Patents by Inventor Jiantong ZHOU
Jiantong ZHOU 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: 20240054623Abstract: This application relates to the field of image processing technologies, and discloses an image processing method and system, and a device, to resolve a problem that tone mapping greatly affects perception of a binocular 3D image. Based on a disparity map of a binocular image, a tone mapping curve is determined for a display device to display an image, instead of being generated merely based on image content. This makes a contrast of a tone mapped binocular image reach at least a level before tone mapping, thereby meeting a minimum disparity variation requirement for 3D perception by human eyes, and improving 3D perception of a 3D image displayed by the display device.Type: ApplicationFiled: October 25, 2023Publication date: February 15, 2024Inventors: Hu CHEN, Quanhe YU, Weiwei XU, Jiantong ZHOU, Ruihua LI
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Patent number: 11902350Abstract: This application provides a video processing method and apparatus. The method includes: adding, by a server, perception attribute information of an object and spatial location information of the object to a video bitstream or a video file, and encapsulating the video bitstream or the video file, where the perception attribute information is used to indicate a property presented when the object is perceived by a user; and obtaining, by a terminal device, the video bitstream or the video file that carries the perception attribute information of the object and the spatial location information of the object, and performing perception rendering on a perception attribute of the object based on behavior of the user, the perception attribute information of the object and the spatial location information of the object.Type: GrantFiled: November 24, 2020Date of Patent: February 13, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Yi Song, Peiyun Di, Xuhong Zeng, Maozheng Liu, Jun Zha, Jiantong Zhou
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Patent number: 11875487Abstract: A high dynamic range image processing method and apparatus, to improve a display effect of a high dynamic range image. The method includes: obtaining image information of a to-be-processed high dynamic range (HDR) image, the image information includes a maximum RGB component value of a first pixel corresponding to a first percentage and a maximum RGB component value of a second pixel corresponding to a second percentage; determining a maximum reference value of the HDR image; determining a maximum luminance modification value of the HDR image based on the maximum reference value and a plurality of preset hierarchy intervals, where the maximum luminance modification value is used to modify a largest value in maximum RGB component values of the plurality of pixels included in the HDR image; and adjusting a dynamic range of the HDR image based on the maximum luminance modification value.Type: GrantFiled: April 14, 2022Date of Patent: January 16, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Quanhe Yu, Haitao Yang, Jiantong Zhou
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Patent number: 11876977Abstract: An intra-frame decoding method includes obtaining, from a video code stream, prediction mode information of a first signal component of a current block, determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode; obtaining a predicted value of a first signal component sampling point of the current block; and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.Type: GrantFiled: June 10, 2022Date of Patent: January 16, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Xingyu Zhang, Oscar Au, Haitao Yang, Jiantong Zhou
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Patent number: 11765480Abstract: This application provides a pixel collection circuit comprising an optical-to-electrical converter circuit configured to convert a collected optical signal into an analog signal; an analog-to-digital converter circuit configured to: receive the analog signal from the optical-to-electrical converter circuit; and perform analog-to-digital conversion on the analog signal to obtain a digital signal; a differential circuit configured to: receive the digital signal from the analog-to-digital converter circuit; and obtain a difference signal between a digital signal of a previous triggering moment and the digital signal of a current triggering moment; the previous triggering moment and the current triggering moment are determined by at least a digital clock signal; a comparison circuit configured to receive the difference signal from the differential circuit, and output a pulse signal.Type: GrantFiled: January 24, 2022Date of Patent: September 19, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Yifan Fu, Shan Gao, Jiantong Zhou, Jing Xiao
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Publication number: 20220385920Abstract: An intra-frame decoding method includes obtaining, from a video code stream, prediction mode information of a first signal component of a current block, determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode; obtaining a predicted value of a first signal component sampling point of the current block, and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.Type: ApplicationFiled: June 10, 2022Publication date: December 1, 2022Inventors: Xingyu Zhang, Oscar Au, Haitao Yang, Jiantong Zhou
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Patent number: 11490092Abstract: The present disclosure relates to encoding of video image using coding parameters, which are adapted based on events related to motion within the video image. Image content is captured by a standard image sensor and an event-triggered sensor, providing an event-signal indicating changes (e.g. amount and time-spatial location) of image intensity. Objects are detected within the video image, based on the event signal assessing motion of the object, and their textures extracted. The spatial-time coding parameters of the video image are determined based on the location and strength of the event signal, and the extent to which the detected objects moves.Type: GrantFiled: February 8, 2021Date of Patent: November 1, 2022Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Zhijie Zhao, Yuntan Fang, Jun Zha, Hu Chen, Jiantong Zhou
