Abstract: Introducing the concepts of contour error and branch point, a new approach was put forward and applied to contour extraction from a certain garment images with printing patterns. Firstly, the original contour is extracted based on the morphology, and then the original contour is divided into several single-value branches. Finally, the texture noises are eliminated based on the contour error computation. The results indicated that original contour extraction algorithm based on the morphology can effectively remove image pixels within the garment, the shadow and watermark outside. The contour error computation technology can effectively identify the texture noise data in the branch and repair the effects of printing pattern to garment contour. Meanwhile contrasting to other methods, the proposed algorithm can realize the contour extraction in high efficiency.

Key words: contour extraction, texture noise, contour error, branch point