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Update mask-rescaler.ps1
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‎mask-rescaler.ps1‎

Lines changed: 108 additions & 98 deletions
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# Mask Rescaler
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# =============
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#
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# If the PDF image extractor has given you masks that don't match the image dimensions, this script can help. First, make sure to remove ALL files from the
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# directory that aren't the mismatched images/masks. Also remove any unwanted images; the images must be in the 'image, mask, image, mask, ...' order that
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# the extractor requires.
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# If the PDF image extractor has given you masks that don't match the image dimensions, this script can help.
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#
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# Place this script in the same directory as the images/masks. If on Windows, right-click and select 'Run with PowerShell'. If on macOS/Linux, you'll
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# probably have to install PowerShell and run this script via command line.
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# First, make sure to remove ALL files from the directory that aren't the mismatched images/masks. Also remove
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# any unwanted images; the images must be in the 'image, mask, image, mask, ...' order that the extractor
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# requires. Place this script in the same directory as the images/masks. Run the script.
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#
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# Rescaled masks have `_resized` appended to their name, and all old masks are moved to a new directory surprisingly called `old_masks`.
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# Rescaled masks have `_resized` appended to their name, and all old masks are moved to a new directory
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# surprisingly called `old_masks`. Images are unaffected.
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#
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# If you still don't understand what this script does, I recommend not using it.
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#
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#
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# Spappz 2022
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# Spappz 2024
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#
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# MIT License
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2020
Add-Type -Assembly System.Drawing
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# Resize-Image function (copied 2022-01-20) by Christopher Walker at https://gist.github.com/someshinyobject/617bf00556bc43af87cd
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# Resize-Image function by Christopher Walker at https://gist.github.com/someshinyobject/617bf00556bc43af87cd
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# Copied 2022-01-20
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Function Resize-Image {
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[CmdLetBinding(
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SupportsShouldProcess=$true,
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PositionalBinding=$false,
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ConfirmImpact="Medium",
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DefaultParameterSetName="Absolute"
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)]
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Param (
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[Parameter(Mandatory=$True)]
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[ValidateScript({
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$_ | ForEach-Object {
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Test-Path $_
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}
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})][String[]]$ImagePath,
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[Parameter(Mandatory=$False)][Switch]$MaintainRatio,
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[Parameter(Mandatory=$False, ParameterSetName="Absolute")][Int]$Height,
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[Parameter(Mandatory=$False, ParameterSetName="Absolute")][Int]$Width,
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[Parameter(Mandatory=$False, ParameterSetName="Percent")][Double]$Percentage,
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[Parameter(Mandatory=$False)][System.Drawing.Drawing2D.SmoothingMode]$SmoothingMode = "HighQuality",
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[Parameter(Mandatory=$False)][System.Drawing.Drawing2D.InterpolationMode]$InterpolationMode = "HighQualityBicubic",
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[Parameter(Mandatory=$False)][System.Drawing.Drawing2D.PixelOffsetMode]$PixelOffsetMode = "HighQuality",
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[Parameter(Mandatory=$False)][String]$NameModifier = "resized"
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)
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Begin {
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If ($Width -and $Height -and $MaintainRatio) {
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Throw "Absolute Width and Height cannot be given with the MaintainRatio parameter."
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}
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If (($Width -xor $Height) -and (-not $MaintainRatio)) {
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Throw "MaintainRatio must be set with incomplete size parameters (Missing height or width without MaintainRatio)"
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}
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If ($Percentage -and $MaintainRatio) {
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Write-Warning "The MaintainRatio flag while using the Percentage parameter does nothing"
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}
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}
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Process {
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ForEach ($Image in $ImagePath) {
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$Path = (Resolve-Path $Image).Path
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$Dot = $Path.LastIndexOf(".")
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[CmdLetBinding(
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SupportsShouldProcess = $true,
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PositionalBinding = $false,
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ConfirmImpact = 'Medium',
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DefaultParameterSetName = 'Absolute'
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)]
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Param (
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[Parameter(Mandatory = $True)]
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[ValidateScript({
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$_ | ForEach-Object {
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Test-Path $_
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}
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})][String[]]$ImagePath,
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[Parameter(Mandatory = $False)][Switch]$MaintainRatio,
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[Parameter(Mandatory = $False, ParameterSetName = 'Absolute')][Int]$Height,
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[Parameter(Mandatory = $False, ParameterSetName = 'Absolute')][Int]$Width,
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[Parameter(Mandatory = $False, ParameterSetName = 'Percent')][Double]$Percentage,
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[Parameter(Mandatory = $False)][System.Drawing.Drawing2D.SmoothingMode]$SmoothingMode = 'HighQuality',
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[Parameter(Mandatory = $False)][System.Drawing.Drawing2D.InterpolationMode]$InterpolationMode = 'HighQualityBicubic',
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[Parameter(Mandatory = $False)][System.Drawing.Drawing2D.PixelOffsetMode]$PixelOffsetMode = 'HighQuality',
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[Parameter(Mandatory = $False)][String]$NameModifier = 'resized'
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)
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Begin {
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If ($Width -and $Height -and $MaintainRatio) {
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Throw 'Absolute Width and Height cannot be given with the MaintainRatio parameter.'
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}
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#Add name modifier (OriginalName_{$NameModifier}.jpg)
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$OutputPath = $Path.Substring(0,$Dot) + "_" + $NameModifier + $Path.Substring($Dot,$Path.Length - $Dot)
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$OldImage = New-Object -TypeName System.Drawing.Bitmap -ArgumentList $Path
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# Grab these for use in calculations below.
