| 不同核函数RVM的冰凌检测能力比较 |
| |
| 引用本文： | 王春光,徐琪,陈刚,赵根庄.不同核函数RVM的冰凌检测能力比较[J].地理空间信息,2012(2):67-69,75. |
| |
| 作者姓名： | 王春光 徐琪 陈刚 赵根庄 |
| |
| 作者单位： | [1]河北省基础地理信息中心,河北石家庄050031 [2]武汉大学遥感信息工程学院,湖北武汉430079 [3]国土环境与灾害监测国家测绘局重点实验室,河北石家庄050031 |
| |
| 摘 要： | 利用HJ-1A/1B卫星CCD数据进行黄河凌汛监测,提出了利用相关向量机的检测冰凌,并对比了不同核函数的冰凌检测效果。实验结果显示利用RVM和HJ-1A/1B卫星CCD数据能有效提取出黄河冰凌范围,RBF核函数的稳定性和精度要高于改进型RBF核函数,但改进型RBF核函数的相关向量的个数要明显少于RBF核函数,因此测试速度要高于RBF核函数。
|
| 关 键 词： | 凌汛 冰凌 RVM RBF HJ |
Comparison of River Ice Detection Capabilities of Different RVM Kernel Function |
| |
| Institution: | WANG Chunguan |
| |
| Abstract: | In this paper we presented a river ice detection method based on relevance vector machines(RVM) use HJ-1A/1B CCD data,and compared ice detection accuracy of the different kernel functions.Experimental results clearly demonstrated that RBF kernel function was more stabile than adapted RBF kernel,detection accuracy of RBF kernel function was slightly higher than adapted RBF kernel,however the sparsity of adapted RBF kernel was higher than RBF kernel function which lead to much faster testing time. |
| |
| Keywords: | ice flood river ice RVM RBF HJ |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
