Patent ID: 9633264
Date: 2017-04-25
CPC Classifications: G06K

Claim:
1. An image retrieval apparatus comprising: a selection unit configured to sequentially select each of a plurality of cameras; a first acquisition unit configured to acquire, from an image group captured by a camera selected by the selection unit, an image that does not include a retrieval target object as a background image; a second acquisition unit configured to acquire an image including the retrieval target object as a query image; an extraction unit configured to extract feature amounts having different dimensions from each of the background image and the query image; a learning unit configured to learn, for each sub-group of feature amounts having same dimension in a group of the feature amounts that the extraction unit extracts from the background image and the query image, a discriminator used for identifying the retrieval target object from an image captured by the selected camera to obtain weights corresponding to the sub-group; and a retrieval unit configured to utilize the sub-group and the weights corresponding to the sub-group to retrieve the retrieval target object from the image group captured by the selected camera, wherein the retrieval unit is configured to utilize the sub-group and the weights corresponding to the sub-group in an order of a sub-set based on a dimension of or an evaluation result of the sub-set.