摘要
通过自行研制的图像放大及采集系统,对霜层生长初期冰晶体的形态进行了显微观测,得到了不同生长条件下冰晶体的图像.随后采用数字图像处理的方法,将原图像转换为二值图,并使用计盒维数的方法对图像进行了分形分析.结果表明,充分发展的树枝状冰晶体在一定的尺度范围内具有分形特征,并求得其分形维数;而尚未充分生长的冰晶体则不具有分形特征.最后讨论了分形维数在研究霜层生长过程中的意义,为建立更加符合实际情况的霜层生长模型提供了基础.
Using a system of image magnification and acquisition, we observed and collected pictures of ice crystal in various shapes under different growth analysis was performed with the conditions. The original box-counting dimension. The pictures were converted into binary images, and fractal results show that the dentritic ice crystal has a fractal structure, and the fractal dimension can be obtained. However ice crystals that are not fully developed do not have a fractal structure. The meaning of fractal dimension is discussed. This study provides a basis for a frost growth model that is close to reality.
出处
《应用科学学报》
CAS
CSCD
北大核心
2007年第2期193-197,共5页
Journal of Applied Sciences
关键词
结霜
分形
冰晶体
计盒维数
frost formation
fractal
ice crystal
box-counting dimension
