This article presents a new quantitative method of evaluating seam pucker in woven fabric with five shape parameters. This method is proposed using fuzzy logic, based on obtained data from a three-dimensional designed scanning. Measurement data in a parallel direction with the seam line is used to determine five shape parameters, such as amplitudes, wavelengths and wave generating points, which have been determined according to geometric model of Chang Kyu Park. For objective evaluation of seam pucker by AATCC (American Association of Textile Chemists and Colorist) standards, a fuzzy system is constructed from pattern recognition.