公开(公告)号：US09418426B1

公开(公告)日：2016-08-16

申请号：US14606469

申请日：2015-01-27

Applicant: Xerox Corporation

Inventor： Edgar A. Bernal ,  Qun Li

IPC: G06K9/00 ,  G06K9/34 ,  G06T7/00 ,  G06T7/40 ,  H04N9/04

CPC classification number: G06T7/408 ,  G06T7/254 ,  G06T7/90 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20032 ,  G06T2207/20081 ,  G06T2207/30232

Abstract: A camera outputs video as a sequence of video frames having pixel values in a first (e.g., relatively low dimensional) color space, where the first color space has a first number of channels. An image-processing device maps the video frames to a second (e.g., relatively higher dimensional) color representation of video frames. The mapping causes the second color representation of video frames to have a greater number of channels relative to the first number of channels. The image-processing device extracts a second color representation of a background frame of the scene. The image-processing device can then detect foreground objects in a current frame of the second color representation of video frames by comparing the current frame with the second color representation of a background frame. The image-processing device then outputs an identification of the foreground objects in the current frame of the video.

Abstract translation: 相机将视频输出为具有第一（例如相对低维）色彩空间中的像素值的视频帧序列，其中第一颜色空间具有第一数量的通道。 图像处理设备将视频帧映射到视频帧的第二（例如较高维度）的颜色表示。 映射使得视频帧的第二颜色表示相对于第一数量的信道具有更多数量的信道。 图像处理装置提取场景的背景帧的第二颜色表示。 然后，图像处理装置可以通过将当前帧与背景帧的第二颜色表示进行比较来检测视频帧的第二颜色表示的当前帧中的前景对象。 然后，图像处理装置输出视频的当前帧中的前景对象的标识。

公开(公告)号：US09390329B2

公开(公告)日：2016-07-12

申请号：US14262456

申请日：2014-04-25

Applicant: Xerox Corporation

Inventor： Matthew Adam Shreve ,  Edgar A Bernal ,  Qun Li ,  Robert P. Loce

IPC: G06K9/00 ,  G06K9/46 ,  G06K9/52 ,  G06T7/20

CPC classification number: G06K9/00624 ,  G06K9/46 ,  G06K9/52 ,  G06K2009/4666 ,  G06T7/20 ,  G06T7/77 ,  G06T2207/10016 ,  G06T2207/30236

Abstract: This disclosure provides a method and system to locate/detect static occlusions associated with an image captured scene including a tracked object. According to an exemplary method, static occlusions are automatically located by monitoring the motion of single or multiple objects in a scene over time and with the use of an associated accumulator array.

Abstract translation: 本公开提供了一种定位/检测与包括跟踪对象的图像捕获场景相关联的静态遮挡的方法和系统。 根据示例性方法，通过随时间监视场景中的单个或多个对象的运动以及使用相关联的累加器阵列来自动定位静态遮挡。

公开(公告)号：US09390328B2

公开(公告)日：2016-07-12

申请号：US14262276

申请日：2014-04-25

Applicant: Xerox Corporation

Inventor： Matthew Adam Shreve ,  Qun Li ,  Edgar A. Bernal ,  Robert P. Loce

IPC: G06K9/00 ,  G06K9/52 ,  G06T7/00 ,  G06K9/46 ,  G06T7/20

CPC classification number: G06K9/00624 ,  G06K9/46 ,  G06K9/52 ,  G06K2009/4666 ,  G06T5/005 ,  G06T5/50 ,  G06T7/20 ,  G06T7/246 ,  G06T2207/10016 ,  G06T2207/30236 ,  G06T2207/30241

Abstract: This disclosure provides a static occlusion handling method and system for use with appearance-based video tracking algorithms where static occlusions are present. The method and system assumes that the objects to be tracked move in according to structured motion patterns within a scene, such as vehicles moving along a roadway. A primary concept is to replicate pixels associated with the tracked object from previous frames to current or future frames when the tracked object coincides with a static occlusion, where the predicted motion of the tracked object is a basis for replication of the pixels.

Abstract translation: 本公开提供了一种静态遮挡处理方法和系统，用于与存在静态遮挡的基于外观的视频跟踪算法。 方法和系统假设要跟踪的对象根据场景内的结构化运动模式移动，例如沿着道路行驶的车辆。 主要概念是当被跟踪的对象与静态遮挡一致时，将跟踪对象与先前帧相关联的像素复制到当前或将来的帧，其中跟踪对象的预测运动是像素复制的基础。

公开(公告)号：US20150312529A1

公开(公告)日：2015-10-29

申请号：US14261013

申请日：2014-04-24

Applicant: Xerox Corporation

Inventor： Edgar A. Bernal ,  Qun Li ,  Robert P. Loce

IPC: H04N7/18

CPC classification number: G06K9/00785 ,  G06K9/00771 ,  G06T7/246 ,  G06T2207/10016 ,  G06T2207/30236 ,  G06T2207/30241

Abstract: A method for automatically determining a dynamic queue configuration includes acquiring a series of frames from an image source surveying a queue area. The method includes detecting at least one subject in a frame. The method includes tracking locations of each detected subject across the series of frames. The method includes generating calibrated tracking data by mapping the tracking locations to a predefined coordinate system. The method includes localizing a queue configuration descriptor based on the tracking data.

