Patents by Inventor Koohyar Minoo
Koohyar Minoo 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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Patent number: 11659168Abstract: A method of decoding JVET video, comprising defining a coding unit (CU) template within a decoded area of a video frame, the CU template being positioned above and/or to the left of a current decoding position for which data was intra predicted, defining a search window within the decoded area, the search window being adjacent to the CU template, generating a plurality of candidate prediction templates based on pixel values in the search window, each of the plurality of candidate prediction templates being generated using different intra prediction modes, calculating a matching cost between the CU template and each of the plurality of candidate prediction templates, selecting an intra prediction mode that generated the candidate prediction template that had the lowest matching cost relative to the CU template, and generating a prediction CU for the current decoding position based on the intra prediction mode.Type: GrantFiled: March 14, 2022Date of Patent: May 23, 2023Assignee: ARRIS Enterprises LLCInventors: Krit Panusopone, Limin Wang, Koohyar Minoo
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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: 11622121Abstract: A Scalable Video Coding (SVC) process is provided for scalable video coding that takes into account color gamut primaries along with spatial resolution. The process provides for re-sampling using video color data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to enable improved encoding and decoding in an enhancement layer (EL) or higher layers taking into account color conversion between layers. Examples of applicable SVC include MPEG-4 Advanced Video Coding (AVC) and High Efficiency Video Coding (HEVC). With the SVC process, video data expressed in one color gamut space can be used for prediction in encoding with a possibly different color space, and accommodation for different spatial resolution and bit-depth can be made as well.Type: GrantFiled: May 9, 2022Date of Patent: April 4, 2023Assignee: ARRIS Enterprises LLCInventors: Koohyar Minoo, Ajay K. Luthra, David M. Baylon
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Patent number: 11589074Abstract: A method of encoding a digital video, comprising receiving a high dynamic range (HDR) master of a video, a reference standard dynamic range (SDR) master of the video, and target SDR display properties at an encoder, finding a color volume transform that converts HDR values from the HDR master into SDR values that, when converted for display on the target SDR display, are substantially similar to SDR values in the reference SDR master, converting HDR values from the HDR master into SDR values using the color volume transform, generating metadata items that identifies the color volume transform to decoders, and encoding the SDR values into a bitstream.Type: GrantFiled: May 12, 2020Date of Patent: February 21, 2023Assignee: ARRIS Enterprises LLCInventor: Koohyar Minoo
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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: 20220385929Abstract: A sampling filter process is provided for scalable video coding. The process provides for re-sampling using video data Obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system using adaptive phase shifting to improve quality in Scalable High efficiency Video Coding (SHVC). In order to compensate for phase offsets introduced by, downsampling an appropriate phase offset adjustment is made for upsampling in SHVC with an appropriate offset included for proper luma/chroma color space positions. In one approach the luma/chroma phase offset is specified and a filter is selected to apply the appropriate phase change.Type: ApplicationFiled: August 11, 2022Publication date: December 1, 2022Applicant: ARRIS Enterprises LLCInventors: Koohyar Minoo, David M. Baylon, Ajay K. Luthra
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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: 20220321898Abstract: A process for determining the selection of filters and input samples is provided for scalable video coding. The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to improve quality in Scalable High Efficiency Video Coding (SHVC). In order to accommodate other applications such as interlace/progressive scalability and to increase the resolution of the alignment between layers, it is proposed that the phase offset adjustment parameters be signaled.Type: ApplicationFiled: June 14, 2022Publication date: October 6, 2022Applicant: ARRIS Enterprises LLCInventors: Koohyar MINOO, David M. BAYLON, Ajay LUTHRA
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Patent number: 11451803Abstract: A sampling filter process is provided for scalable video coding The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system using adaptive phase shifting to improve quality in Scalable High efficiency Video Coding (SHVC). In order to compensate for phase offsets introduced by downsampling an appropriate phase offset adjustment is made for upsampling in SHVC with an appropriate offset included for proper luma/chroma color space positions. In one approach the luma/chroma phase offset is specified and a filter is selected to apply the appropriate phase change.Type: GrantFiled: April 6, 2021Date of Patent: September 20, 2022Assignee: ARRIS Enterprises LLCInventors: Koohyar Minoo, David M. Baylon, Ajay K. Luthra
