Design And Implementation Of High Performance Image Correlator Based On SOPC

Image matching is a classical problem in image processing. It has a wide rang of applications in many fields such as computer vision, pattern recognition, medical image processing. Therefore, it's very important to research a high performance hardware circuit.The method based on zero-mean normalized cross-correlation matching algorithm is the most commonly and classical image matching method. So this paper designs and realizes a high-performance image correlator based SOPC(System On Programmable Chip). The image correlator is based on the architecture of SOPC system which can give full play advantages to work in the hardware and software together.This paper introduces and analyzes the image matching methods, which analyzes the matching method of the zero-mean normalized cross-correlation matching and its rapid implementation most. Then this paper presentes a hardware implementation overall framework for the the specific requirements of this algorithm based on the characteristics of software and hardware work together. So this paper designes an image correlator based on SOPC system architecture. Then focuses on the designing the key circuit realization method of the image correlator, gives the circuit module and uses ModelSim to simulate the module to validate the correctness of the function. Finally, in this paper, it realizes the image correlator in a specific hardware platform, and then does some optimizations to the key design of the circuit, tests the system and evaluates its performance.As the system is based on the structure of SOPC architecture and the design is full floating-point, the image correlator has the performances of high precision and configurable.