Hermilo Sánchez-Cruz
Autonomous University of Aguascalientes, México
Title: Representing 3D binary objects by means of relative chain codes
Biography
Biography: Hermilo Sánchez-Cruz
Abstract
Nowadays, research on 3D object representation for analysis, animation and recognition is a very active field. A three dimensional binary object consists of a set of connected voxels, either through their faces, edges or vertices. In order to perform shape analysis methods, as well as improving memory storage allocation, some chain codes have been proposed to represent the surface of such objects. For instance, in computer vision and pattern recognition has been proposed digital representation schemes for 3D discrete curves, by using the well-known absolute Freeman chain code, or the relative orthogonal chain codes, which are codes to represent face connected objects. Recently, a new relative chain code has been proposed to represent a 3D binary object, independently of connectivity. The different code schemes address some problems associated with invariance under affine transformations, like rotation and scale, and also, with the suitability in performing storage memory efficiently. We analyze and explore how to solve such problems. In the conference talk, we also explore the application of 3D chain codes regarding the geometric structure of the objects, depending of face, edge or vertex connectivity, or a combination of them, particularly with skeletonized and volumetric objects.