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公开(公告)号：US11747144B2
公开(公告)日：2023-09-05
申请号：US16498721
申请日：2018-03-29
Applicant: Agency for Science, Technology and Research
Inventor： Zhengguo Li , Jinghong Zheng , Zijian Orson Zhu , Qinyuan Ren , Kong Wah Wan , Wei Yun Yau
CPC classification number: G01C21/1656 , G01C21/188 , G05D1/0253 , G06T7/246 , G06T7/73 , G06T2207/30244
Abstract: A camera-based localization system is provided. The camera-based localization system may assist an unmanned vehicle to continue its operation in a GPS-denied environment with minimal increase in vehicular cost and payload. In one aspect, a method, a computer-readable medium, and an apparatus for localization via visual inertial odometry are provided. The apparatus may construct an optical flow based on feature points across a first video frame and a second video frame captured by a camera of the apparatus. The apparatus may refine the angular velocity and the linear velocity corresponding to the second video frame via solving a quadratic optimization problem constructed based on the optical flow, the initial values of the angular velocity and the linear velocity corresponding to the second video frame. The apparatus may estimate the pose of the apparatus based on the refined angular velocity and the refined linear velocity.
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公开(公告)号：US20200025570A1
公开(公告)日：2020-01-23
申请号：US16498721
申请日：2018-03-29
Applicant: Agency for Science, Technology and Research
Inventor： Zhengguo Li , Jinghong Zheng , Zijian Orson Zhu , Qinyuan Ren , Kong Wah Wan , Wei Yun Yau
Abstract: A camera-based localization system is provided. The camera-based localization system may assist an unmanned vehicle to continue its operation in a GPS-denied environment with minimal increase in vehicular cost and payload. In one aspect, a method, a computer-readable medium, and an apparatus for localization via visual inertial odometry are provided. The apparatus may construct an optical flow based on feature points across a first video frame and a second video frame captured by a camera of the apparatus. The apparatus may refine the angular velocity and the linear velocity corresponding to the second video frame via solving a quadratic optimization problem constructed based on the optical flow, the initial values of the angular velocity and the linear velocity corresponding to the second video frame. The apparatus may estimate the pose of the apparatus based on the refined angular velocity and the refined linear velocity.
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公开(公告)号：US09754356B2
公开(公告)日：2017-09-05
申请号：US14783763
申请日：2014-04-11
Applicant: Agency for Science, Technology and Research
Inventor： Zhengguo Li , Jinghong Zheng , Zijian Zhu , Shiqian Wu , Wei Yao , Susanto Rahardja
CPC classification number: G06T5/00 , G06T3/20 , G06T5/002 , G06T5/003 , G06T5/50 , G06T7/13 , G06T2207/10016 , G06T2207/20012 , G06T2207/20024 , G06T2207/20028 , G06T2207/20076 , G06T2207/20192 , H04N1/4092
Abstract: In various embodiments of the present disclosure, there is provided a method for processing an input image. The method includes generating a base layer portion and a detail layer portion from the input image by carrying out a linear transformation of pixels of a guidance image, and determining, for each of the pixels of the guidance image, a variance of the pixels in a surrounding window of pixels. Further, the method includes determining, for each of the pixels of the guidance image, a weight value of the pixels based on the determined variance, wherein the pixels are weighted in the linear transformation according to the determined weight value. Accordingly, a system for processing an input image is also provided.
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公开(公告)号：US20150154468A1
公开(公告)日：2015-06-04
申请号：US14372837
申请日：2013-01-18
Applicant: Agency for Science, Technology and Research
Inventor： Zhengguo Li , Jinghong Zheng , Zijian Zhu , Shiqian Wu , Susanto Rahardja
CPC classification number: G06K9/52 , G06K9/46 , G06T5/008 , G06T5/20 , G06T2207/20208
Abstract: Embodiments provide a method for processing an input image having a plurality of pixels, wherein each pixel has a pixel position. The method may include determining, for each pixel position, a vector based on the input image; and determining, for each pixel position, a detail value for the pixel position based on the determined vectors at a plurality of neighboring pixel positions within a predetermined neighboring block of the pixel position.
Abstract translation: 实施例提供了一种用于处理具有多个像素的输入图像的方法，其中每个像素具有像素位置。 该方法可以包括针对每个像素位置确定基于输入图像的向量; 以及基于在所述像素位置的预定相邻块内的多个相邻像素位置处的所确定的矢量，针对每个像素位置确定所述像素位置的细节值。
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Patent Agency Ranking
5.发明授权公开(公告)号：US09521685B2
公开(公告)日：2016-12-13
申请号：US14430283
申请日：2012-09-21
Inventor： Peng Hui Tan , Jinghong Zheng , Sumei Sun , Zhengguo Li , Kedi Wu , Yuejun Wei
IPC: H04W72/12 , H04L29/06 , H04N21/231 , H04N21/845 , H04L12/851 , H04N19/127 , H04N19/164 , H04N19/172 , H04N19/177 , H04L12/833 , H04N21/61 , H04L12/801
CPC classification number: H04W72/1242 , H04L47/14 , H04L47/2408 , H04L47/2458 , H04L65/4069 , H04L65/607 , H04L65/80 , H04N19/127 , H04N19/164 , H04N19/172 , H04N19/177 , H04N21/23106 , H04N21/6131 , H04N21/8455 , H04W72/1231
Abstract: The present invention is a circuit arrangement for a wireless cellular network. The circuit arrangement includes a determiner configured to determine a priority value of each packet of a plurality of packets based on at least a position of a video frame in a group of pictures and a type of the video frame, the video frame or a part thereof being contained in the packet, wherein the type of video frame comprises I frame data or P frame data; and wherein the determiner is further configured to set the priority value of a packet including I frame data lower than the priority value of at least one other packet including P frame data; and a controller configured to control scheduling of the packet based on the determined priority value for a communication device in a wireless cellular network. A method of determining a priority of packet scheduling is also disclosed.
