Patents by Inventor Chengjie Tu

Chengjie Tu 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).

  • Publication number: 20240195973
    Abstract: Techniques and tools for encoding enhancement layer video with quantization that varies spatially and/or between color channels are presented, along with corresponding decoding techniques and tools. For example, an encoding tool determines whether quantization varies spatially over a picture, and the tool also determines whether quantization varies between color channels in the picture. The tool signals quantization parameters for macroblocks in the picture in an encoded bit stream. In some implementations, to signal the quantization parameters, the tool predicts the quantization parameters, and the quantization parameters are signaled with reference to the predicted quantization parameters. A decoding tool receives the encoded bit stream, predicts the quantization parameters, and uses the signaled information to determine the quantization parameters for the macroblocks of the enhancement layer video. The decoding tool performs inverse quantization that can vary spatially and/or between color channels.
    Type: Application
    Filed: February 21, 2024
    Publication date: June 13, 2024
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Shankar Regunathan, Shijun Sun, Chengjie Tu, Chih-Lung Lin
  • Publication number: 20240195972
    Abstract: Techniques and tools for encoding enhancement layer video with quantization that varies spatially and/or between color channels are presented, along with corresponding decoding techniques and tools. For example, an encoding tool determines whether quantization varies spatially over a picture, and the tool also determines whether quantization varies between color channels in the picture. The tool signals quantization parameters for macroblocks in the picture in an encoded bit stream. In some implementations, to signal the quantization parameters, the tool predicts the quantization parameters, and the quantization parameters are signaled with reference to the predicted quantization parameters. A decoding tool receives the encoded bit stream, predicts the quantization parameters, and uses the signaled information to determine the quantization parameters for the macroblocks of the enhancement layer video. The decoding tool performs inverse quantization that can vary spatially and/or between color channels.
    Type: Application
    Filed: February 21, 2024
    Publication date: June 13, 2024
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Shankar Regunathan, Shijun Sun, Chengjie Tu, Chih-Lung Lin
  • Publication number: 20240171745
    Abstract: Techniques and tools for encoding enhancement layer video with quantization that varies spatially and/or between color channels are presented, along with corresponding decoding techniques and tools. For example, an encoding tool determines whether quantization varies spatially over a picture, and the tool also determines whether quantization varies between color channels in the picture. The tool signals quantization parameters for macroblocks in the picture in an encoded bit stream. In some implementations, to signal the quantization parameters, the tool predicts the quantization parameters, and the quantization parameters are signaled with reference to the predicted quantization parameters. A decoding tool receives the encoded bit stream, predicts the quantization parameters, and uses the signaled information to determine the quantization parameters for the macroblocks of the enhancement layer video. The decoding tool performs inverse quantization that can vary spatially and/or between color channels.
    Type: Application
    Filed: January 31, 2024
    Publication date: May 23, 2024
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Shankar Regunathan, Shijun Sun, Chengjie Tu, Chih-Lung Lin
  • Publication number: 20240163438
    Abstract: Techniques and tools for encoding enhancement layer video with quantization that varies spatially and/or between color channels are presented, along with corresponding decoding techniques and tools. For example, an encoding tool determines whether quantization varies spatially over a picture, and the tool also determines whether quantization varies between color channels in the picture. The tool signals quantization parameters for macroblocks in the picture in an encoded bit stream. In some implementations, to signal the quantization parameters, the tool predicts the quantization parameters, and the quantization parameters are signaled with reference to the predicted quantization parameters. A decoding tool receives the encoded bit stream, predicts the quantization parameters, and uses the signaled information to determine the quantization parameters for the macroblocks of the enhancement layer video. The decoding tool performs inverse quantization that can vary spatially and/or between color channels.
    Type: Application
    Filed: December 29, 2023
    Publication date: May 16, 2024
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Shankar Regunathan, Shijun Sun, Chengjie Tu, Chih-Lung Lin
  • Patent number: 11902525
    Abstract: Techniques and tools for encoding enhancement layer video with quantization that varies spatially and/or between color channels are presented, along with corresponding decoding techniques and tools. For example, an encoding tool determines whether quantization varies spatially over a picture, and the tool also determines whether quantization varies between color channels in the picture. The tool signals quantization parameters for macroblocks in the picture in an encoded bit stream. In some implementations, to signal the quantization parameters, the tool predicts the quantization parameters, and the quantization parameters are signaled with reference to the predicted quantization parameters. A decoding tool receives the encoded bit stream, predicts the quantization parameters, and uses the signaled information to determine the quantization parameters for the macroblocks of the enhancement layer video. The decoding tool performs inverse quantization that can vary spatially and/or between color channels.
