Image signal filtering method and apparatus used for extracting scale-invariant feature from image, and image feature extracting method, apparatus and recording medium using thereof

摘要

The invention and the image signal filtering method and apparatus used in the constant size of the image feature extraction, using the same image feature extraction method, apparatus, and relates to a recording medium, the image signal filtering method to filter the image signal process according to the invention is used to extract the image feature from the filtered image signal (filtered image signal) by using a size invariant feature extraction algorithm as, SCS (Sparse Code Shrinkage) reduction function (shrinkage function) stabilized reduction function generation step of generating the stabilized reduction function to determine a parameter value of the reduction function from the input image signal to be used in the; Neuroscience image by using the re-expression model generates a sparse matrix and transform coding image signal converting step of generating a conversion value of the input image signal by the sparse coding transformation matrix; Stabilization sparse code generation step of substituting the value of the conversion function to produce a reduction in the stabilization stabilization sparse code of the input image signal; And the sparse and to reverse the stabilized sparse code by the adjoint transformation matrix comprises a filtering of the coded image generation step of generating the filtered image signal, an image, even if there is noise in the input image, and using the RANSAC characterized to reduce the error and to reliably extract.