Method and apparatus for image analysis of composite ores

Details Method and apparatus for image analysis of composite ores Method and apparatus for image analysis of composite ores

1991-08-30

1994-04-12

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 18, 382 23, 382 1, 356432, 348142, G06K 900, G06K 946, G01N 2100, H04N 718

Patent

active

053033108

ABSTRACT:
The relative concentration of opaque and translucent ore particles is determined by illuminating a falling stream of particles with a source of backlighting which provides a diffused background light source for detecting opaque particles and a relatively brighter light source for further illuminating translucent particles. Scanning a captured image of the falling particle stream for light and dark light images relative to the background light permits the relative concentration of opaque and translucent particles to be determined. The method is particularly useful for beneficiated composite phosphate ores containing desirable opaque phosphate particles and undesired translucent quartz particles.

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