METHOD AND APPARATUS FOR ILLUMINATION NORMALIZATION

摘要

A method and an apparatus for illumination normalization are provided to remove a shadow having discontinuity similar to object's properties effectively by using two discontinuous measuring methods and use a new transfer function when connecting the two discontinuous measuring methods, thereby removing a shadow without deteriorating object's properties. A weight calculating unit(130) calculates each weight with regard to each pixel by using a predetermined transfer function. An illumination estimating unit(140) performs a predetermined convolution operation as much as set repetition times by receiving each weight to measure illumination. An illumination normalization unit(150) normalizes illumination by removing the estimated illumination from an input image.