The segmentation of timber defects based on color and the mathematical morphology

摘要

Wood has the texture of natural beauty and elegant color so that it can be widely used in the construction and furniture. So people put the special focus on the texture of wood and they are nearly particular about its color. According to the conventional segmentation method，the characteristics of the wood and the actual production process in a short time of the request，this paper presents a segmentation method of wood panel based on color difference and mathematical morphology. In the HSI space，it firstly focus on select morphological edge detection of H component and I component. Instead of considering the small pixel blocks，it uses median filter to clear it to retain accurate edge image. So edge detection is characterized by the H-component of the color model，then region growing is based on edge information， in order to overcome defects of pseudo edge. In this paper， it uses the boundary information to select seed points automatically，then it takes a regional model of the regional boundary for the region growing， and finally it splits out a defective portion of the timber well.