公开(公告)号：US09741130B2

公开(公告)日：2017-08-22

申请号：US14133895

申请日：2013-12-19

申请人： Shengyin Fan ,  Xin Wang

发明人： Shengyin Fan ,  Xin Wang

IPC分类号： G06K9/00 ,  G06T7/20 ,  G06T7/73 ,  G06T7/593 ,  G06T7/11 ,  G06T7/174 ,  G06T7/246 ,  G06T7/277 ,  G06T7/285 ,  G06T7/194

CPC分类号： G06T7/11 ,  G06T7/174 ,  G06T7/194 ,  G06T7/248 ,  G06T7/277 ,  G06T7/285 ,  G06T7/593 ,  G06T7/74 ,  G06T2207/10021 ,  G06T2207/10028 ,  G06T2207/30196 ,  G06T2207/30232 ,  G06T2207/30241

摘要： A method and an apparatus for detecting an object are disclosed. The method comprises the steps of obtaining a plurality of depth images of the object; extracting foregrounds; fusing the foregrounds in a unified three-dimensional world coordinate system; calculating an appearance two-dimensional histogram from the fused foreground by the following steps of dividing the foreground into vertical members and getting statistics of the numbers of foreground points in the vertical members so as to obtain the appearance two-dimensional histogram; determining an overlapping region and the number of overlaps based on the placement of stereo cameras; determining a detection parameter relating to a detection position based on the overlapping region and the number of overlaps; and detecting the object by the appearance two-dimensional histogram based on the determined detection parameter.

公开(公告)号：US09615080B2

公开(公告)日：2017-04-04

申请号：US14164739

申请日：2014-01-27

申请人： Xin Wang ,  Shengyin Fan

发明人： Xin Wang ,  Shengyin Fan

IPC分类号： H04N13/02 ,  G06T7/00 ,  G06T7/20 ,  H04N13/00

CPC分类号： H04N13/239 ,  G06T7/285 ,  G06T7/596 ,  G06T2207/10021 ,  H04N13/243 ,  H04N2013/0081 ,  H04N2013/0085

摘要： Disclosed are an object positioning method and an object positioning device based on object detection results of plural stereo cameras. The method comprises a step of obtaining, when each of the plural stereo cameras continuously carries out tracking and detection with respect to each of objects, positional information of the corresponding object; a step of generating, based on the positional information of the corresponding object, a trajectory of the corresponding object; and a step of carrying out a merging process with respect to the trajectories generated corresponding to the plural stereo cameras so as to determine at least one object position.

公开(公告)号：US20140177915A1

公开(公告)日：2014-06-26

申请号：US14133895

申请日：2013-12-19

申请人： Shengyin Fan ,  Xin Wang

发明人： Shengyin Fan ,  Xin Wang

IPC分类号： G06T7/20 ,  G06T7/00

CPC分类号： G06T7/11 ,  G06T7/174 ,  G06T7/194 ,  G06T7/248 ,  G06T7/277 ,  G06T7/285 ,  G06T7/593 ,  G06T7/74 ,  G06T2207/10021 ,  G06T2207/10028 ,  G06T2207/30196 ,  G06T2207/30232 ,  G06T2207/30241

摘要： A method and an apparatus for detecting an object are disclosed. The method comprises the steps of obtaining a plurality of depth images of the object; extracting foregrounds; fusing the foregrounds in a unified three-dimensional world coordinate system; calculating an appearance two-dimensional histogram from the fused foreground by the following steps of dividing the foreground into vertical members and getting statistics of the numbers of foreground points in the vertical members so as to obtain the appearance two-dimensional histogram; determining an overlapping region and the number of overlaps based on the placement of stereo cameras; determining a detection parameter relating to a detection position based on the overlapping region and the number of overlaps; and detecting the object by the appearance two-dimensional histogram based on the determined detection parameter.

摘要翻译： 公开了一种用于检测物体的方法和装置。 该方法包括以下步骤：获得对象的多个深度图像; 提取前景 将前景融合在统一的三维世界坐标系中; 通过以下步骤计算来自融合前景的外观二维直方图，将前景划分成垂直成员并得到垂直成员中的前景点数量的统计，以获得外观二维直方图; 基于立体相机的放置确定重叠区域和重叠数; 基于重叠区域和重叠次数来确定与检测位置有关的检测参数; 以及基于所确定的检测参数，通过出现的二维直方图来检测对象。

