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1.发明授权公开(公告)号：US11461930B2
公开(公告)日：2022-10-04
申请号：US16739476
申请日：2020-01-10
发明人： Fuqiang Ma , Hongzhen Xue , Lili Chen , Hao Zhang , Gang Li , Minglei Chu
摘要： A camera calibration plate, a camera calibration method and device, and an image acquisition system are described. The camera calibration plate includes a planar plate body, and a plurality of groups of concentric circles on the planar plate body. The plurality of groups of concentric circles are same and include solid circle center points. The plurality of groups of concentric circles are distributed in an array.
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公开(公告)号：US11379960B2
公开(公告)日：2022-07-05
申请号：US16718731
申请日：2019-12-18
发明人： Gang Li , Lili Chen , Jiankang Sun , Fuqiang Ma , Liyang Cui , Minglei Chu , Yachong Xue
摘要： Embodiments of the present disclosure provides an image processing method, comprising: acquiring an initial image comprising an image of pupil; acquiring an accumulative histogram set of grayscale values of pixels in the initial image; determining a threshold for binarizing the initial image according to a grayscale value corresponding to a target region in respective accumulative histograms in the accumulative histogram set, wherein the target region corresponds to the image of pupil in the initial image; and binarizing the initial image according to the threshold. An image processing apparatus and a wearable device are further provided.
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公开(公告)号：US11270657B2
公开(公告)日：2022-03-08
申请号：US16982550
申请日：2020-04-13
发明人： Chenxi Zhao , Hao Zhang , Lili Chen , Minglei Chu , Xiangjun Peng , Yachong Xue , Gang Li , Shuo Zhang , Yaoyu Lv , Mingyang Yan
摘要： The present disclosure provides a method for driving a display device, an apparatus for driving a display device, a display device and a computer readable medium. The display device includes a backlight module, and the backlight module includes a plurality of backlight partitions. The driving method may include: determining backlight signal values of the plurality of backlight partitions according to input grayscale values of pixels in an image to be displayed; determining a backlight jump value of each of the plurality of backlight partitions according to the backlight signal values of the plurality of backlight partition; adjusting the backlight signal values of the plurality of backlight partitions according to the backlight jump values to obtain adjusted backlight signal values; and driving the backlight module to emit light using the adjusted backlight signal values of the plurality of backlight partitions.
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公开(公告)号：US11367195B2
公开(公告)日：2022-06-21
申请号：US16910754
申请日：2020-06-24
发明人： Yaoyu Lv , Lili Chen , Hao Zhang , Fuqiang Ma , Jiankang Sun , Shuo Zhang , Gang Li , Yachong Xue , Xiangjun Peng , Chenxi Zhao
摘要： An image segmentation method, an image segmentation apparatus, an image segmentation device are provided, the image segmentation method including: extracting, from a current frame of a video image, a skeleton two-dimensional estimation and a skeleton three-dimensional estimation of a human three-dimensional skeleton; obtaining a target three-dimensional skeleton based on the skeleton two-dimensional estimation and the skeleton three-dimensional estimation; implementing image segmentation based on the target three-dimensional skeleton; wherein the human three-dimensional skeleton has multiple nodes, and the video image is a two-dimensional image, when calculating the target three-dimensional skeleton in the current frame, by comprehensively considering the skeleton two-dimensional estimation and skeleton three-dimensional skeleton estimation of the human three-dimensional skeleton in the current frame, the accuracy and robustness of the obtained target three-dimensional skeleton can be improved, thereby improving the accuracy of image segmentation.
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5.发明授权公开(公告)号：US11334982B2
公开(公告)日：2022-05-17
申请号：US16859332
申请日：2020-04-27
发明人： Xiangjun Peng , Yunqi Wang , Chenxi Zhao , Yachong Xue , Gang Li , Yaoyu Lv , Shuo Zhang , Minglei Chu , Lili Chen , Hao Zhang
IPC分类号： G06T7/00
摘要： The disclosure provides a method for defect classification, including: extracting a low-level feature of a defect region from a defect image; encoding the low-level feature by using a defect dictionary to obtain a middle-level semantic feature corresponding to the low-level feature; classifying a defect in the defect region of the defect image into one of a plurality of defect categories based on the middle-level semantic feature, wherein the defect dictionary includes a defect intra-category dictionary and a defect inter-category dictionary.
