Sökning: L773:0277 786X OR L773:1996 756X OR L773:9781628415568
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Range camera on con...
Range camera on conveyor belts: estimating size distribution and systematic errors due to occlusion
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- Blomquist, Mats (författare)
- Luleå tekniska universitet
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- Wernersson, Åke (författare)
- Luleå tekniska universitet,EISLAB
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(creator_code:org_t)
- SPIE, 1999
- 1999
- Engelska.
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Ingår i: Proceedings of SPIE, the International Society for Optical Engineering. - : SPIE. - 0277-786X .- 1996-756X. ; 118, s. 118-126
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- When range cameras are used for analyzing irregular material on a conveyor belt there will be complications such as missing segments caused by occlusion. Also, a number of range discontinuities will be present. In the framework towards stochastic geometry, conditions are found for the cases when range discontinuities take place. The test objects are pellets for the steel industry. An illuminating laser plane will give range discontinuities at the edges of each individual object. These discontinuities are used to detect and measure the chord created by the intersection of the laser plane and the object. From the measured chords we derive the average diameter and its variance. An improved method is to use a pair of parallel illuminating light planes to extract two chords. The estimation error for this method is not larger than the natural shape fluctuations (the difference in diameter) for the pellets. The laser-camera optronics is sensitive enough both for material on a conveyor belt and free falling material leaving the conveyor.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- Industrial Electronics
- Industriell elektronik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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