Question

The term, Curvature is defined as:

(a) Rate of change of area

(b) Rate of change of slope

(c) Slope

(d) Rate of change of diameter

I had been asked this question in a job interview.

This interesting question is from Boundary Descriptors in division Representation and Description of Digital Image Processing

Answer 1

Correct choice is (b) Rate of change of slope

The explanation is: Curvature of a boundary is defined as the rate of change of slope. In general, as the boundaries tend to be locally ragged, it is difficult to obtain reliable measures of curvature at a point on a digital boundary.