| 微粒场全息图自动分析技术的研究 |
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| 引用本文： | 何向东,项世法,王朋,朱竹林. 微粒场全息图自动分析技术的研究[J]. 大连理工大学学报, 1988, 0(2) |
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| 作者姓名： | 何向东 项世法 王朋 朱竹林 |
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| 作者单位： | 大连理工大学物理系(何向东，项世法，王朋)，大连理工大学物理系(朱竹林) |
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| 摘 要： | 利用数字图象处理系统及相应的软件．实现对柴油机燃油喷雾场全息图的自动分 析．统计单位体积内油粒的大小、数目及分布．简要叙述喷雾场全息图的拍摄及再现。 着重介绍自动分析全息图的方法，如聚焦粒子的判断，灰度阈值的选取，分辨率及放 大率的考虑及插值运算等。给出了离轴雾场全息图的实际处理数据．自动分析的结果 与其它方法统计的结果符合，但时间大为缩短．为研究柴油机雾场和其它类似场合提 供了强有力的研究手段。
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| 关 键 词： | 图象信息处理系统 全息图 激光全息照相 喷雾燃烧 灰度 梯度 阈值 放大率 |
Study on Auto-Analysis of Particle Field Hologram |
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| He Xiangdong,Xiang Shifa,Wang Peng,Zhu Zhulin. Study on Auto-Analysis of Particle Field Hologram[J]. Journal of Dalian University of Technology, 1988, 0(2) |
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| Authors: | He Xiangdong Xiang Shifa Wang Peng Zhu Zhulin |
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| Abstract: | With the help of the digital image processing system as well as the corresponding software, the auto-data processing on the spray field hologram of a diesel nozzle is achieved for counting and sizing the oil dropltes.Taking and reconstructing the hologram is briefly described. The techniques of auto-analysis are introduced,such as determining the focus particle imag,esetting density threshold, considering resolution and the am- plification,and the interpolation,etc.The processed results of an off-axis ho logramare listed which well coincide with those obtained by other method, but the time for processing a frame of picture is much shorter. It offers a powerful means for studying the spray field of the diesel engine or other similar fields. |
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| Keywords: | pattern information processing systems hologram laser photography spray combustion gray scale threshold values magnification |
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