| Title: |
2D Motion Estimation in the Extraction of 3D Motion and Structure of Rigid Objects |
| Authors: |
Gabriel Tsechpenakis; Yiannis Xirouhakis; Anastasios Delopoulos |
| Contributors: |
The Pennsylvania State University CiteSeerX Archives |
| Source: |
http://cbim.rutgers.edu/dmdocuments/Santorini_1999.pdf. |
| Collection: |
CiteSeerX |
| Description: |
Two-dimensional motion estimation is a task that emerges in several elds of research such ascoding and compression, content-based video retrieval and computer vision. The problem has been tackled by several authors and various algorithms can be found in the literature focusing either on accuracy or low computational cost. Present work investigates the e cient application of existing motion estimation algorithms in 3D reconstruction of rigid objects from 2D projections. The latter has been given considerable attention lately due to the increasing interest in relevant applications, including model-based coding, robot vision and 3D modeling among others. Three well-known motion estimation techniques are employed, namely block matching, generalized block matching and optical ow methods, and the resulting motion elds are given as input to one of the existing 3D reconstruction algorithms. At the same time, local con dence criteria are de ned for the 2D motion vectors in order to improve 3D motion and structure estimates. For each of the employed 2D motion estimation methods, the advantages and disadvantages in 3D reconstruction are discussed w.r.t. the available object and the kind of its motion. 1 |
| Document Type: |
text |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.418.4309; http://cbim.rutgers.edu/dmdocuments/Santorini_1999.pdf |
| Availability: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.418.4309; http://cbim.rutgers.edu/dmdocuments/Santorini_1999.pdf |
| Rights: |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| Accession Number: |
edsbas.95D2FE6F |
| Database: |
BASE |