Python映像替代 [英] Python imaging alternatives

问题描述

我有一个python代码，需要做一些简单的事情到照片：裁剪，调整大小和覆盖水印。我使用PIL，resample / resize结果是TERRIBLE。我使用了imagemagick，界面和命令的设计是将一只猫包装在一个盒子里，然后在键盘上反复扔下一组楼梯。

I have python code that needs to do just a couple simple things to photographs: crop, resize, and overlay a watermark. I've used PIL, and the resample/resize results are TERRIBLE. I've used imagemagick, and the interface and commands were designed by packaging a cat in a box, and then repeatedly throwing it down a set of stairs at a keyboard.

我正在寻找不是PIL或Imagemagick的东西，我可以使用python做简单的，高质量的图像转换。对于这一点，如果命令行界面是好的，它甚至不需要有python绑定。

I'm looking for something which is not PIL or Imagemagick that I can use with python to do simple, high-quality image transformations. For that matter, it doesn't even have to have python bindings if the command line interface is good.

哦，它需要相对平台无关，我们的生产服务器是linux，但我们的一些开发人员在Windows上开发。它不能要求安装一堆愚蠢的gui代码用作库。

Oh, and it needs to be relatively platform agnostic, our production servers are linux, but some of our devs develop on windows. It can't require the installation of a bunch of silly gui code to use as a library, either.

推荐答案

我已使用PIL，重新取样/调整大小的结果为TERRIBLE。

I've used PIL, and the resample/resize results are TERRIBLE.

1. 仅使用Image.ANTIALIAS过滤进行缩减操作


2. 仅使用Image.BICUBIC


3. 请勿在调整大小之前将其转换为RGB颜色模式。
.thumbnail（）。 it's crap

4. 在保存JPEG时将 quality = 级别设置为适当的值（默认值相当低）

1. use only Image.ANTIALIAS filtering for downscaling operations
2. use only Image.BICUBIC filtering for upscaling operations.
3. remember to convert to 'RGB' colour mode before the resize if you are using a paletted image
4. don't use .thumbnail(). it's crap
5. set the quality= level to something appropriate when saving JPEGs (the default is quite low)

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