A simple photogrammetric method to improve quantitative image analysis in geoscience research

Citation
Je. Caracuel et al., A simple photogrammetric method to improve quantitative image analysis in geoscience research, J SED RES, 70(6), 2000, pp. 1337-1340
Citations number
6
Categorie Soggetti
Earth Sciences
Journal title
JOURNAL OF SEDIMENTARY RESEARCH
ISSN journal
15271404 → ACNP
Volume
70
Issue
6
Year of publication
2000
Part
B
Pages
1337 - 1340
Database
ISI
SICI code
1527-1404(200011)70:6<1337:ASPMTI>2.0.ZU;2-9
Abstract
Sedimentary field surveying uses 2D outcrop images to rapidly and easily ob tain quantitative information. Although photogrammetry is capable of a comp lete and accurate 3D analysis, this technique requires great technical expe rtise, as well as intricate and expensive software and hardware. Rectified digital images, instead, represent a cost-effective and easier method to ob tain accurate 2D images for outcrop modeling and mapping. The present metho dology describes a simple technique to improve quantitative image analysis for outcrop analysis, based on widespread conventional PC software and inex pensive hardware. The proposed methodology treats outcrop digital images with a software deve loped by us in order to salve for colinearity equations, which calculate co ordinates of terrain points. Thus, the geometric correction on the terrain- point coordinates to obtain the rectified images can be done with some comm ercial and widely distributed G.I.S., remote sensing, or photogrammetric pr ograms. The final rectified image represents a metrically consistent perpen dicular view of the outcrop that favors the quantitative image analysis. Th is technique can also be used to improve the photo-mosaicking of different perspective-corrected im ages of the same outcrop, avoiding the usual misfi t of the image frames.