Three dimensional particles identification and shape parameters research on coarse aggregates of asp

• 作 者: 段跃华 张肖宁 张顺先 苑苗苗
• 机 构: School of Civil Engineering and Transportation,South China University of Technology,Guangdong Hualu
• 出 处: Journal of Harbin Institute of Technology
• 发表日期: 2011年05期
• 关键词: asphalt mixture X-ray CT three dimensional matching chain code sphericity

In this paper a series of digital image processing methods were adopted for getting separated coarse aggregates from asphalt mixture specimen using high-resolution X-ray Computed Tomography (CT) images.The existing three dimensional (3D) particles matching methods based on two dimensional (2D) continuous cross-sections were analyzed and a new ’overlap area method’ was presented.After the 3D particles were extracted one by one successfully,the basic parameters of each aggregate:perimeter,area,surface area,and volume were calculated by chain code method.Finally,the 3D mass center coordinates and the sphericity index were introduced.

In this paper a series of digital image processing methods were taken for getting separated coarse aggregates from asphalt mixture specimen using high-resolution X-ray Computed Tomography (CT) images. The existing three dimensional (3D) particles matching methods based on two dimensional ( 2D) continuous cross-sections were analyzed and a new ’overlap area method’ was presented. After the 3D particles were extracted one by one successfully, the basic parameters of each aggregate: perimeter, area, surface area, and volume were calculated by chain code method.Finally, the 3D mass center coordinates and the sphericity index were introduced.