A RFID image-detection system for invisible objects

This work presents a new idea of composing an image-detection system based on RFID technologies. This “negative-detection” method is suitable to be applied for detecting invisible objects or for position identification as a secret monitoring. There are special advantages by such a way of composing an image-detection system, namely, insensitive to environment and low-cost. The system detail structure and operation are explained well in text.