Essay On Camera Detection

A number of systems are already present which use different types of technologies to detect spy cameras at different places. Few such technologies are as follows:

2.1 Hidden Camera Detector

Hidden Camera Detector analyses the magnetic activity in the surrounding area and in case a resemblance to a camera is detected, an alarm is raised for further investigation for getting hold of the spy camera. It finds its application in trial rooms, hotel rooms and places where cameras maybe hidden. This app can also detect infrared lights. Also helps sharing of the location with friends easily. Radiation meter feature need to have magnetic sensor in your phone, otherwise this feature will not work.
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2.2 Glint finder-camera detector

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So it sends back the beam to the source .Reroreflection is a property in cameras where it reflects back a beam of light incident on it. The entire device is setup on the basis of this principle. [2]

3.2 Camera Detection 3.2.1 Scanning

The entire area to be protected is scanned by using a beam of normal light.LED (green) is used for producing them. The scanning beams sweep through the vertical and horizontal direction of the area, to ensure no camera escapes from the device. [3]

3.2.2 Test image capture

The area being scanned by the light beams is simultaneously recorded. The preprocessing image being acquired is called as the test image. The test image is obtained by use of high resolution camcorders. The camcorder should have a wide angle of capture so that it covers the entire area. The retro reflected beams also have the same properties of the original emitted beam. [3]

3.3 Image processing

3.3.1 Colour segmentation:

The image is taken in BGR format, we split the image into its Blue, green and red planes and extract the green plane from the