceptual quantizer function by adjusting the value of the m2 parameter based on different luminance value ranges found within a coding level of the digital video, encoding the digital video into a bitstream using, in part, the perceptual quantizer function, transmitting the bitstream to a decoder, and transmitting the value of the m2 parameter to the decoder for each luminance value range in the coding level.Type: ApplicationFiled: August 18, 2023Publication date: February 8, 2024Applicant: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra
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Publication number: 20230362376Abstract: A method for transforming high dynamic range (HDR) video data into standard dynamic range (SDR) video data and encoding the SDR video data so that the HDR video data may be recovered at the decoder includes generating a tone map describing a transformation applied to the HDR video data to generate the SDR video data. The generated tone map describes the transformation as the multiplication of each HDR pixel in the HDR video data by a scalar to generate the SDR video data. The tone map is then modeled as a reshaping transfer function and the HDR video data is processed by the reshaping transfer function to generate the SDR video data. The reshaping transfer function is then inverted and described in a self-referential metadata structure. The SDR video data is then encoded including the metadata structure defining the inverse reshaping transfer function.Type: ApplicationFiled: July 19, 2023Publication date: November 9, 2023Applicant: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye GU, David M. Baylon, Ajay Luthra, Yue Yu
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Patent number: 11750814Abstract: A method for transforming high dynamic range (HDR) video data into standard dynamic range (SDR) video data and encoding the SDR video data so that the HDR video data may be recovered at the decoder includes generating a tone map describing a transformation applied to the HDR video data to generate the SDR video data. The generated tone map describes the transformation as the multiplication of each HDR pixel in the HDR video data by a scalar to generate the SDR video data. The tone map is then modeled as a reshaping transfer function and the HDR video data is processed by the reshaping transfer function to generate the SDR video data. The reshaping transfer function is then inverted and described in a self-referential metadata structure. The SDR video data is then encoded including the metadata structure defining the inverse reshaping transfer function.Type: GrantFiled: January 4, 2023Date of Patent: September 5, 2023Assignee: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra, Yue Yu
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Publication number: 20230276061Abstract: A method is provided for encoding a digital video to provide for improved color mapping.Type: ApplicationFiled: May 9, 2023Publication date: August 31, 2023Applicant: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra
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Publication number: 20230254488Abstract: A system and method for regenerating high dynamic range (HDR) video data from encoded video data, extracts, from the encoded video data, a self-referential metadata structure specifying a video data reshaping transfer function. The video data reshaping transfer function is regenerated using data from the metadata structure and the extracted reshaping transfer function is used to generate the HDR video data by applying decoded video data values to the reshaping transfer function.Type: ApplicationFiled: April 11, 2023Publication date: August 10, 2023Applicant: ARRIS Enterprises LLCInventors: David M. Baylon, Zhouye Gu, Ajay Luthra, Koohyar Minoo, Yue Yu
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Patent number: 11677967Abstract: A method is provided for encoding a digital video to provide for improved color mapping.Type: GrantFiled: April 21, 2016Date of Patent: June 13, 2023Assignee: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra
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Patent number: 11659183Abstract: A system and method for regenerating high dynamic range (HDR) video data from encoded video data, extracts, from the encoded video data, a self-referential metadata structure specifying a video data reshaping transfer function. The video data reshaping transfer function is regenerated using data from the metadata structure and the extracted reshaping transfer function is used to generate the HDR video data by applying decoded video data values to the reshaping transfer function.Type: GrantFiled: June 14, 2021Date of Patent: May 23, 2023Assignee: ARRIS Enterprises LLCInventors: David M. Baylon, Zhouye Gu, Ajay Luthra, Koohyar Minoo, Yue Yu
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Publication number: 20230141102Abstract: A method for transforming high dynamic range (HDR) video data into standard dynamic range (SDR) video data and encoding the SDR video data so that the HDR video data may be recovered at the decoder includes generating a tone map describing a transformation applied to the HDR video data to generate the SDR video data. The generated tone map describes the transformation as the multiplication of each HDR pixel in the HDR video data by a scalar to generate the SDR video data. The tone map is then modeled as a reshaping transfer function and the HDR video data is processed by the reshaping transfer function to generate the SDR video data. The reshaping transfer function is then inverted and described in a self-referential metadata structure. The SDR video data is then encoded including the metadata structure defining the inverse reshaping transfer function.Type: ApplicationFiled: January 4, 2023Publication date: May 11, 2023Applicant: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra, Yue Yu