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Publication number: 20220286694Abstract: A process for determining the selection of filters and input samples is provided for scalable video coding. The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to improve quality in Scalable High Efficiency Video Coding (SHVC). It is proposed that a single scaled reference layer offset be derived from two scaled reference layer offset parameters, and vice-versa. It is also proposed that a single scaled reference layer offset or a single reference layer offset be derived from a combination of a scaled reference layer offset parameter and a reference layer offset parameter.Type: ApplicationFiled: May 23, 2022Publication date: September 8, 2022Applicant: ARRIS Enterprises LLCInventors: Koohyar Minoo, 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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Publication number: 20220272366Abstract: A Scalable Video Coding (SVC) process is provided for scalable video coding that takes into account color gamut primaries along with spatial resolution. The process provides for re-sampling using video color data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to enable improved encoding and decoding in an enhancement layer (EL) or higher layers taking into account color conversion between layers. Examples of applicable SVC include MPEG-4 Advanced Video Coding (AVC) and High Efficiency Video Coding (HEVC). With the SVC process, video data expressed in one color gamut space can be used for prediction in encoding with a possibly different color space, and accommodation for different spatial resolution and bit-depth can be made as well.Type: ApplicationFiled: May 9, 2022Publication date: August 25, 2022Applicant: ARRIS Enterprises LLCInventors: Koohyar Minoo, Ajay K. Luthra, David M. Baylon
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Patent number: 11394986Abstract: A process for determining the selection of filters and input samples is provided for scalable video coding. The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to improve quality in Scalable High Efficiency Video Coding (SHVC). In order to accommodate other applications such as interlace/progressive scalability and to increase the resolution of the alignment between layers, it is proposed that the phase offset adjustment parameters be signaled.Type: GrantFiled: July 31, 2020Date of Patent: July 19, 2022Assignee: ARRIS Enterprises LLCInventors: Koohyar Minoo, David M. Baylon, Ajay Luthra
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Publication number: 20220210407Abstract: A method of decoding JVET video, comprising defining a coding unit (CU) template within a decoded area of a video frame, the CU template being positioned above and/or to the left of a current decoding position for which data was intra predicted, defining a search window within the decoded area, the search window being adjacent to the CU template, generating a plurality of candidate prediction templates based on pixel values in the search window, each of the plurality of candidate prediction templates being generated using different intra prediction modes, calculating a matching cost between the CU template and each of the plurality of candidate prediction templates, selecting an intra prediction mode that generated the candidate prediction template that had the lowest matching cost relative to the CU template, and generating a prediction CU for the current decoding position based on the intra prediction mode.Type: ApplicationFiled: March 14, 2022Publication date: June 30, 2022Applicant: ARRIS Enterprises LLCInventors: Krit PANUSOPONE, Limin WANG, Koohyar MINOO
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Patent number: 11375215Abstract: A process for determining the selection of filters and input samples is provided for scalable video coding. The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to improve quality in Scalable High Efficiency Video Coding (SHVC). It is proposed that a single scaled reference layer offset be derived from two scaled reference layer offset parameters, and vice-versa. It is also proposed that a single scaled reference layer offset or a single reference layer offset be derived from a combination of a scaled reference layer offset parameter and a reference layer offset parameter.Type: GrantFiled: April 22, 2020Date of Patent: June 28, 2022Assignee: ARRIS Enterprises LLCInventors: Koohyar Minoo, 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: 20220191514Abstract: A method of decoding JVET video, comprising receiving a bitstream indicating how a coding tree unit was partitioned into coding units according to a partitioning structure that allows nodes to be split according to a partitioning technique. An intra direction mode for a coding unit may be selected, as well as one or more of the plurality of reference lines to generate at least one predictor for the intra direction mode. A predictor may be generated from reference samples within each selected reference line by combining predicted pixel values based on a projected position on a main reference line in combination with predicted pixel values based on a projected position on a side reference line. The predicted pixel values are weighted according to a weight parameter, wherein the weight parameter is determined based on a shift conversion factor.Type: ApplicationFiled: March 4, 2022Publication date: June 16, 2022Applicant: ARRIS Enterprises LLCInventors: Krit PANUSOPONE, Koohyar MINOO, Yue YU, Limin WANG
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Patent number: 11363281Abstract: A Scalable Video Coding (SVC) process for scalable video coding takes into account color gamut primaries along with spatial resolution. The process for re-sampling uses video color data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to enable improved encoding and decoding in an enhancement layer (EL) or higher layers taking into account color conversion between layers. Examples of applicable SVC include MPEG-4 and High Efficiency Video Coding (HEVC). With the SVC process, video data expressed in one color gamut space can be used for prediction in encoding with a different color space.Type: GrantFiled: March 19, 2015Date of Patent: June 14, 2022Assignee: ARRIS Enterprises LLCInventors: Koohyar Minoo, Ajay K. Luthra, David M. Baylon
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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