ImageMagick
是一个用来创建、编辑、合成图片的软件。它可以读取、转换、写入多种格式的图片。图片切割、颜色替换、各种效果的应用，图片的旋转、组合，文本，直线，
多边形，椭圆，曲线，附加到图片伸展旋转。ImageMagick是免费软件：全部源码开放，可以自由使用，复制，修改，发布。支持大多数的操作系统。
ImageMagick 6.6.0 的几个版本的改进内容如下：
- 2010-03-13 6.6.0-6
- Add support for the Adobe Large Document format.
- Recognize -remap option for the mogrify utility.
- The default Helvetica font is not always available, check for
Century Schoolbook too (reference
http://www.imagemagick.org/discourse-server/viewtopic.php?f=2&t=15780).
- 2010-03-11 6.6.0-5
- Permit user to get virtual pixels with a region width of 0.
- Reformulate the jinc() functio so that the main peak is of
amplitude of 1.
- Resampling filter must respect the image virtual pixel method.
- 2010-03-07 6.6.0-4
- The -evaluate-sequence option behaves like -evaluate except it
operates on a sequence of images.
- 2010-03-05 6.6.0-2
- Add support for the -maximum and -minimum options.
- 2010-02-27 6.6.0-1
- Check to see if ICON image width /height exceeds that of the image
canvas.
- Set the DPX descriptor to Luma only if the image type is not
TrueColor.
- Add support for -fx airy(), j0(), j1(), jinc(), and sinc()
(reference
http://www.imagemagick.org/discourse-server/viewtopic.php?f=2&t=15685).
Anthony, review these for correctness.
- Don't embed an XMP profile in an EPS image for now.
- 2010-02-21 6.6.0-0
- Insufficient image data in EPT is a warning rather than an error.
- Respect -type TrueColor when writing gray DPX images.
- Fix problem reading 10-bit grayscale DPX images when scanline
length is not a multiple of 3.
- BMP has an alpha channel, it was treated as an opacity channel.
下载地址： http://www.imagemagick.org/script/download.php
