Optical granulometry is the process of measuring the different grain sizes in a granular material,[1] based on a photograph.

Mining companies can use optical granulometry to analyze inactive or moving rock to quantify the size of these fragments.

[4] Companies are saving millions of dollars annually because of this new technology, and are cutting back on maintenance costs on equipment.

[citation needed] In order for optical granulometry to be completely successful, an accurate photo must be taken – under sufficient lighting, and using proper[clarification needed] technology – to obtain quantified results.

Software uses four basic steps in determining the average size of material: See the Wikipedia article on Photoanalysis to see how mining, forestry and agricultural companies are using this technology to improve quality control techniques.