טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentRony Zatzarinni
SubjectRelief Analysis and Extraction
DepartmentDepartment of Electrical Engineering
Supervisors Full Professor Tal Ayellet
Dr. Ariel Shamir
Full Thesis textFull thesis text - English Version


Abstract

Many man made objects contain reliefs and added details. These are added for two main reasons. The first is purely aesthetic -- the relief is added for decoration and for creating an interesting design. The second reason is branding.

Reliefs are especially common in archeology: lamps, vases, pillars, coins and seals.

In this work, we present an approach for extracting reliefs and details from relief surfaces, created either by scanning or by CAD software.

We consider a relief surface as a surface composed of two components: a base surface and a height function which is defined over this base. However, since the base surface is unknown, the decoupling of these components is a challenge.

We show how to estimate a robust height function over the base, without explicitly extracting the base surface. This height function is utilized to separate the relief from the base. Several applications benefiting from this extraction are demonstrated, including relief segmentation, detail exaggeration and dampening, copying of details from one object to another, and drawing prominent curves on meshes.