Research on denoising method of metal fracture image
Zhang Jia-sh · Computer Engineering and Applications Journal · 2010
Analysis of metal fracture images can provide important information for research such as performance,action of metal materials.Denoising preprocessing of metal fracture images is vital for morphology analysis of metal fracture.Firstly im-ages are divided into noise sub-image,inner region sub-image and edge sub-image.Then adaptive anisotropic diffusion filter is designed according to the fracture images with different noise.The adaptive anisotropic diffusion filter made parameters de-termination and the termination of iteration automatically.The filter has better adaptation for different noise,more accurate of smoothing selection,furthermore,protects edges and low contrast regions better.The experimental results show that the im-proved method has better performance of anti-noise and detail preservation,which are essential to the accuracy of pattern analysis and quantity computation.