Fuzzy sets and Fuzzy techniquesProject

Fuzzy color image segmentation

Amin Allalou

Amalka Pinidiyaarachchi

Method

• A region growing processing to segment color images

• A region – Fuzzy subset of connected pixels – Constructed using color information

• To guide the region growing process – Distance defined in color space is used

• The color distance is used both– To select the pixels which will be linked in each step

– To calculate membership degree at each point to each region

Distance between pixels

A fuzzy Colour Image Segmentation Applied to Robot Vision – J. Chamorro-Martinez, D. Sánchez and B. Prados-Suárez

• Cost for a given path

• Minimum cost

• Optimum path

Membership function for fuzzy regions

• Membership degree of a pixel to a fuzzy region

Results

Original in RGB Membership (Object) Membership (Background)

• Test image

Grayscale image

Results

Original in RGB Membership (Object) Membership (Background)

• Cell nuclei

Grayscale image Membership (Object) HSI Membership (Background) HSI

Results

Original in RGB Membership (Nuclei) Membership (Red signal)

• Test image

Membership (Background)Membership (Green signal)