Geißler, Peter
Jähne, Bernd
1995-03-22
<p>A one-image depth-from-focus technique for the measurement of the concentration and size distribution of small particles is described. The technique is based on a precise knowledge of the 3-D point spread function and requires objects of uniform brightness and simple shapes. The true area of the object and the distance from the focal plane is obtained from parameters such as the apparent (blurred) area of the object and the mean brightness in this area. The technique has been applied to measure the size distribution of bubbles submerged by breaking waves. A depth criterion is used to define a virtual measuring volume that is roughly proportional to the size of the bubbles.</p>
https://doi.org/10.5281/zenodo.14891
oai:zenodo.org:14891
Zenodo
https://zenodo.org/communities/asi
https://doi.org/
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
ISPRS Intercommission Workshop "From Pixels to Sequences", Zurich, Switzerland, 22-24 March 1995
depth-from-focus
gas bubbles
bubble imaging
One-image depth-from-focus for concentration measurements
info:eu-repo/semantics/conferencePaper