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Patent number: 11575899Abstract: A method for transforming high dynamic range (HDR) video data into standard dynamic range (SDR) video data and encoding the SDR video data so that the HDR video data may be recovered at the decoder includes generating a tone map describing a transformation applied to the HDR video data to generate the SDR video data. The generated tone map describes the transformation as the multiplication of each HDR pixel in the HDR video data by a scalar to generate the SDR video data. The tone map is then modeled as a reshaping transfer function and the HDR video data is processed by the reshaping transfer function to generate the SDR video data. The reshaping transfer function is then inverted and described in a self-referential metadata structure. The SDR video data is then encoded including the metadata structure defining the inverse reshaping transfer function.Type: GrantFiled: February 8, 2022Date of Patent: February 7, 2023Assignee: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra, Yue Yu
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Publication number: 20220368908Abstract: A method of encoding a digital video data applies adaptive pre-processing to data representing high dynamic range (HDR) and/or wide color gamut (WCG) image data prior to encoding and complementary post-processing to the data after decoding in order to allow at least partial reproduction of the HDR and/or WCG data. The example methods apply one or more color space conversions, and a perceptual transfer functions to the data prior to quantization. The example methods apply inverse perceptual transfer functions and inverse color space conversions after decoding to recover the HDR and/or WCG data. The transfer functions are adaptive so that different transfer functions may be applied to video data sets including different groups of frames, frames or processing windows in a single frame. Information on the data set and information on the applied transfer function is passed as metadata from the encoder to the decoder.Type: ApplicationFiled: May 26, 2022Publication date: November 17, 2022Applicant: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra
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Publication number: 20220279195Abstract: A method is provided for encoding a digital video to improve perceptual quality. The method includes receiving a digital video at a video encoder, providing a perceptual quantizer function defined by PQ ? ( L ) = ( c 1 + c 2 ? L m 1 1 + c 3 ? L m 1 ) ? m 2 , wherein L is a luminance value, c1, c2, c3, and m1 are parameters with fixed values, and m2 is a parameter with a variable value, adapting the perceptual quantizer function by adjusting the value of the m2 parameter based on different luminance value ranges found within a coding level of the digital video, encoding the digital video into a bitstream using, in part, the perceptual quantizer function, transmitting the bitstream to a decoder, and transmitting the value of the m2 parameter to the decoder for each luminance value range in the coding level.Type: ApplicationFiled: May 18, 2022Publication date: September 1, 2022Applicant: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra
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Patent number: 11375193Abstract: A method of encoding a digital video data applies adaptive pre-processing to data representing high dynamic range (HDR) and/or wide color gamut (WCG) image data prior to encoding and complementary post-processing to the data after decoding in order to allow at least partial reproduction of the HDR and/or WCG data. The example methods apply one or more color space conversions, and a perceptual transfer functions to the data prior to quantization. The example methods apply inverse perceptual transfer functions and inverse color space conversions after decoding to recover the HDR and/or WCG data. The transfer functions are adaptive so that different transfer functions may be applied to video data sets including different groups of frames, frames or processing windows in a single frame. Information on the data set and information on the applied transfer function is passed as metadata from the encoder to the decoder.Type: GrantFiled: September 8, 2020Date of Patent: June 28, 2022Assignee: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra
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Patent number: 11368701Abstract: A method is provided for encoding a digital video to improve perceptual quality. The method includes receiving a digital video at a video encoder, providing a perceptual quantizer function defined by P ? Q ? ( L ) = ( c 1 + c 2 ? L m 1 1 + c 3 ? L m 1 ) m 2 , wherein L is a luminance value, c1, c2, c3, and m1 are parameters with fixed values, and m2 is a parameter with a variable value, adapting the perceptual quantizer function by adjusting the value of the m2 parameter based on different luminance value ranges found within a coding level of the digital video, encoding the digital video into a bitstream using, in part, the perceptual quantizer function, transmitting the bitstream to a decoder, and transmitting the value of the m2 parameter to the decoder for each luminance value range in the coding level.Type: GrantFiled: June 23, 2020Date of Patent: June 21, 2022Assignee: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra
