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A VISION-BASED SYSTEM FOR DYNAMIC WEATHER DETECTION

机译:基于视觉的动态天气检测系统

摘要

A method of detecting a dynamic weather event includes the steps of: (a) receiving video images of a scene from a camera; (b) dividing each of the video images into multiple regions, in which a region is defined by a range of distances from the camera to objects in the scene; (c) selecting a region; and (d) segmenting the selected region into a plurality of three-dimensional (3D) image patches, in which each 3D image patch includes a time-sequence of T patches, with each patch comprised of N x M pixels, wherein N, M and T are integer numbers. The method also includes the following steps: measuring an image intensity level in each of the 3D image patches; masking 3D image patches containing image intensity levels that are above a first threshold level, or below a second threshold level; and extracting features in each 3D image patch that is not discarded by the masking step. Based on the extracted features, the method makes a binary decision on detecting a dynamic weather event.
机译:一种检测动态天气事件的方法,包括以下步骤:(a)从摄像机接收场景的视频图像; (b)将每个视频图像划分为多个区域,其中一个区域由从摄像机到场景中物体的距离范围来定义; (c)选择一个地区; (d)将所选区域分割为多个三维(3D)图像块,其中每个3D图像块包括T个块的时间序列,每个块由N×M个像素组成,其中,N,M和T是整数。该方法还包括以下步骤:测量每个3D图像块中的图像强度级别;掩盖包含高于第一阈值水平或低于第二阈值水平的图像强度水平的3D图像补丁;在每个3D图像补丁中提取未被遮罩步骤丢弃的特征。基于提取的特征,该方法对检测动态天气事件做出二元决策。

著录项

  • 公开/公告号WO2016014930A2

    专利类型

  • 公开/公告日2016-01-28

    原文格式PDF

  • 申请/专利权人 EXELIS INC.;

    申请/专利号WO2015US41960

  • 发明设计人 REYNOLDS WILLIAM D. JR.;

    申请日2015-07-24

  • 分类号G06K9;

  • 国家 WO

  • 入库时间 2022-08-21 14:19:15

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