通过Powershell进行智能图像搜索 [英] Smart image search via Powershell

问题描述

我对通过自定义属性进行文件搜索感兴趣。例如，我想找到具有特定尺寸的所有JPEG图像。看起来像是

I am interested in file searching by custom properties. For example, I want to find all JPEG-images with certain dimensions. Something looks like

Get-ChildItem -Path C:\ -Filter *.jpg -Recursive | where-object { $_.Dimension -eq '1024x768' }

我怀疑它是关于系统的使用。画画。怎么做？
提前致谢

I suspect it's about using of System.Drawing. How it can be done? Thanks in advance

推荐答案

这实际上很容易做到，你对System.Drawing的直觉实际上是正确的：

That's actually pretty easy to do and your gut feeling about System.Drawing was in fact correct:

Add-Type -Assembly System.Drawing

$input | ForEach-Object { [Drawing.Image]::FromFile($_) }

将其另存为 Get-Image.ps1 在您的路径中的某个地方，然后您就可以使用它。

Save that as Get-Image.ps1 somewhere in your path and then you can use it.

另一种选择是添加跟随 $ profile ：

Another option would be to add the following to your $profile:

Add-Type -Assembly System.Drawing

function Get-Image {
    $input | ForEach-Object { [Drawing.Image]::FromFile($_) }
}

其工作方式基本相同。当然，在你认为合适的时候添加像文档这样的花哨的东西。

which works pretty much the same. Of course, add fancy things like documentation or so as you see fit.

然后你就可以使用了：

gci -inc *.jpg -rec | Get-Image | ? { $_.Width -eq 1024 -and $_.Height -eq 768 }

请注意应该在使用它们之后处理以这种方式创建的对象。

Note that you should dispose the objects created this way after using them.

当然，你可以添加一个自定义的 Dimension 属性，这样你可以过滤：

Of course, you can add a custom Dimension property so you could filter for that:

function Get-Image {
    $input |
        ForEach-Object { [Drawing.Image]::FromFile($_) } |
        ForEach-Object {
            $_ | Add-Member -PassThru NoteProperty Dimension ('{0}x{1}' -f $_.Width,$_.Height)
        }
}

这篇关于通过Powershell进行智能图像搜索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IT屋！