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WAVELET-BASED THREE-DIMENSIONAL DESCRIPTORS OF AGGREGATE PARTICLES.
| 题名： | WAVELET-BASED THREE-DIMENSIONAL DESCRIPTORS OF AGGREGATE PARTICLES. |
| 作者： | Kim-H; Haas-CT; Rauch-AF; Browne-C |
| 关键词： | Aggregate-shape; Aggregates-; Angularity-; Automated-laser-profiling; Morphology-; Texture-; Three-dimensional-data; Wavelets- |
| 摘要： | Morphological characteristics of stone aggregates, including particle shape, angularity, and surface texture, have a significant impact on the performance of hot-mix asphalt materials. To accurately identify and quantify these critical aggregate characteristics, well-defined particle descriptors are essential. Moreover, because a large number of irregular particles must be assessed to adequately characterize an aggregate material, descriptors that can be quantified with automated machines are preferred. In processing true three-dimensional (3-D) data from a laser scanner, wavelet-based 3-D particle descriptors are proposed as a way to characterize individual stone particles. Aided by the multiresolution analysis feature of the wavelet transform, these descriptors provide a generalized, comprehensive, and objective way of describing aggregates. This approach was implemented in conjunction with an automated laser-profiling device built for rapidly characterizing the size and shape properties of aggregate samples. Tests with this equipment have produced data that show strong correlations between the wavelet-based particle descriptors and visual perceptions of the aggregate morphological properties. These results demonstrate that the wavelet-based approach is a promising method for quantifying these important aggregate properties. |
| 总页数： | Transportation Research Record. 2002. (1787) pp109-116 (10 Fig., 17 Ref.) |
| 报告类型： | 科技报告 |
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