说明：  GIMP的源码，对图形处理的学习者有很大的帮助，它 是 GNU 图像处理程序(GNU Image Manipulation Program)的缩写。包括几乎所有图象处理所需的功能，号称Linux下的PhotoShop。
(GIMP' s source code, graphics learners of great help, it is the GNU Image Manipulation Program (GNU Image Manipulation Program) acronym. Including almost all of the required image processing functions, known under Linux PhotoShop.)