Research on Coal and Rock Type Recognition Based on Mechanical Vision

Table 4

Identification accuracy test.

Type	Number of correct identifications	Total number of tests	Recognition accuracy (%)	Automatic identification number
Granite	20	20	100	20
Sandstone	20	20	100	20
Quartz sandstone	20	20	100	20
Diabase	20	20	100	20
Shale	18	20	90	20
Quartzite	20	20	100	20
Limestone	18	20	90	20
Anorthosite	19	20	95	20
Anthracite	20	20	100	20
Coking coal	20	20	100	20
Fat coal	4	20	20	20
Gas fat coal	8	20	40	20
Gas coal	4	20	20	20
Lignitous coal	13	20	65	20
Lignitous coal gangue	12	20	50	20
Bituminous coal gangue	19	20	95	20