    Type: Grant
    Filed: November 4, 2022
    Date of Patent: February 13, 2024
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Shankar Regunathan, Shijun Sun, Chengjie Tu, Chih-Lung Lin
  • Patent number: 11871017
    Abstract: A video data processing method is provided. In the method, video features of a target video are acquired. The video features include background features and key part region features. An expected quality of a key part of the target video is acquired. The expected quality of the key part corresponds to an image quality of the key part in a transcoded target video after the target video is transcoded. A background prediction transcoding parameter of the target video is determined based on the background features and an expected quality of a background. The expected quality of the background corresponds to an overall image quality of the transcoded target video. A target transcoding parameter prediction value is determined based on the background features, the key part region features, and the background prediction transcoding parameter. The target video is transcoded according to the target transcoding parameter prediction value.
    Type: Grant
    Filed: April 19, 2022
    Date of Patent: January 9, 2024
    Assignee: Tencent Technology (Shenzhen) Company Limited
    Inventors: Shishen Xu, Jingran Wu, Jun Zhao, Juncheng Ma, Yaqing Li, Chengjie Tu, Liang Wang
  • Patent number: 11863749
    Abstract: A digital media encoder/decoder uses a flexible quantization technique that provides the ability to vary quantization along various dimensions of the encoded digital media data, including spatial, frequency sub bands and color channels. The codec utilizes a signaling scheme to signal various permutations of flexible quantization combinations efficiently for primary usage scenarios. When a choice of quantizer is available, the codec efficiently encodes the current quantizer by defining a subset of quantizers and indexes the current quantizer from the set.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: January 2, 2024
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Chengjie Tu, Sridhar Srinivasan
  • Patent number: 11843775
    Abstract: A digital media encoder/decoder uses a flexible quantization technique that provides the ability to vary quantization along various dimensions of the encoded digital media data, including spatial, frequency sub bands and color channels. The codec utilizes a signaling scheme to signal various permutations of flexible quantization combinations efficiently for primary usage scenarios. When a choice of quantizer is available, the codec efficiently encodes the current quantizer by defining a subset of quantizers and indexes the current quantizer from the set.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: December 12, 2023
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Chengjie Tu, Sridhar Srinivasan
  • Patent number: 11778186
    Abstract: A digital media encoder/decoder uses a flexible quantization technique that provides the ability to vary quantization along various dimensions of the encoded digital media data, including spatial, frequency sub bands and color channels. The codec utilizes a signaling scheme to signal various permutations of flexible quantization combinations efficiently for primary usage scenarios. When a choice of quantizer is available, the codec efficiently encodes the current quantizer by defining a subset of quantizers and indexes the current quantizer from the set.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: October 3, 2023
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Chengjie Tu, Sridhar Srinivasan
  • Patent number: 11778187
    Abstract: A digital media encoder/decoder uses a flexible quantization technique that provides the ability to vary quantization along various dimensions of the encoded digital media data, including spatial, frequency sub bands and color channels. The codec utilizes a signaling scheme to signal various permutations of flexible quantization combinations efficiently for primary usage scenarios. When a choice of quantizer is available, the codec efficiently encodes the current quantizer by defining a subset of quantizers and indexes the current quantizer from the set.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: October 3, 2023
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Chengjie Tu, Sridhar Srinivasan
  • Publication number: 20230055524
    Abstract: Techniques and tools for encoding enhancement layer video with quantization that varies spatially and/or between color channels are presented, along with corresponding decoding techniques and tools. For example, an encoding tool determines whether quantization varies spatially over a picture, and the tool also determines whether quantization varies between color channels in the picture. The tool signals quantization parameters for macroblocks in the picture in an encoded bit stream. In some implementations, to signal the quantization parameters, the tool predicts the quantization parameters, and the quantization parameters are signaled with reference to the predicted quantization parameters. A decoding tool receives the encoded bit stream, predicts the quantization parameters, and uses the signaled information to determine the quantization parameters for the macroblocks of the enhancement layer video. The decoding tool performs inverse quantization that can vary spatially and/or between color channels.
    Type: Application
    Filed: November 4, 2022
    Publication date: February 23, 2023
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Shankar Regunathan, Shijun Sun, Chengjie Tu, Chih-Lung Lin
  • Patent number: 11528481
    Abstract: Techniques and tools for encoding enhancement layer video with quantization that varies spatially and/or between color channels are presented, along with corresponding decoding techniques and tools. For example, an encoding tool determines whether quantization varies spatially over a picture, and the tool also determines whether quantization varies between color channels in the picture. The tool signals quantization parameters for macroblocks in the picture in an encoded bit stream. In some implementations, to signal the quantization parameters, the tool predicts the quantization parameters, and the quantization parameters are signaled with reference to the predicted quantization parameters. A decoding tool receives the encoded bit stream, predicts the quantization parameters, and uses the signaled information to determine the quantization parameters for the macroblocks of the enhancement layer video. The decoding tool performs inverse quantization that can vary spatially and/or between color channels.
