Surface imaging-enabled non-destructive quantification of gravel armoring cover on granitic residual soil slopes

This dataset is associated with the study titled “Surface imaging-enabled non-destructive quantification of gravel armoring cover on granitic residual soil slopes” (sampling site: Tiancun Town, Ganxian District, Jiangxi Province, China; sampling time: April 2025), and is designed to support the validation of gravel segmentation algorithms and the comparison of coverage quantification methods for gravelly soils.