Patent Document ID: 9424466
Application ID: 14337001
Patent Status: 1

Claim One:
1. A shoe image retrieval apparatus using a matching pair comprising: a matching region search unit configured to extract features from a query image and to search a matching region based on the extracted features; a matching information detection unit configured to detect a matching pair between the searched matching region and an image stored in a database and to detect geometric image transformation using the detected matching pair; and a similar image retrieval unit configured to retrieve image information corresponding to the query image from the database based on the detected geometric image transformation, wherein the matching region search unit comprises: an image feature detection unit configured to detect features invariant of a geometric property from the query image using Scale-Invariant Feature Transform-Laplacian of Gaussian (SIFT-LoG); a matching region classification unit configured to decompose the detected features by components in a threshold range predetermined according to the geometric property taken from points adjacent to the detected features, using an image descriptor, to group the decomposed features into a group having a similar component according to a predetermined condition to form one matching region, and to classify the query image for the formed matching region; and a matching region identification unit configured to identify the classified query image as a self matching region or a single matching region.