Automatic Binding Point and Surface Helix Angle Measurement in Historic Weft-Faced Compound Weave Figured Silks

Structural analysis of textiles using image processing has been explored by many researchers. Topics have ranged from quality control for modern textiles to investigation of historical weaving processes. Our research concerns analysis of ancient weft-faced compound weave figured silks dated between AD 600-1200. The complex draw looms used to weave these silks included a pattern harness to memorize pattern selection sequences. The capability to store work for later use is important in both historical and technical terms. Specifically we are interested in devising nondestructive characterization methods to measure attributes including binding point distance and yarn helix angle. We describe some of the challenges involved in selecting computer vision algorithms appropriate for automated measurement processes.