This paper presents a mathematical model for calculating specular reflection of sin gle-jersey knitted fabrics using a three-dimensional analysis. A computer simulation program based on the model is developed to generate goniophotometric curves using Cartesian coordinates and Euler angles derived from the geometry of a knitted loop. Two correction factors are introduced by taking into consideration the sensor and sam ple geometry. The theoretical work is verified with a black monofilament yam with nine different values of tilted and rotated angles and two black single-jersey knitted fabrics made from monofilament yams. There is good agreement between the simulated and measured curves for both cases.
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