IMAGE RETRIEVAL DEVICE, IMAGE RETRIEVAL METHOD, RETRIEVAL ORIGINAL IMAGE PROVIDING DEVICE, RETRIEVAL ORIGINAL IMAGE PROVIDING METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To obtain a local feature point and a local feature amount having high discrimination performance from other images and significant for retrieval, so as to realize retrieval with suppressed degradation of retrieval accuracy, in a case of image retrieval using the local feature amount, even with limitation in the number of usable feature points at retrieval.SOLUTION: An image feature list having low discrimination performance from other images is created based on the number of registered image features or the number of images. Referring to the image feature list, feature points extracted from a query image are selected.