TN2022000316A1 - Intelligent and embedded system for video surveillance of high-risk sites based on visible and thermal bispectral detection. - Google Patents

Abstract

The present invention proposes an embedded and intelligent system for monitoring high-risk sites that detects cases of intrusions into the monitored sites. This system is based on a technique for analyzing videos captured by thermal and visible bispectral cameras. The proposed system makes it possible, on the one hand, to improve the visual quality of thermal images and, on the other hand, to detect people in thermal and visible video streams. In addition, it offers intelligent and permanent monitoring in real time with adequate decision-making in the event of suspicious or abnormal situations. The proposed system comprises two modules: The first module relating to the improvement of image quality consists of proposing a deep neural network architecture to improve the quality of thermal images. This architecture consists of two main steps, the first is intended to improve the contrast of the image and the second step aims to remove noise. In the second module, a technique for transferring characteristics from the visible imaging domain to the thermal domain is proposed. This choice is justified by the lack of databases and pre-trained detectors in the thermal spectrum. In this module, an adaptive type people detector is proposed. It is based on the alignment of features on several levels to cover the gap between the two domains.