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: December 13, 2022
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Shankar Regunathan, Shijun Sun, Chengjie Tu, Chih-Lung Lin
  • Publication number: 20220261960
    Abstract: A computing device obtains a to-be-processed video frame sequence of a first resolution. For each to-be-processed video frame in the to-be-processed video frame sequence, the computing device: (i) performs resolution reconstruction according to a resolution reconstruction model so as to obtain an initial reconstructed video frame of a second resolution, (ii) determines a contour region in the initial reconstructed video frame; and (iii) performs contour enhancement on the contour region to obtain a target reconstructed video frame. The computing device generates a reconstructed video frame sequence of the second resolution according to a plurality of target reconstructed video frames corresponding to the plurality of to-be-processed video frames.
    Type: Application
    Filed: May 6, 2022
    Publication date: August 18, 2022
    Inventors: Ru Wang, Yaqing Li, Chengjie Tu, Shiyao Xiong, Linyan Jiang, Longtao Peng
  • Publication number: 20220256153
    Abstract: A digital media encoder/decoder uses a flexible quantization technique that provides the ability to vary quantization along various dimensions of the encoded digital media data, including spatial, frequency sub bands and color channels. The codec utilizes a signaling scheme to signal various permutations of flexible quantization combinations efficiently for primary usage scenarios. When a choice of quantizer is available, the codec efficiently encodes the current quantizer by defining a subset of quantizers and indexes the current quantizer from the set.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 11, 2022
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Chengjie Tu, Sridhar Srinivasan
  • Publication number: 20220256154
    Abstract: A digital media encoder/decoder uses a flexible quantization technique that provides the ability to vary quantization along various dimensions of the encoded digital media data, including spatial, frequency sub bands and color channels. The codec utilizes a signaling scheme to signal various permutations of flexible quantization combinations efficiently for primary usage scenarios. When a choice of quantizer is available, the codec efficiently encodes the current quantizer by defining a subset of quantizers and indexes the current quantizer from the set.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 11, 2022
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Chengjie Tu, Sridhar Srinivasan
  • Publication number: 20220248022
    Abstract: A digital media encoder/decoder uses a flexible quantization technique that provides the ability to vary quantization along various dimensions of the encoded digital media data, including spatial, frequency sub bands and color channels. The codec utilizes a signaling scheme to signal various permutations of flexible quantization combinations efficiently for primary usage scenarios. When a choice of quantizer is available, the codec efficiently encodes the current quantizer by defining a subset of quantizers and indexes the current quantizer from the set.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 4, 2022
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Chengjie Tu, Sridhar Srinivasan
  • Publication number: 20220248040
    Abstract: A video data processing method is provided. In the method, video features of a target video are acquired. The video features include background features and key part region features. An expected quality of a key part of the target video is acquired. The expected quality of the key part corresponds to an image quality of the key part in a transcoded target video after the target video is transcoded. A background prediction transcoding parameter of the target video is determined based on the background features and an expected quality of a background. The expected quality of the background corresponds to an overall image quality of the transcoded target video. A target transcoding parameter prediction value is determined based on the background features, the key part region features, and the background prediction transcoding parameter. The target video is transcoded according to the target transcoding parameter prediction value.
    Type: Application
    Filed: April 19, 2022
    Publication date: August 4, 2022
    Applicant: Tencent Technology (Shenzhen) Company Limited
    Inventors: Shishen XU, Jingran WU, Jun ZHAO, Juncheng MA, Yaqing LI, Chengjie TU, Liang WANG
  • Publication number: 20220248021
    Abstract: A digital media encoder/decoder uses a flexible quantization technique that provides the ability to vary quantization along various dimensions of the encoded digital media data, including spatial, frequency sub bands and color channels. The codec utilizes a signaling scheme to signal various permutations of flexible quantization combinations efficiently for primary usage scenarios. When a choice of quantizer is available, the codec efficiently encodes the current quantizer by defining a subset of quantizers and indexes the current quantizer from the set.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 4, 2022
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Chengjie Tu, Sridhar Srinivasan
  • Publication number: 20220232222
    Abstract: A video data processing method is provided to a server. The method includes: obtaining a video sequence associated with a video source and obtaining a video quality standard parameter associated with the video sequence; determining a video feature according to video quality standard parameter; predicting an encoding bit rate according to the video quality standard parameter and the video feature; and encoding the video sequence according to the encoding bit rate to obtain an encoded video sequence associated with the video source.
    Type: Application
    Filed: April 4, 2022
    Publication date: July 21, 2022
    Inventors: Jingran WU, Shishen XU, Jun ZHAO, Hao LI, Yaqing LI, Chengjie TU, Zirong ZHU, Liang WANG
  • Patent number: 11343503
    Abstract: A digital media encoder/decoder uses a flexible quantization technique that provides the ability to vary quantization along various dimensions of the encoded digital media data, including spatial, frequency sub bands and color channels. The codec utilizes a signaling scheme to signal various permutations of flexible quantization combinations efficiently for primary usage scenarios. When a choice of quantizer is available, the codec efficiently encodes the current quantizer by defining a subset of quantizers and indexes the current quantizer from the set.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: May 24, 2022
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Chengjie Tu, Sridhar Srinivasan