ABSTRACT
This chapter deals with one-dimensional shape feature extraction techniques or shape signatures. The concept of the complex coordinate is introduced in this chapter. This chapter also gives an overview of different one-dimensional shape features extraction techniques such as centroid distance function, tangent angle, contour curvature, area function, triangle area representation and chord length function. The benefits and limitations of each method are also included in this chapter. All the techniques are represented in such a way that it will be easy to understand for those who are new to the research field as most are described with equations and pictorial representations.
