Patent ID: 8737749
Filing Date: 2014-05-27
Classification: G06K

Abstract:
1. An image processing apparatus for dividing an image into regions for respective colors, comprising: an acquisition unit configured to acquire, from an image, illumination information indicating a center of illumination and a lightness change direction; and a division unit configured to divide the image into regions for respective colors based on the illumination information acquired by said acquisition unit and color information of respective pixels included in the image, wherein said division unit further comprises: a threshold setting unit configured to set thresholds in clustering step by step in accordance with the lightness change direction from the center of the illumination information acquired by said acquisition unit; a clustering unit configured to cluster the image into regions for respective colors in accordance with the thresholds set by said threshold setting unit; and a region integration unit configured to integrate the regions for respective colors clustered by said clustering unit in accordance with the number of regions which is set in advance.