A contour or hierarchical set of contours within an image.
A contour Following strategy implements a Contour Tracing algorithm that extracts a boundary from an image
The Moore Neighborhood contour tracing strategy as described by this tutorial.
Given a binary image (1-connected and 0-connected regions) detect contours and provide both the contours and a hierarchy of contour membership.
The neighbourhood border/contour tracing algorithm described in Appendix 1 of the Suzuki contour detection algorithm
The contour type