8.3.4.5 h-Maxima and h-Minima Operations 137
8.3.4.6 Regional Maxima and Minima 137
8.3.4.7 Regional Extrema as Markers 138
8.4 Watershed Segmentation 138
8.4.1 Classical Watershed Transform 139
8.4.2 Filtering the Minima 140
8.4.3 Texture Detection 143
8.4.4 Watershed from Markers 145
8.4.5 Segmentation of Overlapped Convex Cells 146
8.4.6 Inner and Outer Markers 148
8.4.7 Hierarchical Watershed 151
8.4.8 Watershed Transform Algorithms 152
8.5 Summary of Important Points 154
9 Image Segmentation 159
Qiang Wu and Kenneth R. Castleman
9.1 Introduction 159
9.1.1 Pixel Connectivity 160
9.2 Region-Based Segmentation 160
9.2.1 Thresholding 160
9.2.1.1 Global Thresholding 161
9.2.1.2 Adaptive Thresholding 162
9.2.1.3 Threshold Selection 163
9.2.1.4 Thresholding Circular ...