New Method of Acquiring Homomorphic Filtering Mask in Spatial Domain
Helin Zhang
Abstract
Helin Zhang
Abstract
Homomorphic Filtering is a frequency domain operation to compress image light area and enhance contrast.It can remove the effect of asymmetry and does not lose the image detail at the same time.The essay introduces thes principles of homomorphic filtering in briefly,and mentions a new method to get the mask of homomorphic filtering in the spatial domain,fulfill homomorphic filtering in the spatial domain base on Matlab.
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Homomorphic Filtering is a frequency domain operation to compress image light area and enhance contrast.It can remove the effect of asymmetry and does not lose the image detail at the same time.The essay introduces thes principles of homomorphic filtering in briefly,and mentions a new method to get the mask of homomorphic filtering in the spatial domain,fulfill homomorphic filtering in the spatial domain base on Matlab.
Key concepts: Homomorphic filtering, Homomorphic encryption, Computer science, Domain (mathematical analysis), Image (mathematics), MATLAB, Frequency domain, Base (topology)