Patents by Inventor Zongming Guo
Zongming Guo 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: 10285112Abstract: Techniques are generally described related to a mobile ad-hoc network. One example method for transmitting data from a source node to a destination node in a mobile ad-hoc network may include receiving a route reply packet from a first node by a second node; identifying the route reply packet as an overheard route reply packet by the second node; adding a first routing entry in a routing table of the second node and the first routing entry being associated with the overheard route reply packet by the second node; broadcasting a routing entry added message associated with the first routing entry by the second node; receiving data transmitted from a third node and the data being transmitted by the third node responsive to the routing entry added message by the second node; and sending data received from the third node towards the destination node via an active route established based on the first routing entry in the routing table of the second node by the second node.Type: GrantFiled: May 22, 2017Date of Patent: May 7, 2019Assignee: Peking UniversityInventors: Xinggong Zhang, Zongming Guo
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Publication number: 20170273003Abstract: Techniques are generally described related to a mobile ad-hoc network. One example method for transmitting data from a source node to a destination node in a mobile ad-hoc network may include receiving a route reply packet from a first node by a second node; identifying the route reply packet as an overheard route reply packet by the second node; adding a first routing entry in a routing table of the second node and the first routing entry being associated with the overheard route reply packet by the second node; broadcasting a routing entry added message associated with the first routing entry by the second node; receiving data transmitted from a third node and the data being transmitted by the third node responsive to the routing entry added message by the second node; and sending data, received from, the third node towards the destination node via an active route established based on the first routing entry in the routing table of the second node by the second node.Type: ApplicationFiled: May 22, 2017Publication date: September 21, 2017Applicant: PEKING UNIVERSITYInventors: Xinggong Zhang, Zongming Guo
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Patent number: 9722936Abstract: A method and apparatus for rate adaption of HTTP stream media is disclosed in this invention. The method comprises: acquiring from a server a stream media with a selected video rate at a client adopting the TCP protocol at its transmission layer and the HTTP protocol at its application layer, wherein the selected video rate allows an amount of buffered data to be maintained in a predetermined range in a buffer for buffering the stream media under a current download rate speed. This invention may improve user experience.Type: GrantFiled: September 9, 2013Date of Patent: August 1, 2017Assignees: PEKING UNIVERSITY, PEKING UNIVERSITY FOUNDER GROUP CO., LTD., BEIJING FOUNDER ELECTRONICS CO., LTD.Inventors: Chao Zhou, Xinggong Zhang, Zongming Guo
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Patent number: 9672590Abstract: An image interpolation method and device based on an autoregressive model. The method first, interpolating a low-resolution image up to a target scale to obtain an interpolated image M; determining a local area W in the image M to be interpolated, establishing two autoregressive models for each pixel point in the local area W except for the edge pixel points, and determining an initial objective function F0 according to the autoregressive models; down sampling the local area W except for the edge pixel points to the same size as the low-resolution image to obtain a local area W?, subtracting a corresponding area in the low-resolution image from W? one pixel value by one pixel value, and adding the result to the initial objective function F0 to obtain an objective function F; performing iteration on the objective function F to obtain a pixel point value of a center block of W.Type: GrantFiled: November 6, 2013Date of Patent: June 6, 2017Assignees: PEKING UNIVERSITY FOUNDER GROUP CO. LTD., BEIJING FOUNDER ELECTRONICS CO., LTD.Inventors: Mading Li, Jiaying Liu, Jie Ren, Zongming Guo
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Patent number: 9661551Abstract: Techniques are generally described related to a mobile ad-hoc network. One example method for transmitting data from a source node to a destination node in a mobile ad-hoc network may include receiving a route reply packet from a first node by a second node; identifying the route reply packet as an overheard route reply packet by the second node; adding a first routing entry in a routing table of the second node and the first routing entry being associated with the overheard route reply packet by the second node; broadcasting a routing entry added message associated with the first routing entry by the second node; receiving data transmitted from a third node and the data being transmitted by the third node responsive to the routing entry added message by the second node; and sending data received from the third node towards the destination node via an active route established based on the first routing entry in the routing table of the second node by the second node.Type: GrantFiled: July 8, 2010Date of Patent: May 23, 2017Assignee: PEKING UNIVERSITYInventors: Xinggong Zhang, Zongming Guo
