oracle提供的图像库JAI-IO的源代码，JAI支持TIFF、jpg、bmp等格式，提供图形读入和生成、缩放、差值计算、反锯齿等功能-oracle provides JAI-IO image library source code, JAI support TIFF, jpg, bmp format, read and generate graphical, scaling, difference calculation, anti-aliasing and other functions