Pinhole camera detecting method based on binocular detection

Abstract

The invention discloses a pinhole camera detecting method based on binocular detection, which is characterized in that pinhole cameras hidden in a room can be effectively detect and its accurate position can be determined; based on the feature of the cat-eye effect of the pinhole cameras that the reflected light is returned along the original path and the scattering angle is quite small, and by means of an invisible laser beam, suspicious areas in a room with possible pinhole cameras can be scanned; two CCDs having certain transverse distance are adopted to simultaneously detect the reflectedlight of the suspicious area; the imaging time sequence of two CCDs maintain simultaneous, and after the sequence images of the two CCDS undergo difference and information processing, the difference images with high recognition degree can be obtained, and effective identification can be realized. The invention is advantageous in that as the two images obtained are both active detection images, thedifference between the reflected light at background can be little, and the difference between the reflected light of the pinhole cameras can be great, and thereby without too much subsequent information processing, the images aimed by the pinhole camera with high recognition degree can be obtained; the identifying accuracy can be greatly increased, and false-alarm rate can be reduced.

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection and identification, and in particular relates to a detection method of a pinhole camera based on binocular detection. Background technique [0002] With the rapid development of photoelectric technology, the security monitoring system has been widely used in public security evidence collection, reconnaissance surveillance, facility and road monitoring, etc., which has played a positive role in the stability of the country and society. But at the same time, the emergence and proliferation of pinhole cameras have greatly threatened personal privacy and property safety, and various unhealthy security phenomena such as sneak shots and blackmail have begun to breed in the society. This is because the size of the pinhole camera is very small, and its caliber is generally only on the order of millimeters, so its stealth effect is very good, and it can be installed in imperceptible walls, ...

AI Technical Summary

Problems solved by technology

This method also uses a single detector, which mainly relies on algorithms to improve the recognition ability, and the recognition accuracy is low, and the real-time performance is not high, and the cost is relatively high.

Images