This groups of data is related to the Optics Express publication: "Non-destructive Analysis of Flake Properties in Automotive Paints with Full-field Optical Coherence Tomography and 3D Segmentation" Auther: Jinke Zhang, Bryan Williams, Samuel Lawman, David Atikinson, Zijian Zhang, Yalin Zheng, Yaochun Shen* The folder 'data4fig2' contains the cross-section data of Indus silver, Mauritius blue, Barolo black and Santorini black samples. data size: 1920x3000 depth size: 0.04 microns lateral size: 1.17 microns The folder 'data4microsopy' contains all the microscopy images for validation. data size: 1616x1216 pixel size: 0.12 microns The folder 'data4table' contains all 45 scanned sections of automotive panel samples (18 for Indus silver, 9 for Mauritius blue, 9 for Barolo black and 9 for Santorini black). IS#1~18: 18 Indus silver samples MB#19~27: 9 Mauritius blue samples BB#28~36: 9 Barolo black samples SB#37~45: 9 Santorini black samples data size: 1920x1200x50 axial size: 0.8 microns lateral size: 1.17 microns