A Practical Ply-Based Appearance Modeling for Knitted Fabrics

TL;DR

This paper presents an efficient ply-based appearance model for knitted fabrics that captures detailed fiber-level geometry and light interactions, enabling realistic rendering of various knitting patterns.

Contribution

It introduces a practical ply-based model that accurately represents knitted fabric appearance with fiber-level detail and supports user-specified knitting patterns.

Findings

Model captures fine-grained knit geometries.

Qualitative comparisons show realistic rendering.

Supports diverse knitting patterns.

Abstract

Modeling the geometry and the appearance of knitted fabrics has been challenging due to their complex geometries and interactions with light. Previous surface-based models have difficulties capturing fine-grained knit geometries; Micro-appearance models, on the other hands, typically store individual cloth fibers explicitly and are expensive to be generated and rendered. Further, neither of the models have been matched the photographs to capture both the reflection and the transmission of light simultaneously. In this paper, we introduce an efficient technique to generate knit models with user-specified knitting patterns. Our model stores individual knit plies with fiber-level detailed depicted using normal and tangent mapping. We evaluate our generated models using a wide array of knitting patterns. Further, we compare qualitatively renderings to our models to photos of real samples.