Abstract: The pew method how to utilize the digital image processing techniques based on close-range photogrammetric technology to determine the grain size grading of the relax accumulation was introduced. Its technical solution was to shoot the object with a digital camera from various angles and to import the pictures into the computer to do the image processing. Finally , the model was established and the test dada were analyzed. Tests results show that the application of image analysis based on close-range photogrammetric technology to relax accumulation grain analysi5 is feasible , with the use of common digital camera , Leica Eedas Imagine and Mapgis 50ft platform. And the proposed method can realize the large-scale engineering use gradually.

Key words: grain size grading, digital image processing techniques, close-range photogrammetric technology, relax accumulation o

摘要： 介绍了基于近景摄影的数字罔像处理技术确定松散堆积体颗粒级配的新方法。其技术方案是，用数码相机对 研究对象拍摄多方位的相片将其导人计算机利用相关软件进行图像处理，实现对象建模并分析试验数据。试验表 明:应用普通数码相机、LEICAERDASIMAGINE和Mapgis软件平台，以近景摄影测量技术为基础的图像法应用于 松散堆积体颗粒分析中是可行的，并能逐步实现在大型工程中的应用。

关键词: 粒度级配, 数字图像处理技术, 近景摄影测量技术, 松散堆积体