Powershell - Move Images in Subdirectories + Maintain Directory Structure

Question

I want to move all images in a directory, including subdirectories, to a new location while maintaining the existing folder structure.

Following the example, here, I put the objects into a variable, like so:

$picMetadata = Get-FileMetaData -folder (Get-childitem K:\myImages -Recurse -Directory).FullName

The move must be based on the results of a logical expression, such as the following for example.

foreach ($test01 in $picMetadata)  { 
 if ($test01.Height -match "^[0-9]?[0-9] ") { 
 Write-Host "Test01.Height:" $test01.Height 
} 
}

Still at an early testing phase So far, I'm having no success even testing for the desired files. In the example above, I thought this simple regex test might provide for anything from "1 pixels" to "99 pixels", which would at least slim down my pictures collection (e.g. an expression without the caret, like "[0-9][0-9] " will return "NN pixels" as well as "NNN Pixels", "NNNNNN pixels", etc.)

Once I figure out how to find my desired images based on a logical, image object dimensions test, I will then need to create a script to move the files. Robocopy /MOV would be nice, but i'm probably in over my head already.

I was going to try to base it on this example (which was provided to a User attempting to COPY (not move / copy/delete) *.extension files). Unfortunately, such a simple operation will not benefit me, as I wish to move .jpg,.png,.gif, etc, based on dimensions not file extension:

$sourceDir = 'K:\myImages\'
$targetDir = ' K:\myImages_psMoveTest\'

Get-ChildItem $sourceDir -filter "*" -recurse | `
    foreach{
        $targetFile = $targetDir + $_.FullName.SubString($sourceDir.Length);
        New-Item -ItemType File -Path $targetFile -Force;
        Copy-Item $_.FullName -destination $targetFile
    }

Perhaps you have a powershell script that could be used for my intended purpose? I'm just trying to move smaller images out of my collection, without having to overwrite same name images, and lose folder structure, etc.

Thank you very much for reading, and any advisory!

(Edit: Never opposed to improving Powershell skill, if you are aware of a freeware software which would perform this operation, please advise.)

Answer 1

If I understand your question correctly, you want to move image files with a pixel height of 1 up to 99 pixels to a new destination folder, while leaving the subfolder structure intact.

If that is true, you can do:

# needed to use System.Drawing.Image
Add-Type -AssemblyName System.Drawing

$sourceDir = 'K:\myImages'
$targetDir = 'K:\myImages_psMoveTest'

Get-ChildItem $sourceDir -File -Recurse | ForEach-Object {
    $file = $_.FullName   # need this for when we hit the catch block
    try {
        # Open image file to determine the pixelheight
        $img    = [System.Drawing.Image]::FromFile($_.FullName)
        $height = $img.Height
        # dispose of the image to remove the reference to the file
        $img.Dispose()
        $img = $null
        if ($height -ge 1 -and $height -le 99) {
            $targetFolder = Join-Path -Path $targetDir -ChildPath $_.DirectoryName.Substring($sourceDir.Length)
            # create the target (sub) folder if it does not already exist
            $null = New-Item -Path $targetFolder  -ItemType Directory -Force
            # next move the file
            $_ | Move-Item -Destination $targetFolder -ErrorAction Stop
        }
    }
    catch {
        Write-Warning "Error moving file '$file': $($_.Exception.Message)"
    }
}