Method for expressing color image, method for searching for color image, apparatus for expressing and searching for color image, computer system, computer program, and computer readable medium

摘要

A method of representing a colour image comprises selecting a region of the image, selecting one or more colours as representative colours for the region and, for a region having two or more representative colours, calculating for each representative colour at least two parameters related to the colour distribution in relation to the respective representative colour and using said parameters to derive descriptors for the image region.