Similar image retrieval system and similar image retrieval method

摘要

A similar image retrieval system stores image data of picked-up images; extracts features of the respective picked-up images to store with the image data; specifies a key image; and retrieves an image having a high similarity with the key image by evaluating similarities between the key image and the picked-up images based on a feature of the key image and those of the picked up images. The system includes: a unit for assigning a keyword to each image; a first image retrieval unit for retrieving a similar image to the key image while excluding an image with the keyword from a retrieval target; and a second image retrieval unit for retrieving a similar image to the key image while taking only an image with the keyword as a retrieval target.