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Publication number: 20220166981Abstract: A method for transforming high dynamic range (HDR) video data into standard dynamic range (SDR) video data and encoding the SDR video data so that the HDR video data may be recovered at the decoder includes generating a tone map describing a transformation applied to the HDR video data to generate the SDR video data. The generated tone map describes the transformation as the multiplication of each HDR pixel in the HDR video data by a scalar to generate the SDR video data. The tone map is then modeled as a reshaping transfer function and the HDR video data is processed by the reshaping transfer function to generate the SDR video data. The reshaping transfer function is then inverted and described in a self-referential metadata structure. The SDR video data is then encoded including the metadata structure defining the inverse reshaping transfer function.Type: ApplicationFiled: February 8, 2022Publication date: May 26, 2022Applicant: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra, Yue Yu
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Patent number: 11277610Abstract: A method for transforming high dynamic range (HDR) video data into standard dynamic range (SDR) video data and encoding the SDR video data so that the HDR video data may be recovered at the decoder includes generating a tone map describing a transformation applied to the HDR video data to generate the SDR video data. The generated tone map describes the transformation as the multiplication of each HDR pixel in the HDR video data by a scalar to generate the SDR video data. The tone map is then modeled as a reshaping transfer function and the HDR video data is processed by the reshaping transfer function to generate the SDR video data. The reshaping transfer function is then inverted and described in a self-referential metadata structure. The SDR video data is then encoded including the metadata structure defining the inverse reshaping transfer function.Type: GrantFiled: September 23, 2016Date of Patent: March 15, 2022Assignee: ARRIS Enterprises LLCInventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra, Yue Yu
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Publication number: 20220021893Abstract: A method of decoding a bitstream comprising decoding the bitstream into color values and metadata items indicating information about adaptive post-processing operations performed by a decoder, performing high dynamic range (HDR) adaptation operations on the color values based on the metadata items, and performing fixed post-processing operations to reconstruct an HDR video from the color values, wherein the HDR adaptation operations convert color values into a format expected by the fixed post-processing operations.Type: ApplicationFiled: September 15, 2021Publication date: January 20, 2022Inventors: Zhouye Gu, Koohyar Minoo
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Patent number: 11153589Abstract: A method of decoding a bitstream comprising decoding the bitstream into color values and metadata items indicating information about adaptive post-processing operations performed by a decoder, performing high dynamic range (HDR) adaptation operations on the color values based on the metadata items, and performing fixed post-processing operations to reconstruct an HDR video from the color values, wherein the HDR adaptation operations convert color values into a format expected by the fixed post-processing operations.Type: GrantFiled: August 21, 2019Date of Patent: October 19, 2021Assignee: ARRIS Enterprises LLCInventors: Zhouye Gu, Koohyar Minoo
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Publication number: 20210314570Abstract: A system and method for regenerating high dynamic range (HDR) video data from encoded video data, extracts, from the encoded video data, a self-referential metadata structure specifying a video data reshaping transfer function. The video data reshaping transfer function is regenerated using data from the metadata structure and the extracted reshaping transfer function is used to generate the HDR video data by applying decoded video data values to the reshaping transfer function.Type: ApplicationFiled: June 14, 2021Publication date: October 7, 2021Inventors: David M. Baylon, Zhouye Gu, Ajay Luthra, Koohyar Minoo, Yue Yu
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Patent number: 11070809Abstract: A system and method for regenerating high dynamic range (HDR) video data from encoded video data, extracts, from the encoded video data, a self-referential metadata structure specifying a video data reshaping transfer function. The video data reshaping transfer function is regenerated using data from the metadata structure and the extracted reshaping transfer function is used to generate the HDR video data by applying decoded video data values to the reshaping transfer function.Type: GrantFiled: May 21, 2020Date of Patent: July 20, 2021Assignee: ARRIS Enterprises LLCInventors: David M. Baylon, Zhouye Gu, Ajay Luthra, Koohyar Minoo, Yue Yu
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Publication number: 20210006793Abstract: A method of encoding a digital video data applies adaptive pre-processing to data representing high dynamic range (HDR) and/or wide color gamut (WCG) image data prior to encoding and complementary post-processing to the data after decoding in order to allow at least partial reproduction of the HDR and/or WCG data. The example methods apply one or more color space conversions, and a perceptual transfer functions to the data prior to quantization. The example methods apply inverse perceptual transfer functions and inverse color space conversions after decoding to recover the HDR and/or WCG data. The transfer functions are adaptive so that different transfer functions may be applied to video data sets including different groups of frames, frames or processing windows in a single frame. Information on the data set and information on the applied transfer function is passed as metadata from the encoder to the decoder.Type: ApplicationFiled: September 8, 2020Publication date: January 7, 2021Inventors: Koohyar Minoo, Zhouye Gu, David M. Baylon, Ajay Luthra