Patent Document ID: 8073205
Application ID: 12210501
Patent Status: 1

Claim One:
1. Device for creating retinal fundus maps in such a manner that two or more fundus images are obtained for the same eye to be examined by changing a relative position of objective lens of a fundus camera with respect to said eye to be examined and thus obtained fundus images are arranged, being superimposed on each other, comprising: a memory for storing two or more sheets of fundus images for the same eye to be examined which are obtained by said fundus camera; blood vessel extraction image obtaining means for computing and obtaining blood vessel extraction images by extracting blood vessel portions from said obtained two or more fundus images; corner data image obtaining means for computing and obtaining a corner data image having corner portions of said blood vessel portions detected from said obtained blood vessel extraction image; probability distribution diagram obtaining means for computing and obtaining a probability distribution diagram for said corner data image by convolving said corner data image with a window function; matching score computing means for computing a matching probability score when executing a matching processing between said two or more fundus images on the basis of said probability distribution diagram corresponding to said each fundus image obtained and said corner data image, and for storing its result in a memory; and image compounding means for creating retinal fundus maps by superimposing said two or more fundus images on the basis of said obtained matching probability score.