问题描述
我有四张图片，a.png，b.png，c.png，d.png。
现在我想组成图像a，b和c并将它们着色后我想用d.png组合结果。我想用一个命令做到这一点：
I have four images, a.png, b.png, c.png, d.png.Now I would like to compose image a, b and c and colorize them after that I would like to compose the result with d.png. I want to do this with one command:
magick a.png b.png c.png -compose -channel R -evaluate multiply 0.9 - channel G -evaluate multiply 0.9 -channel B -evaluate multiply 0.9 d.png -compose result.png
但这对我不起作用要获得正确的输出，我必须通过两个步骤来完成：
But this does not work for me to get the right output I have to made this by two steps:
magick a.png b.png c.png -channel R -evaluate乘以0.9 -channel G -evaluate乘以0.9 -channel B -evaluate multiply 0.9 step.png
和
magick step.png d.png -compose result.png
有没有结合几个命令的解决方案？
Is there any solution to combine several commands?
推荐答案
不太确定你想要做什么，但希望以下想法会有所帮助.. 。
Not too sure what you are trying to do, but hopefully the following thoughts will help...
首先，你有
... -channel R -evaluate multiply 0.9 -channel G -evaluate multiply 0.9 -channel B -evaluate multiply 0.9
当你不妨使用时：
... channel RGB -evaluate multiply 0.9
其次，在选择要处理的特定频道后（使用 -channel ），您应该在最终 -composite +频道） $ C>。所以，我认为你可能会做得更好：
Secondly, after selecting a specific channel to work on (with -channel), you should then revert back to dealing with all channels (using +channel) before your final -composite. So, I think you may do better with this:
magick a.png b.png c.png -composite -channel RGB -evaluate multiply 0.9 +channel d.png -composite result.png
这篇关于Imagemagick结合了几个命令的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！