Reading the Relief
Raked-light recording
Low-angle illumination reveals chisel paths invisible under diffuse light, mapping each figure's relief depth to within two millimetres of the original stone surface.
Stone-register coordinates
Every panel is assigned a grid position in the photographic atlas — east gallery bay A-1 through west gallery bay G-42 — cross-referenced to the earliest systematic survey.
Lichen and moss mapping
Biological colonization traces centuries of monsoon runoff across each stone face, revealing which surfaces have sheltered from rain since the 12th century.
Rubbings and overlays
Fragmentary scenes are aligned with complete 19th-century estampages from the founding archive, recovering narrative sequences broken by laterite collapse.