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Heritage Science

Table 3 The comprehensive assessment of different deterioration patterns in Baodingshan Grotto

From: Hyperspectral estimation method for deterioration of rock carvings in the humid regions of southern China

Deterioration assessment

Original state

Surface integrity damage

Surface morphological change

Surface color change

Biological colonization

Deterioration index

Weathering index

1

0.914

0.528

2.038

0.595

–

Region b

0.323

0.139

0.008

0.199

0.331

1.144

Region c

0.449

0.148

0.017

0.091

0.295

1.183

Region d

0.385

0.176

0.015

0.103

0.321

1.196

Region f

0.441

0.206

0.007

0.125

0.221

1.112

  1. Weathering index is determined by the chemical composition of samples, and the percentage of deterioration patterns in each region is identified by hyperspectral imaging. Deterioration index is calculated by weathering index and hyperspectral imaging, which is proportional to the severity of deterioration
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