Image Segmentation and Its Effect of Asphalt Mixtures Using Computed Tomography Images Method

A circular blocking method is designed on the basis of OTSU method.This method is proposed to resolve the technical problems of segmentation between target aggregate particles and asphalt mortar background in CT image gray of pavement core samples without obvious bimodal.Moreover,evaluation studies are carried out through designing experiments emphatically from image segmentation.The results show that the quality of image segmentation has been improved significantly by using circular blocking method and OTSU method together.Furthermore,comparing with the optimal threshold method(Manual),the accuracy of the circular block OTSU method is evaluated quantitatively by using area ratio of aggregate particles as an indicator,and the result turns out to be ideal.