Characterization of coal particles using rule base on-line image analysis. [Quarterly] technical report, December 1, 1993--February 28, 1994
- Southern Illinois Univ., Carbondale, IL (United States)
Different materials in coal reflect light in a different manner and, therefore, can be identified based on their image of light reflectance characteristics (i.e. shade of gray). Furthermore, liberated and nonliberated pyrite particles are surrounded by media of different shades of gray. With these two pieces of information, the degree of pyrite liberation and the degree of purity of coal macerals can be analyzed through a computer program. Ultimately, this image analysis computer program will acquire and analyze different frames of coal image automatically without any intervention of an operator. During the past one year, an in-depth database of the light reflectance characteristics of different materials of coal has been established. This process is still being continued to extend the database of coal images. During this quarter, a C-language computer program has been developed. This program reads an image and analyzes it according to the database and decision-making criteria developed in the previous study. Thus far this computer program tends to account more particles than what are presented in an image. This is attributed to the electronic noise produced through the CCD camera. The electronic noises are in the order of 1 or two pixels and can be rectified through an additional decision-making rule. In general, this computer program picked up the particles without any intervention from an operator. In other words, this computer can replace an operator to perform the analysis of ultafine coal particles.
- Research Organization:
- Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC22-92PC92521
- OSTI ID:
- 10154716
- Report Number(s):
- DOE/PC/92521-T151; ON: DE94012578; BR: AV0100000/AV0102000
- Resource Relation:
- Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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