A PowerShell script to acquire an image from a scanner and to save it in PNG

scan_png.ps1

$deviceManager = new-object -ComObject WIA.DeviceManager
$device = $deviceManager.DeviceInfos.Item(1).Connect()    

$wiaFormatPNG = "{B96B3CAF-0728-11D3-9D7B-0000F81EF32E}"
foreach ($item in $device.Items) { 
    $image = $item.Transfer($wiaFormatPNG) 
}    

if($image.FormatID -ne $wiaFormatPNG)
{
    $imageProcess = new-object -ComObject WIA.ImageProcess
    
    $imageProcess.Filters.Add($imageProcess.FilterInfos.Item("Convert").FilterID)
    $imageProcess.Filters.Item(1).Properties.Item("FormatID").Value = $wiaFormatPNG
    $image = $imageProcess.Apply($image)
}

$fname = ("{0:D03}_" -f $args[0]) + $args[1] + ".png"
$image.SaveFile("$(pwd)/$fname")