Method for detecting artificial malicious damage to camera

A camera, malicious technology, applied in image enhancement, image analysis, image data processing and other directions, can solve problems such as camera damage, camera strong light irradiation, etc., to prevent time deterioration, low cost, and labor-saving effects

Active Publication Date: 2016-07-13
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for detecting that the camera has be...

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  • Method for detecting artificial malicious damage to camera
  • Method for detecting artificial malicious damage to camera
  • Method for detecting artificial malicious damage to camera

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Embodiment Construction

[0044] The technical solutions of the present invention will be described in detail below in conjunction with specific embodiments.

[0045] The situations in which the camera is considered to have been damaged generally include the following three types:

[0046] (1) Man-made malicious movement

[0047] Normally, the camera is fixed, and its background image changes slowly, unless extreme weather conditions cause the camera to shake. Therefore, when the camera scene changes, it is very likely that criminals rotate or destroy the camera in order to avoid the monitoring of the camera.

[0048] (2) Man-made malicious occlusion

[0049] Similar to the scene change, in order to avoid the monitoring of the camera, criminals may also adopt the method of blocking.

[0050] (3) Artificial strong light exposure

[0051] Strong light irradiation is also one of the ways for criminals to destroy the camera and avoid the camera. It is difficult for a human to distinguish the blurred i...

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Abstract

The invention discloses a method for detecting the artificial malicious damage to a camera. The method comprises the following steps that 1) a frame of current image is acquired; 2) the color image is converted into a gray scale image; 3) filtering processing is performed on the image; 4) the global gray scale mean of the image is calculated and compared with a preset threshold; 5) the foreground and the background of the image are estimated; 6) the size of foreground regional area of the image is compared with the preset threshold; 7) the background is compared with the background of the normal conditions; and 8) after abnormal behaviors appear, prompting information is marked, alarming is performed and the current abnormal image is saved. According to the method, the abnormal situation of the artificial malicious damage to the camera can be timely detected and alarmed, and the frame of the abnormal situation can be saved with no requirement for artificial protection for the camera. The method is low in cost and easy to operate so that manpower is greatly saved, the method is rapid and convenient, time deterioration can be effectively prevented, and thus the method has important meaning for safety and protection.

Description

technical field [0001] The invention belongs to the technical field of monitoring and designs a method for detecting that a camera is maliciously damaged by human beings. Background technique [0002] With the rapid development of the country's economy and the improvement of people's living standards, the safety of people's lives and public property needs to be guaranteed, so security monitoring measures are more and more widely used, whether it is a community, a bank, a school or many other Public places are generally equipped with a security monitoring system. As the most basic part of the security monitoring system - the camera, once it is maliciously damaged by humans, it will not be able to play a security role, and security issues will not be guaranteed. Therefore, a A way to detect that a camera has been maliciously tampered with, so problems can be identified in time. [0003] There is a method and device for determining that the camera is blocked (201110039895.6) i...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/40
CPCG06T2207/10024
Inventor 陈姝姜涛吴振飞蔡毅杰邵宝东王学如梁瑞宇
Owner NANJING INST OF TECH
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