An image retrieval method and apparatus independent of an illumination
change are provided. The image retrieval method involves: inputting a
query image; detecting an illumination color from the query image and
converting the illumination color into a standard illumination color;
extracting color information of the query image by using color
descriptors; and retrieving a similar image by comparing the extracted
color information with color information of a database which converts a
variety of images into images of standard illumination colors and
extracts and stores the color information of the images in advance.
According to the method, without changing the structures of color
descriptors or a similarity comparison using color information, an image
retrieval independent of illumination changes is enabled by adding only a
preceding step of standard illumination conversion.