Chapter 10
Boundary Pattern Analysis
Recognition of binary objects by boundary pattern analysis should be a straightforward process, but this chapter shows that there are a number of problems to be overcome. In particular, any boundary distortions such as those due to breakage or several objects being in contact may result in total failure of the matching process. This chapter discusses the problems and their solution.
Look out for:
• the centroidal profile approach and its limitations.
• how the method may be speeded up.
• how recognition based on the (s, ψ) boundary plot is significantly more robust.
• how the (s, ψ) plot leads on to the more convenient (s, κ) plot.
• the relation between κ and ψ.
• more rigorous ways of dealing with the occlusion ...
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