Qualifier Seminar by Mr. Bashar Al-Sadik
Dept. of Earth Observation Science
Guided real-time close range photogrammetry for three dimensional modelling
Abstract
Photogrammetry and machine vision sharing a vital problem which is the reconstruction of reality based 3D models of objects from 2D images. It is called in literature Image-Base Modeling IBM. Photogrammetry is looking for accurate metric results while machine vision is trying to automate information extraction as far as possible.
This research will try to combine these both characteristics (accuracy and automation) in one approach for reality 3D modeling of static objects. The major application is in cultural heritage documentation because of the increasing demand for the digital preservation, restoration and virtual tourism.
The research introduces a multi-step guided real time imaging system for 3D modeling of cultural heritage objects with the aim to even enable laymen to produce a high-quality virtual model.
The concept is based on a first video imaging taken around the object and then processed to create an initial 3D model. Depending on this initial model, optimization will run to compute the optimal camera placement for a second imaging round where high resolution images will be taken.
The imaging system will guide the camera operator to accessible imaging locations through real time instructions to capture new images.
The image network resulting from this photo take will ensure both accurate and dense point cloud and finally results in an improved 3D model. A final step is followed concerning the detection and elimination of holes in the point cloud.
Different problems will be faced and have to be solved like the mathematical problem of camera network optimization, guiding an operator to the optimal locations, dense matching, and detecting the holes in the point cloud.
As a final summary the proposed research will introduce the concept of building an innovative imaging real time guiding system that is capable to carry out the construction of an accurate 3D realistic textured model for static objects with multi imaging rounds. The system shall take into consideration the two cases of calibrated and un-calibrated hand held cameras.
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| Event starts: | Friday 27 May 2011 at 14:30 |
| Venue: | ITC room 2-008 |
| City where event takes place: | Enschede |
| Country where event takes place: | Netherlands |