The invention discloses an
image retrieval method based on a weight color-sift characteristic dictionary. The
image retrieval method based on the weight color-sift characteristic dictionary comprises the following steps that training images are selected in images to be retrieved randomly, the edges of the training images are extracted, the color-sift characteristics of edge points of all the training images are extracted, and a characteristic dictionary is constructed according to the color-sift characteristics, an image which needs to be retrieved is input and the color-sift characteristics of the retrieval image and the edge points of the image to be retrieved are extracted, and weight
histogram characteristics of the retrieval image and the image to be retrieved are extracted based on the characteristic dictionary;
similarity matching based on the weight
histogram characteristics is conducted on the retrieval image and the images to be retrieved in the
database based on the weight
histogram characteristics; whether all the images to be retrieved in the
database are all traversed is detected,, the result is matched according to similarity and the image searching result is displayed if all the images to be retrieved in the
database are all traversed, and the
similarity matching is conducted again if all the images to be retrieved in the database are not traversed. The
image retrieval method based on the weight color-sift characteristic dictionary improves accuracy and
callback rate during searching of a large-scaled
image database, has dimension invariance,
translation invariance and rotation invariance, and has the advantages that the image retrieval method based on the color-sift characteristic dictionary has locality, particularity, multi-amount property and high-efficiency property.