Abstract translation: 本发明是一种用于无线蜂窝网络的电路装置。 该电路装置包括：一个确定器，被配置为基于至少一组图像中的视频帧的位置和视频帧，视频帧或其一部分的类型来确定多个分组中的每个分组的优先级值 被包含在分组中，其中视频帧的类型包括I帧数据或P帧数据; 并且其中所述确定器还被配置为设置包括比包括P帧数据的至少一个其他分组的优先级值低的I帧数据的分组的优先级值; 以及控制器，被配置为基于所确定的无线蜂窝网络中的通信设备的优先级值来控制所述分组的调度。 还公开了一种确定分组调度优先级的方法。
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6.发明申请公开(公告)号：US20150250001A1
公开(公告)日：2015-09-03
申请号：US14430283
申请日：2012-09-21
Inventor： Peng Hui Tan , Jinghong Zheng , Sumei Sun , Zhengguo Li , Kedi Wu , Yuejun Wei
IPC: H04W72/12 , H04N19/164 , H04N19/172 , H04N19/127 , H04L12/833 , H04N19/177
CPC classification number: H04W72/1242 , H04L47/14 , H04L47/2408 , H04L47/2458 , H04L65/4069 , H04L65/607 , H04L65/80 , H04N19/127 , H04N19/164 , H04N19/172 , H04N19/177 , H04N21/23106 , H04N21/6131 , H04N21/8455 , H04W72/1231
Abstract: The present invention is a circuit arrangement for a wireless cellular network. The circuit arrangement includes a determiner configured to determine a priority value of each packet of a plurality of packets based on at least a position of a video frame in a group of pictures and a type of the video frame, the video frame or a part thereof being contained in the packet, wherein the type of video frame comprises I frame data or P frame data; and wherein the determiner is further configured to set the priority value of a packet including I frame data lower than the priority value of at least one other packet including P frame data; and a controller configured to control scheduling of the packet based on the determined priority value for a communication device in a wireless cellular network. A method of determining a priority of packet scheduling is also disclosed.
Abstract translation: 本发明是一种用于无线蜂窝网络的电路装置。 该电路装置包括：一个确定器，被配置为基于至少一组图像中的视频帧的位置和视频帧，视频帧或其一部分的类型来确定多个分组中的每个分组的优先级值 被包含在分组中，其中视频帧的类型包括I帧数据或P帧数据; 并且其中所述确定器还被配置为设置包括比包括P帧数据的至少一个其他分组的优先级值低的I帧数据的分组的优先级值; 以及控制器，被配置为基于所确定的无线蜂窝网络中的通信设备的优先级值来控制所述分组的调度。 还公开了一种确定分组调度优先级的方法。
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公开(公告)号：US09979908B2
公开(公告)日：2018-05-22
申请号：US15301011
申请日：2015-03-31
Applicant: Agency for Science, Technology and Research
Inventor： Zhengguo Li , Jinghong Zheng
CPC classification number: H04N5/35563 , G06T3/4015 , G06T5/009 , G06T5/50 , G06T2200/21 , G06T2207/10144 , G06T2207/20208 , H04N5/35554 , H04N9/045
Abstract: According to various embodiments, an image processing device may be provided. The image processing device may include: an input circuit configured to receive input image data including pixels related to varying exposure times; an interpolation circuit configured to determine an output image based on an interpolation based on the input image data; and an output circuit configured to output the output image.
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公开(公告)号：US20180122051A1
公开(公告)日：2018-05-03
申请号：US15563454
申请日：2016-03-30
Applicant: Agency for Science, Technology and Research
Inventor： Zhengguo Li , Jinghong Zheng
Abstract: Various embodiments provide a method of processing an input image to generate a de-hazed image. The method may include determining an atmospheric light based on the input image; determining a medium transmission map by applying an edge-preserving smoothing filter to the input image; and recovering scene radiances of the input image based on the determined atmospheric light and the determined medium transmission map. The recovered scene radiances form the de-hazed image.
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公开(公告)号：US09466007B2
公开(公告)日：2016-10-11
申请号：US14372837
申请日：2013-01-18
Applicant: Agency for Science, Technology and Research
Inventor： Zhengguo Li , Jinghong Zheng , Zijian Zhu , Shiqian Wu , Susanto Rahardja
CPC classification number: G06K9/52 , G06K9/46 , G06T5/008 , G06T5/20 , G06T2207/20208
Abstract: Embodiments provide a method for processing an input image having a plurality of pixels, wherein each pixel has a pixel position. The method may include determining, for each pixel position, a vector based on the input image; and determining, for each pixel position, a detail value for the pixel position based on the determined vectors at a plurality of neighboring pixel positions within a predetermined neighboring block of the pixel position.
Abstract translation: 实施例提供了一种用于处理具有多个像素的输入图像的方法，其中每个像素具有像素位置。 该方法可以包括针对每个像素位置确定基于输入图像的向量; 以及基于在所述像素位置的预定相邻块内的多个相邻像素位置处的所确定的矢量，针对每个像素位置确定所述像素位置的细节值。
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