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Image edge detection of wood defects based on multi-fractal analysis

A reliable detection method for X-ray image of wood with defects based on the multi-fractal analysis was presented in the paper. Adopting singular Holder index and multi-fractal spectrum theory and computing the singular value and multi-fractal spectrum of each pixel point of image edges of wood defects in order that the images were identified easily. According to the experimental results, the given algorithm can reduce unimportant edge information, while it also keeps some important detail information of the image well by correction of the measure. It is useful and current method for image processing. This study lays a foundation for automatic recognition. It is significant for the modern wood processing and utilization.