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Particle depth measurement based on depth-from-defocus

โœ Scribed by Shigeru Murata; Masayoshi Kawamura

Book ID
104160370
Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
451 KB
Volume
31
Category
Article
ISSN
0030-3992

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โœฆ Synopsis

An optical and digital method has been developed for the detection of the depth of small particles distributed in 3D space and its performance has been examined in numerical simulations and experiments. The present method is based on depth-fromdefocus in which the depth of particle is detected from the image blur of the particle. The results of numerical simulations show that low-pass ยฎltering is eective for the reduction of error. In the experiments with a single 3CCD color camera, it is found that the RMS error of the present method is 1.81 mm for the depth range of 40 mm.

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