公开(公告)号：US08401232B2

公开(公告)日：2013-03-19

申请号：US13095128

申请日：2011-04-27

申请人： Shengyin Fan ,  Hong Yi ,  Yu Deng ,  Xin Wang

发明人： Shengyin Fan ,  Hong Yi ,  Yu Deng ,  Xin Wang

IPC分类号： G06K9/00

CPC分类号： G06K9/00771 ,  G06T7/215 ,  G06T7/277 ,  G06T2207/10016 ,  G06T2207/20076 ,  G06T2207/30196

摘要： Disclosed are an object detection method and an object detection device. The object detection method comprises a step of obtaining plural detection results of a current frame according to plural object detection methods; a step of setting initial probabilities of the plural detection results of the current frame; a step of calculating a movement frequency distribution diagram representing movement frequencies of respective pixels in the current frame; a step of obtaining detection results of a previous frame; a step of updating the probabilities of the plural detection results of the current frame; and a step of determining a final list of detected objects based on the updated probabilities of the plural detection results of the current frame.

摘要翻译： 公开了一种物体检测方法和物体检测装置。 物体检测方法包括根据多个物体检测方法获得当前帧的多个检测结果的步骤; 设定当前帧的多个检测结果的初始概率的步骤; 计算表示当前帧中的各个像素的移动频率的移动频率分布图的步骤; 获取前一帧的检测结果的步骤; 更新当前帧的多个检测结果的概率的步骤; 以及基于当前帧的多个检测结果的更新概率来确定检测对象的最终列表的步骤。

公开(公告)号：US10032082B2

公开(公告)日：2018-07-24

申请号：US15143718

申请日：2016-05-02

申请人： Bo Pang ,  Shengyin Fan ,  Xin Wang ,  Qian Wang ,  Gang Wang

发明人： Bo Pang ,  Shengyin Fan ,  Xin Wang ,  Qian Wang ,  Gang Wang

IPC分类号： G06K9/00

摘要： A method and an apparatus for detecting an abnormal situation are disclosed. The method includes recognizing whether a detection target exists in a captured image; generating, based on the captured image, a three-dimensional point cloud of the detection target in the captured image, when the detection target exists; obtaining, based on the generated three-dimensional point cloud, one or more current posture features of the detection target; and determining, based on the current posture features and one or more predetermined posture feature standards, whether the abnormal situation exists, the posture feature standards being previously determined based on one or more common features when the detection target performs a plurality of abnormal actions.

公开(公告)号：US20160335491A1

公开(公告)日：2016-11-17

申请号：US15151940

申请日：2016-05-11

申请人： Qian Wang ,  Shengyin Fan ,  Xin Wang ,  Gang Qiao ,  Jiadan Zhu

发明人： Qian Wang ,  Shengyin Fan ,  Xin Wang ,  Gang Qiao ,  Jiadan Zhu

IPC分类号： G06K9/00 ,  G06T7/20 ,  G06T7/00

CPC分类号： G06K9/00369 ,  G06K9/00778

摘要： Method, device, and non-transitory computer-readable medium detecting a gathering of objects based on stereo vision are disclosed, and the method comprises steps of obtaining current and prior images and a corresponding depth map; extracting foreground pixels corresponding to detection objects from the current and prior images, and projecting the foreground pixels onto a ground surface to acquire a foreground projection image including foreground projection blocks; conducting, based on image feature differences of the foreground pixels between the current and prior images, projection onto the ground surface to acquire moving foreground projection blocks; utilizing the moving foreground projection blocks to erode the foreground projection blocks to obtain still foreground projection blocks; and determining, based on the still foreground projection blocks, whether the gathering of objects exists.

摘要翻译： 公开了基于立体视觉检测物体聚集的方法，装置和非暂时计算机可读介质，并且该方法包括获取当前和先前图像以及对应的深度图的步骤; 从当前和先前图像中提取与检测对象相对应的前景像素，并将前景像素投影到地面上以获取包括前景投影块的前景投影图像; 基于当前和先前图像之间的前景像素的图像特征差异进行投影，以投影到地面上以获取移动的前景投影块; 利用移动的前景投影块来侵蚀前景投影块以获得静止的前景投影块; 以及基于所述静止前景投影块来确定是否存在对象的聚集。

公开(公告)号：US08896657B2

公开(公告)日：2014-11-25

申请号：US13324179

申请日：2011-12-13

申请人： Xiaomeng Wang ,  Shengyin Fan ,  Weitao Gong ,  Xin Wang

发明人： Xiaomeng Wang ,  Shengyin Fan ,  Weitao Gong ,  Xin Wang

IPC分类号： H04N7/14

CPC分类号： H04N7/15 ,  H04N7/142

摘要： Disclosed are a scene video switch system and a scene video switch method. The system comprises an input unit configured to input an image currently captured by a video capture unit to serve as a current image; a detection unit configured to detect all of interesting elements and latent elements in the current image so as to determine a maximum possible existing area of the interesting elements; a state switch unit configured to carry out, by using a predetermined finite state machine, switching between scene states of the maximum possible existing area according to predetermined different scene states and switching conditions; and a display unit configured to extract, based on a current scene state switched by the state switch unit, an area of concern coinciding with the current scene state from the maximum possible existing area to serve as a scene video for display.

