Table 5 Experimental recognition operator result of mineral green,light intensity (#1) for different cases in group 2

From: Digital restoration of mural paintings from late Tang tomb M1373 in Xi’an based on hyperspectral analysis and image interaction processing

Normalization operator value (The smaller the better)

Mineral green, Light intensity (#1)

Verdigris, Light intensity (#1)

Mineral green Light intensity (#2)

Verdigris Light intensity (#2)

Mineral green Light intensity (#3)

Verdigris Light intensity (#3)

SAM operator

0.000

0.878

0.1024

0.9339

02113

1

SID operator

0.000

0.8175

0.0348

0.8957

0.09568

1

Mixed operator

0.000

0.6726

0.002175

0.805

0.0164

1

  1. Bold indicates the optimal value in the current comparison group.