Hi, How to define the regions of image based on Kmeans clustering output [IDX,C] .I need this for finding Salient regions.

Working with the image from color filtered aperture lens. I am right now working with image segmentation for the same. Steps followed: 1: read image 2: Convert into CIELAB space 3: Use hillclimbing and K-means for clustering the data. 4: I am stuck. I have to find salient regions . 5: then partition . Papers referred :[1]Color Shift Model-Based Image Enhancement for Digital Multifocusing Based on a Multiple Color-Filter Aperture Camera Eunsung Lee, Wonseok Kang, Sangjin Kim, and Joonki Paik [2]Salient Region Detection and Segmentation Radhakrishna Achanta, Francisco Estrada, Patricia Wils, and Sabine S¨usstrunk