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題名 | 河床質粒徑分布之數位影像光篩分析=Analysis of Bed Material Grain Size Distribution Using Digital Photosieving |
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作者 | 陳嘉欣; 邵允銓; 王驥魁; 吳富春; | 書刊名 | 農業工程學報 |
卷期 | 54:4 2008.12[民97.12] |
頁次 | 頁16-32 |
分類號 | 443.64 |
關鍵詞 | 河床質; 粒徑分布; 數位影像; 光篩分析; Bed material; Grain size distribution; Digital images; Photo-sieving; |
語文 | 中文(Chinese) |
中文摘要 | 河床質係由不同大小及形狀之泥砂與礫石顆粒所組成,對河床糙度、形貌與河川棲地型態有極大之影響。傳統之河床質粒徑分布調查方式費時耗力,近年來數位科技長足進步,使用數位相機拍照採樣並結合光篩軟體進行影像處理與粒徑分析,不但可增進調查工作之效率與便利性,更可大幅減少耗費之人力與成本。 本研究對目前唯一一套針對河床質粒徑分析之光篩軟體做一完整介紹與參數檢定,並利用八種不同粒徑組合與乾濕狀況進行結果驗證。研究結果顯示使用光篩軟體進行粒徑分析具有高度可行性,本研究對後續使用光篩軟體分析河床質粒徑分布亦提供具體之建議。 |
英文摘要 | Bed material is composed of sands and gravels with different sizes and shapes, and affects the bed roughness, topography, and habitat morphology. Traditional methods for analyzing the bed material grain size distribution are labor intensive and time consuming. Recent advancement in digital technology makes it possible to sample the bed material with digital cameras and quantify the grain size distribution with image processing and analysis software; thus significantly improves the sampling efficiency and lowers the costs. In this work we first introduce the only available photo-sieving software that is specifically designed for bed material grain size analysis, and perform parameters calibration. Eight combinations of uniform and mixed-size grains with dry and wet conditions are used to test and verify the software. The results clearly indicate the feasibility of the photo-sieving software for the grain size analysis. Some practical suggestions are also proposed for future applications of the software. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。