I3D Ink Line Intersection Dataset

This dataset accompanies the ICDAR 2025 paper “A learning-based method for automatically determining application sequence of intersecting ink lines using photometric stereo.”
It contains intersecting ink-line samples collected from 30 writers, 50 samples per writer (total 1,500). Each sample provides RGB, surface normal, and depth data, together with oriented bounding-box ground truth annotations indicating top/bottom strokes.