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Patent number: 9471964Abstract: The present disclosure provides a non-local mean-based video denoising method, so as to remove illumination variation in a video by using image histogram specification filtering processing. The present disclosure further provides a non-local mean-based video denoising apparatus. The apparatus comprises a filtering module used for remove illumination variation in a video by using image histogram specification filtering processing. In the present disclosure, self-adaptive adjustment can be carried out on a change of an illumination condition.Type: GrantFiled: March 5, 2015Date of Patent: October 18, 2016Assignees: PEKING UNIVERSITY, PEKING UNIVERSITY FOUNDER GROUP CO., LTD., BEIJING FOUNDER ELECTRONICS CO., LTD.Inventors: Jie Ren, Jiaying Liu, Zongming Guo, Yue Zhuo
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Publication number: 20150262334Abstract: An image interpolation method and device based on an autoregressive model. The method first, interpolating a low-resolution image up to a target scale to obtain an interpolated image M; determining a local area W in the image M to be interpolated, establishing two autoregressive models for each pixel point in the local area W except for the edge pixel points, and determining an initial objective function F0 according to the autoregressive models; down sampling the local area W except for the edge pixel points to the same size as the low-resolution image to obtain a local area W?, subtracting a corresponding area in the low-resolution image from W? one pixel value by one pixel value, and adding the result to the initial objective function F0 to obtain an objective function F; performing iteration on the objective function F to obtain a pixel point value of a center block of W.Type: ApplicationFiled: November 6, 2013Publication date: September 17, 2015Applicants: PEKING UNIVERSITY, PEKING UNIVERSITY FOUNDER GROUP CO., LTD., BEIJING FOUNDER ELECTRONICS CO., LTD.Inventors: Mading Li, Jiaying Liu, Jie Ren, Zongming Guo
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Publication number: 20150244636Abstract: A method and apparatus for rate adaption of HTTP stream media is disclosed in this invention. The method comprises: acquiring from a server a stream media with a selected video rate at a client adopting the TCP protocol at its transmission layer and the HTTP protocol at its application layer, wherein the selected video rate allows an amount of buffered data to be maintained in a predetermined range in a buffer for buffering the stream media under a current download rate speed. This invention may improve user experience.Type: ApplicationFiled: September 9, 2013Publication date: August 27, 2015Applicants: PEKING UNIVERSITY, PEKING UNIVERSITY FOUNDER GROUP CO., LTD., BEIJING FOUNDER ELECTRONICS CO., LTD.Inventors: Chao Zhou, Xinggong Zhang, Zongming Guo
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Patent number: 9111367Abstract: The present invention relates to the field of digital image enhancement technologies, and more particularly to a non-locality-based super-resolution reconstruction method and device, so as to solve the problem of relatively low resolution of an image after non-locality-based super-resolution reconstruction in the prior art.Type: GrantFiled: December 13, 2012Date of Patent: August 18, 2015Assignees: Peking University, Peking University Founder Group Co., Ltd., Beijing Founder Electronics Co., Ltd.Inventors: Jiaying Liu, Yue Zhou, Jie Ren, Zongming Guo
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Patent number: 9106404Abstract: Disclosed is a method for transmitting a video, which is used for increasing video transmission and receiving quality. The method comprises: generating multiple layers of video streams; in accordance with an obtained first distortion value, obtaining a corresponding first antennae/video matching matrix; separately dispatching each layer of video streams to respective antennae in accordance with the first antennae/video matching matrix; and transmitting same in accordance with the dispatched video streams. Also disclosed are a device for achieving the method, and a method and device for receiving a video.Type: GrantFiled: December 28, 2012Date of Patent: August 11, 2015Assignees: PEKING UNIVERSITY, PEKING UNIVERSITY FOUNDER GROUP CO., LTD., BEIJING FOUNDER ELECTRONICS CO.Inventors: Chao Zhou, Xinggong Zhang, Zongming Guo
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Publication number: 20150178899Abstract: The present disclosure provides a non-local mean-based video denoising method, so as to remove illumination variation in a video by using image histogram specification filtering processing. The present disclosure further provides a non-local mean-based video denoising apparatus. The apparatus comprises a filtering module used for remove illumination variation in a video by using image histogram specification filtering processing. In the present disclosure, self-adaptive adjustment can be carried out on a change of an illumination condition.Type: ApplicationFiled: March 5, 2015Publication date: June 25, 2015Inventors: Jie REN, Jiaying LIU, Zongming GUO, Yue ZHUO
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Publication number: 20150055721Abstract: Disclosed is a method for transmitting a video, which is used for increasing video transmission and receiving quality. The method comprises: generating multiple layers of video streams; in accordance with an obtained first distortion value, obtaining a corresponding first antennae/video matching matrix; separately dispatching each layer of video streams to respective antennae in accordance with the first antennae/video matching matrix; and transmitting same in accordance with the dispatched video streams. Also disclosed are a device for achieving the method, and a method and device for receiving a video.Type: ApplicationFiled: December 28, 2012Publication date: February 26, 2015Inventors: Chao Zhou, Xinggong Zhang, Zongming Guo
