摘要
针对环境一号卫星拍摄到的水质遥感监测图,相对于实际水域的水质分布状况存在一定的差异,严重影响到水质监测报告的精确度,由此提出一种基于分段线性回归的水质遥感图像校正算法,利用监测水域实际测量到的实时数据和反演结果图的最小值、最大值和均值,将这3对数据进行分段线性回归,得到校正公式并完成校正。实验结果表明该算法校正精度高、速度快,极大地提高了水质监测报告的精确度。
For the difference between the water quality of image taken by HJ-1 satellite and the actual water quality affects the accuracy of water quality monitoring report seriously,a correction algorithm of remote sensing image based on piecewise linear regression is proposed.The algorithm uses the min,max and the average values which got from both image inversion and actual measurement of water area,then gets the correction formula and completes the correction.The experiment result has proved the high efficiency and accuracy of this algorithm which greatly improved the accuracy of water quality monitoring report.
出处
《遥感信息》
CSCD
2010年第6期39-43,共5页
Remote Sensing Information
基金
"十一五"国家科技支撑计划重点项目(2008BAC34B05)
关键词
水质
遥感图像
分段线性回归
图像校正
water quality
remote sensing image
piecewise linear regression
image correction
