Computer Vision for Warp and Weft Count Verification
topic
Computer vision systems for fabric structure verification count warp and weft threads per centimetre using high-resolution line scan cameras with sub-millimetre pixel resolution and automated image analysis algorithms that identify individual yarn positions in the fabric image, comparing measured thread counts against specification and detecting pick density variations caused by loom stop marks, speed changes, and weft insertion irregularities that would be undetectable by manual sampling.
Role
Provides 100 percent fabric structure verification along the full fabric roll length that identifies thread count deviations and loom stop marks at the position in the roll where they occur, enabling selective cutting of affected lengths rather than entire roll rejection, with automated thread counting also eliminating the measurement error and labour requirement of manual thread count verification that relies on magnifier-based counting by inspectors.