Appearance of textile fabrics, such as natural fiber textiles including cotton and wool, and synthetic fiber textiles, including nylon and polyester, is one of the important properties along with the handle of fabrics that are closely related to the factors that govern the preferences of end-users. When light rays impinge upon the synthetic filament fiber surface, they are separated into reflected and refracted components whose intensities are reduced relative to that of the incident beam. The filament configuration in the yarn comprising the fabric has great influence on the reflected and refracted, or transmitted light of the fabric. Reflective properties of filament yarn were simulated based on a three-dimensional crimped filament model that reflects and refracts light rays. Transmissive properties were simulated like-wise based on a three-dimensional cylinder model. Images of nylon filament plain fabric were analyzed using image analysis methods for transmitted and reflected light and compared with the results from the three-dimensional models. The properties predicted by the three-dimensional models established in this work could explain the transmission and reflection of actual nylon filament fabric samples.