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Publication number: 20220335962Abstract: An audio encoding method and device and an audio decoding method and device are provided. The audio encoding method includes: obtaining a current frame of an audio signal, where the current frame includes a high frequency band signal and a low frequency band signal; obtaining a compatible layer encoding parameter of the current frame based on the high frequency band signal and the low frequency band signal; obtaining an enhancement layer encoding parameter of the current frame based on the high frequency band signal; and performing bitstream multiplexing on the compatible layer encoding parameter and the enhancement layer encoding parameter to obtain an encoded bitstream.Type: ApplicationFiled: July 5, 2022Publication date: October 20, 2022Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Bin WANG, Bingyin XIA, Zhe WANG, Jiantong ZHOU
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Publication number: 20220245774Abstract: A high dynamic range image processing method and apparatus, to improve a display effect of a high dynamic range image. The method includes: obtaining image information of a to-be-processed high dynamic range (HDR) image, the image information includes a maximum RGB component value of a first pixel corresponding to a first percentage and a maximum RGB component value of a second pixel corresponding to a second percentage; determining a maximum reference value of the HDR image; determining a maximum luminance modification value of the HDR image based on the maximum reference value and a plurality of preset hierarchy intervals, where the maximum luminance modification value is used to modify a largest value in maximum RGB component values of the plurality of pixels included in the HDR image; and adjusting a dynamic range of the HDR image based on the maximum luminance modification value.Type: ApplicationFiled: April 14, 2022Publication date: August 4, 2022Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Quanhe YU, Haitao YANG, Jiantong ZHOU
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Patent number: 11375205Abstract: An intra-frame decoding method includes obtaining, from a video code stream, prediction mode information of a first signal component of a current block, determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode, obtaining a predicted value of a first signal component sampling point of the current block, and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.Type: GrantFiled: November 25, 2020Date of Patent: June 28, 2022Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Xingyu Zhang, Oscar Au, Haitao Yang, Jiantong Zhou
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Publication number: 20220150433Abstract: This application provides a pixel collection circuit comprising an optical-to-electrical converter circuit configured to convert a collected optical signal into an analog signal; an analog-to-digital converter circuit configured to: receive the analog signal from the optical-to- electrical converter circuit; and perform analog-to-digital conversion on the analog signal to obtain a digital signal; a differential circuit configured to: receive the digital signal from the analog-to-digital converter circuit; and obtain a difference signal between a digital signal of a previous triggering moment and the digital signal of a current triggering moment; the previous triggering moment and the current triggering moment are determined by at least a digital clock signal; a comparison circuit configured to receive the difference signal from the differential circuit, and output a pulse signal.Type: ApplicationFiled: January 24, 2022Publication date: May 12, 2022Inventors: Yifan FU, Shan GAO, Jiantong ZHOU, Jing XIAO
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Patent number: 11310445Abstract: This application provides a dynamic vision sensor. The sensor converts an optical signal into an electrical signal by using a photoelectric conversion unit, to generate a photovoltage; performs second-order difference on the photovoltage by using a second-order differential circuit; and generates a second-order event signal based on a result of second-order difference. A camera including the sensor can generate an image based on the second-order event signal, where the image represents a change of a light change speed.Type: GrantFiled: March 29, 2021Date of Patent: April 19, 2022Assignee: Huawei Technologies Co., Ltd.Inventors: Zhaolei Xiao, Jiantong Zhou, Yuntan Fang, Shan Gao, Zhenhua Wu, Jing Xiao
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Patent number: 11310524Abstract: A method includes obtaining a first motion vector of a motion compensation unit included in an affine code block. The method also includes determining a second motion vector based on the first motion vector, where a precision of the second motion vector matches a motion vector precision of a storage unit corresponding to the motion compensation unit. The method further includes determining a third motion vector based on the second motion vector, where there is a preset correspondence between the third motion vector and the second motion vector, and the third motion vector is used for subsequent encoding/decoding processing.Type: GrantFiled: April 24, 2020Date of Patent: April 19, 2022Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Huanbang Chen, Haitao Yang, Shan Gao, Jiantong Zhou, Shan Liu