摘要翻译： 公开了一种场景视频切换系统和场景视频切换方法。 该系统包括：输入单元，被配置为输入由视频捕捉单元当前捕获的图像以用作当前图像; 检测单元，被配置为检测当前图像中的所有感兴趣元素和潜在元素，以便确定感兴趣元素的最大可能存在区域; 状态切换单元，被配置为通过使用预定的有限状态机根据预定的不同场景状态和切换条件来切换最大可能存在区域的场景状态; 以及显示单元，被配置为基于由状态切换单元切换的当前场景状态，从最大可能的现有区域提取与当前场景状态一致的关注区域，以用作用于显示的场景视频。

公开(公告)号：US20110274315A1

公开(公告)日：2011-11-10

申请号：US13095128

申请日：2011-04-27

申请人： Shengyin FAN ,  Hong Yi ,  Yu Deng ,  Xin Wang

发明人： Shengyin FAN ,  Hong Yi ,  Yu Deng ,  Xin Wang

IPC分类号： G06K9/00

CPC分类号： G06K9/00771 ,  G06T7/215 ,  G06T7/277 ,  G06T2207/10016 ,  G06T2207/20076 ,  G06T2207/30196

摘要： Disclosed are an object detection method and an object detection device. The object detection method comprises a step of obtaining plural detection results of a current frame according to plural object detection methods; a step of setting initial probabilities of the plural detection results of the current frame; a step of calculating a movement frequency distribution diagram representing movement frequencies of respective pixels in the current frame; a step of obtaining detection results of a previous frame; a step of updating the probabilities of the plural detection results of the current frame; and a step of determining a final list of detected objects based on the updated probabilities of the plural detection results of the current frame.

摘要翻译： 公开了一种物体检测方法和物体检测装置。 物体检测方法包括根据多个物体检测方法获得当前帧的多个检测结果的步骤; 设定当前帧的多个检测结果的初始概率的步骤; 计算表示当前帧中的各个像素的移动频率的移动频率分布图的步骤; 获取前一帧的检测结果的步骤; 更新当前帧的多个检测结果的概率的步骤; 以及基于当前帧的多个检测结果的更新概率来确定检测对象的最终列表的步骤。

公开(公告)号：US10026012B2

公开(公告)日：2018-07-17

申请号：US15267329

申请日：2016-09-16

申请人： Jiadan Zhu ,  Xin Wang ,  Shengyin Fan ,  Qian Wang ,  Bo Pang

发明人： Jiadan Zhu ,  Xin Wang ,  Shengyin Fan ,  Qian Wang ,  Bo Pang

IPC分类号： G06K9/62 ,  G06K9/46 ,  G06T7/00 ,  G06T7/40

摘要： A method and an apparatus for separating objects are disclosed. The method includes obtaining a depth image including a plurality of objects; obtaining a two-dimensional image including the objects; performing pixel-clustering using depth values of pixels in the depth image and pixel values of pixels in the two-dimensional image to obtain a plurality of sub-regions; performing region-clustering for the sub-regions to obtain a clustering result as an object separation result; and outputting the object separation result.

公开(公告)号：US09984286B2

公开(公告)日：2018-05-29

申请号：US15148391

申请日：2016-05-06

申请人： Xin Wang ,  Shengyin Fan ,  Qian Wang ,  Jiadan Zhu

发明人： Xin Wang ,  Shengyin Fan ,  Qian Wang ,  Jiadan Zhu

IPC分类号： G06K9/00 ,  G06K9/62 ,  G06T7/00

CPC分类号： G06K9/00369 ,  G06K9/00778

摘要： A method and an apparatus for detecting persons are disclosed. The method includes initially detecting the persons in a height-top-view; dividing the height-top-view into one or more regions, and estimating crowd density in each region; determining, based on the crowd density, visible regions of the initially detected persons in each of the regions; for each of the initially detected persons, extracting a first gradient feature and a second gradient feature of the person from the height-top-view, and a grayscale image or a color image corresponding to the height-top-view, respectively; for each of the initially detected persons, determining, based on the extracted first gradient feature and second gradient feature, using a previously constructed classifier corresponding to the determined visible region of the person, a confidence level of the initially detected person; and correcting, based on the confidence level, a detection result of the initially detected persons.