如何在python子进程中指定图像输出的维度？

Question

我想将pdf文件转换为图片。我想指定图像的输出维度。我该怎么做？

import subprocess
#I want to pass output dimension as parameter. How do I do that 
params = ['convert','./data/in.pdf','thumnails.jpg']
subprocess.check_call(params) 

Answer 1

虽然我并不真正使用image-magick或convert命令行命令。但我做了一些研究，发现你可以使用-resize参数来调整图像大小。您可以参考here和here以及here了解详情。要将其合并到从subprocess开始运行，您可以执行以下操作：

import subprocess
#I want to pass output dimension as parameter. How do I do that 
params = ['convert','./data/in.pdf','-resize', '100x100', 'thumnails.jpg'] # replace 100x100 with your width x height 
subprocess.check_call(params) 

或者，您可以尝试使用-density参数：

params = ['convert', '-density', '100x100', './data/in.pdf', 'thumnails.jpg'] # replace 100x100 with your width x height