High-accuracy image matching using phase-only correlation and its application

Image matching is the most important fundamental task in many fields, such as image sensing, video signal processing, computer vision, etc. Recently, the demand for high-performance image matching achieving sub-pixel registration is rapidly growing in many applications. We have developed an efficient image matching technique using Phase-Only Correlation (POC), which uses the phase components in Discrete Fourier Transforms (DFTs) of given images. In this paper, we briefly present fundamentals of our image matching technique and examples of the potential applications.