Abstract translation: 用于自动确定动态队列配置的方法包括从测量队列区域的图像源获取一系列帧。 该方法包括检测帧中的至少一个被摄体。 该方法包括在该系列帧中跟踪每个检测到的对象的位置。 该方法包括通过将跟踪位置映射到预定义的坐标系来生成校准的跟踪数据。 该方法包括基于跟踪数据来定位队列配置描述符。

公开(公告)号：US20150310458A1

公开(公告)日：2015-10-29

申请号：US14279652

申请日：2014-05-16

Applicant: Xerox Corporation

Inventor： Edgar A. Bernal ,  Qun Li ,  Robert P. Loce

IPC: G06Q30/02 ,  G08B13/196 ,  G01S3/786

CPC classification number: G06Q30/0201 ,  G06K9/00778 ,  G06K9/00798 ,  G06Q50/12

Abstract: A system and method for detecting customer drive-off/walk-off from a customer queue. An embodiment includes acquiring images of a retail establishment, said images including at least a portion of a customer queue region, determining a queue configuration within the images, analyzing the images to detect entry of a customer into the customer queue, tracking a customer detected in the customer queue as the customer progresses within the queue, analyzing the images to detect if the customer leaves the customer queue, and generating a drive-off notification if a customer leaves the queue.

Abstract translation: 一种用于从客户队列中检测客户关机/脱离的系统和方法。 一个实施例包括获取零售店的图像，所述图像包括客户队列区域的至少一部分，确定图像内的队列配置，分析图像以检测客户进入客户队列中的进入，跟踪客户检测到的客户 客户队列随着客户队列中的进展，分析图像以检测客户是否离开客户队列，如果客户离开队列，则生成停车通知。

公开(公告)号：US20150278616A1

公开(公告)日：2015-10-01

申请号：US14227035

申请日：2014-03-27

Applicant: Xerox Corporation

Inventor： Qun Li ,  Edgar A. Bernal ,  Matthew Shreve ,  Robert P. Loce

IPC: G06K9/00 ,  G06T7/00 ,  G06K9/62

CPC classification number: G06K9/00825 ,  G06K9/00744 ,  G06K9/6269 ,  G06T7/194 ,  G06T7/215 ,  G06T7/251 ,  G06T7/254 ,  G06T2207/10048 ,  G06T2207/20032 ,  G06T2207/20076 ,  G06T2207/20081 ,  G06T2207/30232 ,  G06T2207/30242

Abstract: A method for removing false foreground image content in a foreground detection process performed on a video sequence includes, for each current frame, comparing a feature value of each current pixel against a feature value of a corresponding pixel in a background model. The each current pixel is classified as belonging to one of a candidate foreground image and a background based on the comparing. A first classification image representing the candidate foreground image is generated using the current pixels classified as belonging to the candidate foreground image. The each pixel in the first classification image is classified as belonging to one of a foreground image and a false foreground image using a previously trained classifier. A modified classification image is generated for representing the foreground image using the pixels classified as belonging to the foreground image while the pixels classified as belonging to the false foreground image are removed.

Abstract translation: 在对视频序列执行的前景检测处理中去除假前景图像内容的方法包括：对于每个当前帧，将每个当前像素的特征值与背景模型中相应像素的特征值进行比较。 基于比较，将每个当前像素分类为属于候选前景图像和背景中的一个。 使用分类为属于候选前景图像的当前像素来生成表示候选前景图像的第一分类图像。 使用先前训练的分类器将第一分类图像中的每个像素分类为属于前景图像和假前景图像之一。 生成用于使用分类为属于前景图像的像素来表示前景图像的修改后的分类图像，而分类为属于假前景图像的像素被去除。

公开(公告)号：US20140226852A1

公开(公告)日：2014-08-14

申请号：US13767658

申请日：2013-02-14

Applicant: XEROX CORPORATION

Inventor： Qun Li ,  Edgar A. Bernal ,  Wencheng Wu ,  Beilei Xu ,  Robert P. Loce ,  Raja Bala ,  Stuart A. Schweid

IPC: G06K9/32

CPC classification number: G06K9/00771

Abstract: A system and method of providing annotated trajectories by receiving image frames from a video camera and determining a location based on the image frames from the video camera. The system and method can further include the steps of determining that the location is associated with a preexisting annotation and displaying the preexisting annotation. Additionally or alternatively, the system and method can further include the steps of generating a new annotation automatically or based on a user input and associating the new annotation with the current location.

Abstract translation: 一种通过从摄像机接收图像帧并基于来自摄像机的图像帧来确定位置来提供注释轨迹的系统和方法。 该系统和方法还可以包括以下步骤：确定位置与预先注释相关联并显示预先存在的注释。 附加地或替代地，系统和方法还可以包括以下步骤：自动地或基于用户输入生成新的注释并将新注释与当前位置相关联。