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$OldHeight = $OldImage.Height
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$OldWidth = $OldImage.Width
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If ($MaintainRatio) {
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$OldHeight = $OldImage.Height
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$OldWidth = $OldImage.Width
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If ($Height) {
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$Width = $OldWidth / $OldHeight * $Height
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}
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If ($Width) {
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$Height = $OldHeight / $OldWidth * $Width
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}
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}
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If ($Percentage) {
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$Product = ($Percentage / 100)
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$Height = $OldHeight * $Product
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$Width = $OldWidth * $Product
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}
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If (($Width -xor $Height) -and (-not $MaintainRatio)) {
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Throw 'MaintainRatio must be set with incomplete size parameters (Missing height or width without MaintainRatio)'
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}
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$Bitmap = New-Object -TypeName System.Drawing.Bitmap -ArgumentList $Width, $Height
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$NewImage = [System.Drawing.Graphics]::FromImage($Bitmap)
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#Retrieving the best quality possible
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$NewImage.SmoothingMode = $SmoothingMode
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$NewImage.InterpolationMode = $InterpolationMode
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$NewImage.PixelOffsetMode = $PixelOffsetMode
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$NewImage.DrawImage($OldImage, $(New-Object -TypeName System.Drawing.Rectangle -ArgumentList 0, 0, $Width, $Height))
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If ($Percentage -and $MaintainRatio) {
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Write-Warning 'The MaintainRatio flag while using the Percentage parameter does nothing'
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}
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}
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Process {
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ForEach ($Image in $ImagePath) {
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$Path = (Resolve-Path $Image).Path
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$Dot = $Path.LastIndexOf('.')
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98-
If ($PSCmdlet.ShouldProcess("Resized image based on $Path", "save to $OutputPath")) {
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$Bitmap.Save($OutputPath)
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}
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$Bitmap.Dispose()
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$NewImage.Dispose()
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$OldImage.Dispose()
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}
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}
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#Add name modifier (OriginalName_{$NameModifier}.jpg)
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$OutputPath = $Path.Substring(0, $Dot) + '_' + $NameModifier + $Path.Substring($Dot, $Path.Length - $Dot)
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$OldImage = New-Object -TypeName System.Drawing.Bitmap -ArgumentList $Path
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# Grab these for use in calculations below.
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$OldHeight = $OldImage.Height
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$OldWidth = $OldImage.Width
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If ($MaintainRatio) {
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$OldHeight = $OldImage.Height
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$OldWidth = $OldImage.Width
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If ($Height) {
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$Width = $OldWidth / $OldHeight * $Height
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}
79+
If ($Width) {
80+
$Height = $OldHeight / $OldWidth * $Width
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}
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}
83+
84+
If ($Percentage) {
85+
$Product = ($Percentage / 100)
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$Height = $OldHeight * $Product
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$Width = $OldWidth * $Product
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}
89+
90+
$Bitmap = New-Object -TypeName System.Drawing.Bitmap -ArgumentList $Width, $Height
91+
$NewImage = [System.Drawing.Graphics]::FromImage($Bitmap)
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#Retrieving the best quality possible
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$NewImage.SmoothingMode = $SmoothingMode
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$NewImage.InterpolationMode = $InterpolationMode
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$NewImage.PixelOffsetMode = $PixelOffsetMode
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$NewImage.DrawImage($OldImage, $(New-Object -TypeName System.Drawing.Rectangle -ArgumentList 0, 0, $Width, $Height))
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If ($PSCmdlet.ShouldProcess("Resized image based on $Path", "save to $OutputPath")) {
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$Bitmap.Save($OutputPath)
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}
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$Bitmap.Dispose()
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$NewImage.Dispose()
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$OldImage.Dispose()
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}
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}
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}
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# Grab paths to all the files in the directory
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$imageList = Get-ChildItem | Where-Object {$_.Name -match '\.png$'} | Select-Object -ExpandProperty Name | Resolve-Path | Select-Object -ExpandProperty Path
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$imageList = Get-ChildItem |
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Where-Object { $_.Name -match '\.png$' } |
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Select-Object -ExpandProperty Name |
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Resolve-Path |
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Select-Object -ExpandProperty Path
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# Assume the order is image, mask, image, mask
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$resizedMasks = [System.Collections.Generic.List[string]]::new()
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for ($i = 0; $i -lt $imageList.Count; $i = $i + 2) {
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# Read image for reference
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$image = New-Object -TypeName System.Drawing.Bitmap -ArgumentList $imageList[$i]
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# Rescale and save mask based on the image's dimensions
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Resize-Image -Width $image.Width -Height $image.Height -ImagePath $imageList[$i + 1]
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# Read image for reference
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$image = New-Object -TypeName System.Drawing.Bitmap -ArgumentList $imageList[$i]
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$mask = New-Object -TypeName System.Drawing.Bitmap -ArgumentList $imageList[$i + 1]
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# Rescale and save mask based on the image's dimensions
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if ($image.Width -ne $mask.Width -or $image.Height -ne $mask.Height) {
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$resizedMasks.Add($imageList[$i + 1].Name)
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Resize-Image -Width $image.Width -Height $image.Height -ImagePath $imageList[$i + 1]
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}
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}
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# Move old masks into an `old_masks` directory as clean-up
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$imageListNew = Get-ChildItem | Where-Object {$_.Name -match '\.png$'} | Select-Object -ExpandProperty Name
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$null = New-Item -ItemType Directory -Name old_masks
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for ($i = 1; $i -lt $imageListNew.Count; $i = $i + 3) {
124-
Move-Item -Path $imageListNew[$i] -Destination old_masks
125-
}
131+
$null = New-Item -ItemType Directory -Name ../old_masks
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$resizedMasks |
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ForEach-Object { $_ -replace '_resized(?=\.png$)' } |
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Move-Item -Destination ../old_masks
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