Secured Image Transmission Using Wavelets for Spread Spectrum Communication in a Remote Surveillance System

Abstract

The paper deals with security implementation in remote unattended sites which employ sensor systems using versatile communication methods. The principles of security management are outlined. Then, the paper discusses some improvements in the methods for transmission of collected data and images in such areas to the remote monitoring site through wireless communication. Herein, data transmission without errors is important so as to avoid mistakes in understanding insecurity levels. While spread spectrum communication is a choice, additional encoding of the data for secrecy is a requirement. A method based on wavelets is useful for this purpose. Encoded data could be transmitted through frequency hopped spread spectrum communication.

An economical wireless network monitored scheme for camera based intrusion detection at unattended sites

“…Thus the need for continuous video transmission is eliminated. As and when a subtle intrusion is inferred, the image data is sent, with the necessary formalities for protection and minimization of data size [6], through wireless to the remote surveillance monitoring computer. There, the attention may be attracted to the operator.…”