Image Processing and Acquisition using Python

Chapter 7

Segmentation

7.1 Introduction

Segmentation is the process of separating an image into multiple logical segments. The segments can be defined as pixels sharing similar characteristics such as intensity, texture etc. There are many methods of segmentation. They can be classified as:

• Histogram based segmentation
• Region based segmentation
• Edge segmentation
• Differential equation based method
• Model based segmentation

In this chapter, we discuss histogram and region based segmentation methods. Edge based segmentation was discussed in Chapter 4, Spatial Filters. The other two methods are beyond the scope of this book. Interested readers can refer to [28],[83] and [100] for more details.

7.2 Histogram Based Segmentation

In the histogram based ...