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公开(公告)号：US09767567B2
公开(公告)日：2017-09-19
申请号：US14930009
申请日：2015-11-02
CPC分类号： G06T7/11 , G06K9/0014 , G06K9/3233 , G06T7/194 , G06T2207/10004 , G06T2207/10028
摘要： A method and an apparatus for separating a foreground image are disclosed. The method includes obtaining an input image, and color information and depth information of the input image; roughly dividing, based on the depth information of the input image, the input image to obtain an initial three-color image; reducing or expanding, based on the color information of the input image, an unknown region in the initial three-color image to obtain an optimized three-color image; and separating the foreground image from the optimized three-color image. According to the method, the initial three-color image can be optimized based on the color information of the input image, so that a more accurate three-color image can be obtained; thus the foreground image can be accurately separated from the three-color image.
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2.发明授权公开(公告)号：US09600898B2
公开(公告)日：2017-03-21
申请号：US14918680
申请日：2015-10-21
CPC分类号： G06T7/174 , G06T7/194 , G06T7/215 , G06T2207/10028
摘要： A method and an apparatus for separating a foreground image are disclosed. The method includes obtaining an input image and depth information of the input image; roughly dividing the input image to obtain a rough foreground region based on the depth information of the input image; obtaining motion information of the input image, and generating a three-color image from the rough foreground region based on the motion information; and separating the foreground image from the generated three-color image. According to the method, the three-color image is generated based on the depth information and the motion information, thus a foreground object can be accurately separated from the three-color image.
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公开(公告)号：US10074010B2
公开(公告)日：2018-09-11
申请号：US15211924
申请日：2016-07-15
CPC分类号： G06K9/00335 , G06K9/00375 , G06K9/48
摘要： An image processing method in accordance with this disclosure includes steps of obtaining an object image including an operating body, extracting the operating body from the object image, and calculating an orientation of the operating body in the object image. The method further includes determining whether the operating body is of an operator that operates an apparatus based on the orientation of the operation body.
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公开(公告)号：US09552514B2
公开(公告)日：2017-01-24
申请号：US14461558
申请日：2014-08-18
申请人： Ying Zhao , Liyan Liu , Lingyan Liang
发明人： Ying Zhao , Liyan Liu , Lingyan Liang
CPC分类号： G06K9/00355 , G01S17/50 , G06T7/20 , G06T7/215 , G06T7/248 , G06T2207/10028 , G06T2207/20021 , G06T2207/30196
摘要： A moving object detection method includes acquiring two depth image frames including depth information, which are obtained by continuously taking images of a moving object, the two depth image frames including a present depth image frame and at least one past depth image frame; dividing each of the two depth image frames into a plurality of blocks; calculating differences between numbers of pixels positioned in respective different depth areas in each of the plurality of blocks in the present depth image frame, and numbers of pixels positioned in respective different depth areas in each of the corresponding plurality of blocks in each of the at least one past depth image frame, which correspond to the plurality of blocks in the present depth image frame; and detecting a moving block in the present depth image frame based on the calculated difference and constituting the detected moving object.
摘要翻译： 移动物体检测方法包括获取包括深度信息的两个深度图像帧，所述深度信息通过连续拍摄移动物体的图像，所述两个深度图像帧包括当前深度图像帧和至少一个过去深度图像帧; 将两个深度图像帧中的每一个划分为多个块; 计算位于本深度图像帧中的多个块中的每一个中的相应不同深度区域中的像素的数量之间的差异，以及位于每个至少在每个的相应多个块中的相应不同深度区域中的像素的数量 一个过去的深度图像帧，其对应于当前深度图像帧中的多个块; 并且基于所计算的差异检测当前深度图像帧中的移动块，并构成检测到的移动对象。
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公开(公告)号：US09483835B2
公开(公告)日：2016-11-01
申请号：US14697804
申请日：2015-04-28
申请人： Lingyan Liang , Ying Zhao , Liyan Liu
发明人： Lingyan Liang , Ying Zhao , Liyan Liu
CPC分类号： G06T7/0097 , G06F3/017 , G06T5/002 , G06T5/50 , G06T7/11 , G06T7/174 , G06T7/187 , G06T7/194 , G06T2200/04 , G06T2207/10024 , G06T2207/10028 , G06T2207/30196 , H04N13/128
摘要： Disclosed is a method comprising steps of conducting image preprocessing so as to respectively obtain a candidate object region including a foreground image in a depth map and a color image; determining whether it is necessary to conduct a region growing process with respect to the candidate object region of the depth map; in the former case, conducting the region growing process with respect to the candidate object region of the depth map; and conducting, after the region growing process is conducted with respect to the candidate object region of the depth map, a depth value restoration process with respect to a candidate region.