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公开(公告)号：US20200311888A1
公开(公告)日：2020-10-01
申请号：US16718731
申请日：2019-12-18
发明人： Gang Li , Lili Chen , Jiankang Sun , Fuqiang Ma , Liyang Cui , Minglei Chu , Yachong Xue
摘要： Embodiments of the present disclosure provides an image processing method, comprising: acquiring an initial image comprising an image of pupil; acquiring an accumulative histogram set of grayscale values of pixels in the initial image; determining a threshold for binarizing the initial image according to a grayscale value corresponding to a target region in respective accumulative histograms in the accumulative histogram set, wherein the target region corresponds to the image of pupil in the initial image; and binarizing the initial image according to the threshold. An image processing apparatus and a wearable device are further provided.
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公开(公告)号：US20200285917A1
公开(公告)日：2020-09-10
申请号：US16556697
申请日：2019-08-30
发明人： Xiangjun Peng , Yunqi Wang , Chenxi Zhao , Yachong Xue , Gang Li , Yaoyu Lv , Shuo Zhang , Huidong He , Yadong Ding , Minglei Chu , Lili Chen , Hao Zhang
摘要： An image classification method, a computer device, and a medium are disclosed. The method includes: acquiring a middle-level semantic feature of an image to be classified through a visual dictionary; and classifying the image to be classified according to the middle-level semantic feature of the image to be classified using a classification model based on middle-level semantic features.
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公开(公告)号：US11997397B2
公开(公告)日：2024-05-28
申请号：US17790388
申请日：2021-05-25
发明人： Yachong Xue , Hao Zhang , Lili Chen , Jiankang Sun , Guixin Yan , Xiaolei Liu , Gang Li
IPC分类号： H04N23/80 , G06T3/40 , G06T3/4038 , G06T7/40 , G06T7/80 , H04N25/702
CPC分类号： H04N23/80 , G06T3/40 , G06T3/4038 , G06T7/80 , H04N25/702 , G06T2200/32
摘要： Provided is a method for processing images. The method includes: acquiring a plurality of original sub-images acquired by a plurality of cameras in a camera array; converting first pixel coordinates of each pixel in each original sub-image in an image coordinate system into target pixel coordinates in a target plane coordinate system; determining a region pixel value of each sub-region according to a correspondence between the target pixel coordinates of each pixel in each original sub-image and each sub-region in the target plane; and determining a spliced image in the target plane based on the region pixel value of each sub-region.
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公开(公告)号：US11884214B2
公开(公告)日：2024-01-30
申请号：US17642010
申请日：2021-03-10
发明人： Gang Li , Yachong Xue , Hao Zhang , Lili Chen , Minglei Chu , Hong Zhu , Hong Li , Xinqi Lin , Shuai Liu , Hui Zhao
CPC分类号： B60R1/22 , G06F3/013 , G06T7/73 , G06T7/80 , H04N7/18 , B60R2300/105 , B60R2300/202 , B60R2300/802 , G06T2207/30201 , G06T2207/30268
摘要： Provided is a display method for A-pillar-mounted display assemblies of a vehicle. The method includes: acquiring facial posture information of a driver of the vehicle in a camera coordinate system by any one driver monitoring assembly of at least one driver monitoring assembly, determining a visual field of the driver based on a gaze direction of the driver and the eye position of the driver, acquiring coordinates of the two display assemblies in a world coordinate system, converting the coordinates of the two display assemblies in the world coordinate system into coordinates in the camera coordinate system based on a first conversion relationship, determining whether any one display assembly of the two display assemblies is within the visual field, and capturing an external image of the vehicle captured by the imaging assembly.
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公开(公告)号：US11288838B2
公开(公告)日：2022-03-29
申请号：US16531105
申请日：2019-08-04
发明人： Fuqiang Ma , Jiankang Sun , Gang Li , Hongzhen Xue , Zehua Dong
摘要： An image processing method and an image processing includes, when a current frame contains a target picture, taking the current frame as a reference frame for tracking and taking a set of matching points in the current frame, which match the target picture as an initial set of tracking points, to perform tracking of the target picture; obtaining a next frame and determining a set of tracking points of the next frame based on the initial set of tracking points; determining whether the number of tracking points in the set of tracking points is less than a first preset threshold; and, when the number of tracking points in the set of tracking points is less than the first preset threshold, determining supplementary tracking points and adding the supplementary tracking points to the set of tracking points.
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