首页> 外国专利> SIGNAL PROCESSING FOR AUTONOMOUS ACQUISITION OF OBJECTS IN CLUTTERED BACKGROUND

SIGNAL PROCESSING FOR AUTONOMOUS ACQUISITION OF OBJECTS IN CLUTTERED BACKGROUND

机译:杂波背景下对象的自动采集的信号处理

摘要

A method and apparatus are disclosed for detecting moving objects silhouetted against background clutter. A correlation subsystem 12 is used to register the background of a current image frame (framestore 1) with an image frame taken two time periods earlier (framestore 3). A first difference image is generated by subtracting the registered images, with the first difference image being filtered by low pass filter 34 and thresholded by a three level segmenter 36. A second difference image is likewise generated between the current image frame and another image frame taken at a different subsequent time period. This second difference image is likewise filtered and thresholded. The two difference images are logically ANDed together by gate 39 whose output is connected to a formatter, sorter and feature extractor 40. Track files are generated in CPU 16 for comparing subsequently extracted image features with previously stored extracted features.
机译:公开了一种用于检测相对于背景杂波现出轮廓的运动物体的方法和设备。相关子系统12用于将当前图像帧(帧存储1)的背景与较早两个时间段(帧存储3)拍摄的图像帧配准。通过减去配准图像来生成第一差分图像,其中第一差分图像由低通滤波器34滤波并且由三级分割器36进行阈值处理。第二差分图像同样在当前图像帧和拍摄的另一图像帧之间生成。在不同的后续时间段。该第二差异图像同样被滤波和阈值化。这两个差异图像通过门39进行逻辑“与”运算,其输出连接到格式化程序,分类器和特征提取器40。跟踪文件在CPU 16中生成,用于将随后提取的图像特征与先前存储的提取特征进行比较。

著录项

  • 公开/公告号IL90898A

    专利类型

  • 公开/公告日1993-04-04

    原文格式PDF

  • 申请/专利权人 HUGHES AIRCRAFT COMPANY;

    申请/专利号IL19890090898

  • 发明设计人

    申请日1989-07-07

  • 分类号G06F15/66;G01S13/52;

  • 国家 IL

  • 入库时间 2022-08-22 05:11:22

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