Authors:
Michal Krumnikl
;
Eduard Sojka
;
Jan Gaura
and
Oldřich Motyka
Affiliation:
VŠB - Technical University of Ostrava, Czech Republic
Keyword(s):
3D reconstruction, Camera calibration, Depth from focus, Depth from illumination, Bryophyte canopy, Surface roughness.
Related
Ontology
Subjects/Areas/Topics:
Bioinformatics
;
Biomedical Engineering
;
Biomedical Signal Processing
;
Electromagnetic Fields in Biology and Medicine
Abstract:
This paper covers the topic of three dimensional reconstruction of small textureless formations usually found in biological samples. Generally used reconstructing algorithms do not provide sufficient accuracy for surface analysis. In order to achieve better results, combined strategy was developed, linking stereo matching algorithms with monocular depth cues such as depth from focus and depth from illumination. Proposed approach is practically tested on bryophyte canopy structure. Recent studies concerning bryophyte structure applied various modern, computer analysis methods for determining moss layer characteristics drawing on the outcomes of a previous research on surface of soil. In contrast to active methods, this method is a
non-contact passive, therefore, it does not emit any kind of radiation which can lead to interference with moss photosynthetic pigments, nor does it affect the structure of its layer. This makes it much more suitable for usage in natural environment.