Some Applications of the Integral Method of Connectivity Estimation

Yoji Arai¹ and Ryuji Takaki²

¹Kyoritsu Women's Junior College, Chiyoda, Tokyo 101, Japan
²Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183, Japan

(Received September 5, 1994; Accepted March 26, 1995)

Keywords: Keywords: Connectivity, Gray Pattern, Integral Method, Image Analysis

Abstract. Abstract. A new method developed by the present authors to estimate characters of gray patterns, such as the number of separate elements and their connectivity, was applied to some examples, i.e. an artificial isolated spot with random noise, a photograph of thermal convection and cross sections of pathological human liver. In order to eliminate noise and increase contrast, image data were smoothed by averaging or taking median and gray levels were modified by the use of a mapping function. This method proved to be considerably effective for automatic characterization of gray patterns if an enough care is paid to remove noises by iterative smoothing.