math

http://commons.apache.org/proper/commons-math/download_math.cgi   

http://www.cnblogs.com/lxchutao/p/3203905.html

http://www.korf.co.uk/spline.pdf

https://jetcracker.wordpress.com/2014/12/26/constrained-cubic-spline-java/

 http://www.2cto.com/kf/201409/330281.html

一个软件

http://www.cnblogs.com/lxchutao/p/3203905.html

http://www.paulinternet.nl/?page=bicubic  

矩阵 求逆

http://www.codelast.com/?p=1288