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2025-12-02 18:18:14 +00:00
parent 524dd2432b
commit 1055b7dd73
5 changed files with 505 additions and 0 deletions
--- a/Get-Win10OcrTextFromImage.ps1
+++ b/Get-Win10OcrTextFromImage.ps1
@@ -0,0 +1,91 @@
+function Get-OCR {
+    <# 
+    .SYNOPSIS 
+  Runs Windows 10 OCR on an image.
+  .DESCRIPTION 
+  Takes a path to an image file, with some text on it. 
+  Runs Windows 10 OCR against the image. 
+  Returns an [OcrResult], hopefully with a .Text property containing the text 
+  .PARAMETER -Path 
+  Path to an image file 
+  .EXAMPLE 
+  Get-OCR -Path 'c:\test.bmp' 
+  #>
+    [CmdletBinding()]
+    param (
+        [Parameter(Mandatory = $true, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true, Position = 0, HelpMessage = 'Path to an image file, to run OCR on')]
+        [ValidateNotNullOrEmpty()]
+        $Path
+    )
+
+    Begin {
+        # Add the WinRT assembly, and load the appropriate WinRT types
+        Add-Type -AssemblyName System.Runtime.WindowsRuntime
+        $null = [Windows.Storage.StorageFile, Windows.Storage, ContentType = WindowsRuntime]
+        $null = [Windows.Media.Ocr.OcrEngine, Windows.Foundation, ContentType = WindowsRuntime]
+        $null = [Windows.Foundation.IAsyncOperation, Windows.Foundation, ContentType = WindowsRuntime]
+        $null = [Windows.Graphics.Imaging.SoftwareBitmap, Windows.Foundation, ContentType = WindowsRuntime]
+        $null = [Windows.Storage.Streams.RandomAccessStream, Windows.Storage.Streams, ContentType = WindowsRuntime]
+
+                                                                     
+        $ocrEngine = [Windows.Media.Ocr.OcrEngine]::TryCreateFromUserProfileLanguages()
+
+                                                                        
+                                              
+                                                                                      
+        $getAwaiterBaseMethod = [WindowsRuntimeSystemExtensions].GetMember('GetAwaiter').Where({ $PSItem.GetParameters()[0].ParameterType.Name -eq 'IAsyncOperation`'IAsyncOperation`1'' }, ''First')[0]'
+        Function Await {
+            param($AsyncTask, $ResultType)
+            $getAwaiterBaseMethod.MakeGenericMethod($ResultType).Invoke($null, @($AsyncTask)).GetResult()
+        }
+    }
+
+    Process {
+        foreach ($p in $Path) {
+            # .Net method needs a full path, or at least might not have the same relative path root as PowerShell
+            $p = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($p)
+
+            $params = @{
+                AsyncTask = [Windows.Storage.StorageFile]::GetFileFromPathAsync($p)
+                ResultType = [Windows.Storage.StorageFile]
+            }
+            $storageFile = Await @params
+
+            $params = @{
+                AsyncTask = $storageFile.OpenAsync([Windows.Storage.FileAccessMode]::Read)
+                ResultType = [Windows.Storage.Streams.IRandomAccessStream]
+            }
+            $fileStream = Await @params
+
+            $params = @{
+                AsyncTask = [Windows.Graphics.Imaging.BitmapDecoder]::CreateAsync($fileStream)
+                ResultType = [Windows.Graphics.Imaging.BitmapDecoder]
+            }
+            $bitmapDecoder = Await @params
+
+            $params = @{
+                AsyncTask = $bitmapDecoder.GetSoftwareBitmapAsync()
+                ResultType = [Windows.Graphics.Imaging.SoftwareBitmap]
+            }
+            $softwareBitmap = Await @params
+
+            # Run the OCR
+            $ocrResult = Await $ocrEngine.RecognizeAsync($softwareBitmap) ([Windows.Media.Ocr.OcrResult])
+
+            <# **CHANGED: Extract text and coordinates** #>
+            $ocrResult.Lines | ForEach-Object {
+                $_.Words | ForEach-Object {
+                    [PSCustomObject]@{
+                        Text = $_.Text
+                        X = $_.BoundingRect.X
+                        Y = $_.BoundingRect.Y
+                        Width = $_.BoundingRect.Width
+                        Height = $_.BoundingRect.Height
+                    }
+                }
+            }
+        }
+    }
+}
+
+Get-OCR "C:\LDPLayer\LDPlayer9\screenshot.png"