算法介绍 矩阵求逆在程序中很常见，主要应用于求Billboard矩阵。按照定义的计算方法乘法运算，严重影响了性能。在需要大量Billboard矩阵运算时，矩阵求逆的优化能极大提高性能。这里要介绍的矩阵求逆算法称为全选主元高斯-约旦法。 高斯-约旦法（全选主元）求逆的步骤如下： 首先，对于 k 从 0 到 n - 1 作如下几步： 从第 k 行、第 k 列开始的右下角子阵中选取绝对值最大的元素，并记住次元素所在的行号和列号，在通过行交换和列交换将它交换到主元素位

Mainly by David Woodhouse, somewhat modified by Jordan Crous.

pixman and cairo and Mathematics for Game Programmers lcms uses gauss-jordan elimination with partial pivoting which is less efficient and not as numerically stable. See Mathematics for Game Programmers. - pixman and cairo and Mathematics for Game

Implementation of embedding information into an image using Method Cutters - Jordan bo-Implementation of embedding information into an image using Method Cutters - Jordan boss