ABSTRACT
In this chapter, the problem of identifying the projective shape of a planar
curve is considered as a practical application of the neighborhood hypothe-
sis test presented in Chapter 11, a data-driven example where we determine
δ , the smallest radius of the neighborhood hypothesis for which the neighborhood hypothesis is not rejected. The theory is applied to the recognition of the
projective shape of a planar curve extracted from digital images of a flat scene.
21.2 Hilbert Space Representations of Projective Shapes of Planar