A Real Time Coal Content/Ore Grade (C2OG) Sensor, Technical Report: January - March 2003 (open access)

A Real Time Coal Content/Ore Grade (C2OG) Sensor, Technical Report: January - March 2003

This seventh quarterly technical report discusses the progress made on a machine vision technique for determining coal content and ore grades. Considerable progress has been made on coal analysis. Naval Research Laboratory (NRL) target recognition software has been tested and incorporated into the system. This software decreases analysis time considerably and is more intuitive to use. Work with board-level computers has proceeded well; ultimately this will make the technology more compact and fieldable. Work with talc will be delayed because the graduate student working on this project is leaving the program. Ongoing work is devoted to more detailed coal analysis, improving the software interface, and developing procedures and a users manual.
Date: April 28, 2003
Creator: Swanson, Rand
System: The UNT Digital Library
A Real Time Coal Content/Ore Grade (C2OG) Sensor, Technical Report: January - March 2004 (open access)

A Real Time Coal Content/Ore Grade (C2OG) Sensor, Technical Report: January - March 2004

This eleventh quarterly technical report discusses the installation of a spectral machine vision system in the Stillwater mine's core room. In brief, the system has been fabricated, installed, and preliminary measurements have been made. A first round of refinements has been made, included replacing a bad bearing and applying filters to the lighting. A high-speed Spectral Angle Mapper (SAM) program was written to classify the cores in real time. This program identifies sulfides in the core sample quite well, but also produces false positives at boundaries and breaks in the core. Additionally, bright reflections from facets within the ore occasionally saturate the camera. Overall, the project is on schedule, but additional refinement in the algorithm and lighting is required to obtain more accurate results.
Date: April 27, 2003
Creator: Swanson, Rand
System: The UNT Digital Library