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Publication number: 20140161176Abstract: Disclosed are a method and an apparatus for controlling video quality fluctuation based on scalable video coding. The method includes: performing scalable video coding on video data to be transmitted to generate a base layer and at least one enhancement layer; sending the video data after the scalable video coding to a terminal device; determining a currently expected bit rate according to a transmission status of the video data on a currently used channel, the currently expected bit rate being the maximum data transmission bit rate that the predicted currently used channel can sustain; acquiring the currently highest enhancement layer according to the currently expected bit rate, the sum of all bit rates occupied when transmitting video data under the currently highest enhancement layer being no larger than the currently expected bit rate; and sending the video data under the currently highest enhancement layer to the terminal device.Type: ApplicationFiled: January 4, 2013Publication date: June 12, 2014Inventors: Jun Sun, Yilei Wang, Keji Chen, Zongming Guo
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Publication number: 20140133780Abstract: The present invention relates to the field of digital image enhancement technologies, and more particularly to a non-locality-based super-resolution reconstruction method and device, so as to solve the problem of relatively low resolution of an image after non-locality-based super-resolution reconstruction in the prior art.Type: ApplicationFiled: December 13, 2012Publication date: May 15, 2014Applicants: Peking University, Beijing Founder Electronics Co., Ltd., Perking University Founder Group Co., Ltd.Inventors: Jiaying Liu, Yue Zhou, Jie Ren, Zongming Guo
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Publication number: 20140064615Abstract: Disclosed is a method and a device for denoising a video based on non-local means, which is capable of making self-adaptive adjustment in response to illumination variance of the frame in the video.Type: ApplicationFiled: September 4, 2013Publication date: March 6, 2014Applicants: Peking University, Beijing Founder Electronics Co., Ltd., Peking University Founder Group Co., Ltd.Inventors: Jie Ren, Jiaying Liu, Zongming Guo, Yue Zhuo
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Patent number: 8406286Abstract: A method for selecting the best mode of intra prediction coding for video coding applied in video coding and decoding field is provided. The method includes: constructing a rate distortion cost function based on an estimated rate to be encoded; computing the rate distortion costs for all predictive modes by using the constructed function, and selecting the predictive mode with the minimum rate distortion cost as the best mode of intra prediction coding according to the computing result. Accordingly, a device for selecting the best mode of intra prediction coding for video coding is provided. By the method, the selected mode is closer to the best mode selected by original rate distortion optimization model, thereby the need to code every block actually in the process of rate distortion optimization is effectively avoided.Type: GrantFiled: July 18, 2008Date of Patent: March 26, 2013Assignees: Peking University Founder Group Co., Ltd., Beijing Founder Electronics Co., Ltd., Peking UniversityInventors: Jiaying Liu, Zongming Guo, Zhihui Zheng, Lieseng Yang
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Publication number: 20120044864Abstract: Techniques are generally described related to a mobile ad-hoc network. One example method for transmitting data from a source node to a destination node in a mobile ad-hoc network may include receiving a route reply packet from a first node by a second node; identifying the route reply packet as an overheard route reply packet by the second node; adding a first routing entry in a routing table of the second node and the first routing entry being associated with the overheard route reply packet by the second node; broadcasting a routing entry added message associated with the first routing entry by the second node; receiving data transmitted from a third node and the data being transmitted by the third node responsive to the routing entry added message by the second node; and sending data received from the third node towards the destination node via an active route established based on the first routing entry in the routing table of the second node by the second node.Type: ApplicationFiled: July 8, 2010Publication date: February 23, 2012Applicant: PEKING UNIVERSITYInventors: Xinggong Zhang, Zongming Guo
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Publication number: 20100290521Abstract: A method for selecting the best mode of intra prediction coding for video coding applied in video coding and decoding field is provided. The method includes: constructing a rate distortion cost function based on an estimated rate to be encoded; computing the rate distortion costs for all predictive modes by using the constructed function, and selecting the predictive mode with the minimum rate distortion cost as the best mode of intra prediction coding according to the computing result. Accordingly, a device for selecting the best mode of intra prediction coding for video coding is provided. By the method, the selected mode is closer to the best mode selected by original rate distortion optimization model, thereby the need to code every block actually in the process of rate distortion optimization is effectively avoided.Type: ApplicationFiled: July 18, 2008Publication date: November 18, 2010Applicants: PEKING UNIVERSITY FOUNDER GROUP CO., LTD., BEIJING FOUNDER ELECTRONICS CO., LTD., PEKING UNIVERSITYInventors: Jiaying Liu, Zongming Guo, Zhihui Zheng, Lieseng Yang