Equivalence analysis of Fourier ghost imaging and sinusoidal ghost imaging

Ghost imaging, also known as correlation is one of the research hotspots in imaging field. Various ghost systems with different basic principles and implementation architectures have emerged, but between them weak, showing a diversified trend recent progress slower than before. Studying essence theory feasible direction to explore unknown field imaging. Through research, we find that Fourier sinusoidal are based on same type orthogonal sine speckle cosine speckle, which very high similarity. At time, method can give complete spatial description process, so guess these two methods reveal relationship domain On this basis, it proved equivalent principle. The former be realized by n-step phase shift, while latter two-step shift. Considering both use fringes structural speckles. By combining decomposition characteristics traditional analyzed, some constructed basis explained. simulation results applied edge detection show combination simultaneously obtain better anti-noise performance higher efficiency Since relates image their expression transform association even whole generalized. This conclusion may provide way for associating kinds hoped more new types will developed.