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Patent number: 11109060Abstract: An image prediction method and apparatus includes obtaining predicted motion information of an image block; determining an initial predicted block of the image block according to the predicted motion information and a reference image of the image block; performing, according to the predicted motion information, L iterative searches in the reference image using an integer pixel step size to obtain an intermediate predicted block of the image block; performing a single search in the reference image using a fractional pixel step size to obtain M predicted blocks of the image block; determining a target predicted block of the image block according to the M predicted blocks and the intermediate predicted block; and obtaining a predicted value of a pixel value of the image block according to a pixel value of the target predicted block.Type: GrantFiled: March 11, 2020Date of Patent: August 31, 2021Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Shan Gao, Huanbang Chen, Haitao Yang, Jiantong Zhou, Shan Liu, Sriram Sethuraman, Jay Shingala, Jeeva Raj A, Sagar Kotecha
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Publication number: 20210218913Abstract: This application provides a dynamic vision sensor. The sensor converts an optical signal into an electrical signal by using a photoelectric conversion unit, to generate a photovoltage; performs second-order difference on the photovoltage by using a second-order differential circuit; and generates a second-order event signal based on a result of second-order difference. A camera including the sensor can generate an image based on the second-order event signal, where the image represents a change of a light change speed.Type: ApplicationFiled: March 29, 2021Publication date: July 15, 2021Inventors: Zhaolei Xiao, Jiantong Zhou, Yuntan Fang, Shan Gao, Zhenhua Wu, Jing Xiao
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Publication number: 20210174092Abstract: The invention relates to an image processing apparatus for extracting a feature from an image of a scene. The apparatus may comprises processing circuitry configured, in response to a feature extraction event, to extract a feature from first image data representing a first image of a scene, wherein the feature extraction event is based on second image data representing a second image of the scene. The image processing apparatus may include an event driven sensor and the second image may include may include a positive/negative amount of the intensity change and the location of the intensity change. Moreover, the invention relates to a corresponding image processing method.Type: ApplicationFiled: February 12, 2021Publication date: June 10, 2021Inventors: Zhijie ZHAO, Yuntan FANG, Jun ZHA, Hu CHEN, Jiantong ZHOU
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Publication number: 20210168372Abstract: The present disclosure relates to encoding of video image using coding parameters, which are adapted based on events related to motion within the video image. Image content is captured by a standard image sensor and an event-triggered sensor, providing an event-signal indicating changes (e.g. amount and time-spatial location) of image intensity. Objects are detected within the video image, based on the event signal assessing motion of the object, and their textures extracted. The spatial-time coding parameters of the video image are determined based on the location and strength of the event signal, and the extent to which the detected objects moves.Type: ApplicationFiled: February 8, 2021Publication date: June 3, 2021Inventors: Zhijie Zhao, Yuntan Fang, Jun Zha, Hu Chen, Jiantong Zhou
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Publication number: 20210105487Abstract: An intra-frame decoding method includes obtaining, from a video code stream, prediction mode information of a first signal component of a current block, determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode, obtaining a predicted value of a first signal component sampling point of the current block, and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.Type: ApplicationFiled: November 25, 2020Publication date: April 8, 2021Inventors: Xingyu Zhang, Oscar Au, Haitao Yang, Jiantong Zhou
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Publication number: 20210084096Abstract: This application provides a video processing method and apparatus. The method includes: adding, by a server, perception attribute information of an object and spatial location information of the object to a video bitstream or a video file, and encapsulating the video bitstream or the video file, where the perception attribute information is used to indicate a property presented when the object is perceived by a user; and obtaining, by a terminal device, the video bitstream or the video file that carries the perception attribute information of the object and the spatial location information of the object, and performing perception rendering on a perception attribute of the object based on behavior of the user, the perception attribute information of the object and the spatial location information of the object.Type: ApplicationFiled: November 24, 2020Publication date: March 18, 2021Inventors: Yi SONG, Peiyun DI, Xuhong ZENG, Maozheng LIU, Jun ZHA, Jiantong ZHOU
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Patent number: 10855993Abstract: A chroma component prediction method, comprising obtaining reference samples of a current block, wherein the reference samples comprise a luma reference sample array and a chroma reference sample array, obtaining a correlation parameter based on the luma reference sample array and the chroma reference sample array, and calculating a prediction value of a chroma component of the current block based on a luma component of the current block and the correlation parameter, wherein the reference samples comprise samples on top of the current block and on a top right of the current block, or the reference samples comprise samples on a left of the current block and on a bottom left of the current block.Type: GrantFiled: October 10, 2019Date of Patent: December 1, 2020Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Xingyu Zhang, Oscar Au, Haitao Yang, Jiantong Zhou