摘要翻译： 公开了一种方法，包括进行图像预处理以分别获得包括深度图和彩色图像中的前景图像的候选对象区域的步骤; 确定是否需要针对深度图的候选对象区域进行区域增长处理; 在前一种情况下，对深度图的候选对象区域进行区域增长处理; 并且在相对于深度图的候选对象区域进行区域生长处理之后进行相对于候选区域的深度值恢复处理。
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公开(公告)号：US11601426B2
公开(公告)日：2023-03-07
申请号：US16850088
申请日：2020-04-16
申请人： Xiaojing Fan , Wei Wang , Haihua Yu , Ke Liao , Liyan Liu
发明人： Xiaojing Fan , Wei Wang , Haihua Yu , Ke Liao , Liyan Liu
摘要： A device authentication method, a service access control method, a device, and a non-transitory computer-readable recording medium are provided. In the device authentication method, an authentication request device issues an authentication request transaction in a distributed ledger, and an authentication response device reads the authentication request transaction in the distributed ledger and performs authentication. Thus, no third-party authentication center or coordinate device is required to participate in an authentication handshake process, thereby reducing deployment overhead of an authentication system and improving efficiency of authentication and access service control.
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公开(公告)号：US10482644B2
公开(公告)日：2019-11-19
申请号：US15868131
申请日：2018-01-11
申请人： Chaofeng Li , Hong Yi , Liyan Liu , Haihua Yu , Hongyi Liu
发明人： Chaofeng Li , Hong Yi , Liyan Liu , Haihua Yu , Hongyi Liu
摘要： A method, an apparatus and an electronic device for processing a panoramic image are provided. The method includes converting a first planar projection image of the panoramic image into a spherical image; determining a position of a region of interest in the spherical image; and cutting and expanding the spherical image based on the position of the region of interest in the spherical image, and obtaining a second planar projection image of the panoramic image. A distance between the region of interest in the second planar projection image and a center point of the second planar projection image is shorter than a distance between the region of interest in the first planar projection image and a center point of the first planar projection image.
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公开(公告)号：US20220027656A1
公开(公告)日：2022-01-27
申请号：US17381414
申请日：2021-07-21
申请人： Haijing Jia , Hong Yi , Liyan Liu , Wei Wang
发明人： Haijing Jia , Hong Yi , Liyan Liu , Wei Wang
摘要： Disclosed are an image matching method and apparatus. The image matching method is inclusive of steps of obtaining a panoramic image of at least one subspace in a 3D space and a 2D image of the 3D space; acquiring a 2D image of the at least one subspace in the 3D space; performing 3D reconstruction on the panoramic image of the at least one subspace, and procuring a projection image corresponding to the panoramic image of the at least one subspace; and attaining a matching relationship between the panoramic image of the at least one subspace and the 2D image of the at least one subspace, and establishing an association relationship between the panoramic image of the at least one subspace and the 2D image of the at least one subspace between which the matching relationship has been generated.
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公开(公告)号：US20180253879A1
公开(公告)日：2018-09-06
申请号：US15868131
申请日：2018-01-11
申请人： Chaofeng LI , Hong Yi , Liyan Liu , Haihua Yu , Hongyi Liu
发明人： Chaofeng LI , Hong Yi , Liyan Liu , Haihua Yu , Hongyi Liu
CPC分类号： G06T11/60 , G06T3/0062 , G06T7/11 , G06T7/70 , H04N5/23238
摘要： A method, an apparatus and an electronic device for processing a panoramic image are provided. The method includes converting a first planar projection image of the panoramic image into a spherical image; determining a position of a region of interest in the spherical image; and cutting and expanding the spherical image based on the position of the region of interest in the spherical image, and obtaining a second planar projection image of the panoramic image. A distance between the region of interest in the second planar projection image and a center point of the second planar projection image is shorter than a distance between the region of interest in the first planar projection image and a center point of the first planar projection image.
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公开(公告)号：US08983136B2
公开(公告)日：2015-03-17
申请号：US13608401
申请日：2012-09-10
申请人： Liyan Liu , Xiaomeng Wang , Pingping Pan
发明人： Liyan Liu , Xiaomeng Wang , Pingping Pan
IPC分类号： G06K9/00
CPC分类号： G06K9/00818
摘要： Disclosed are a method and a device for detecting traffic signs in an input image camera. The method comprises a color space converting step of converting the input image into a HSV color space image; a filtering step of filtering, based on a predetermined pass range of a standard color of each of the traffic signs, the HSV color space image to obtain a filtered image, and then generating one or more connected domains based on one or more regions in the filtered image; a removing step of removing, based on a standard rule of the corresponding traffic sign, at least one of the generated connected domains, not being the corresponding traffic sign, and letting others of the generated connected domains be candidate traffic sign domains; and a recognition step of recognizing, based on a feature of each of the candidate traffic sign domains, the corresponding traffic sign.
摘要翻译： 公开了一种用于检测输入图像相机中的交通标志的方法和装置。 该方法包括将输入图像转换为HSV色彩空间图像的色彩空间转换步骤; 滤波步骤，基于每个交通标志的标准颜色的预定通过范围，对所述HSV颜色空间图像进行滤波，以获得滤波图像，然后基于所述HSV颜色空间图像中的一个或多个区域生成一个或多个连接域 过滤图像; 基于对应的交通标志的标准规则去除所生成的连接域中的至少一个，不是相应的交通标志，并且使所生成的连接域中的其他人成为候选交通标志域; 以及识别步骤，基于每个候选交通标志域的特征识别相应的交通标志。
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