Search the Community

first of all i would like to thank @Danyfirex for this wonderful UWPOCR UDF that he offers us I noticed that when you perform OCR from a small area of the screen, it doesn't recognize it normally and can't read from it. and so I proceeded to these functions. Which work as I expected, However, I have no experience with GDIPlus. I post them, to share it with the community, and to get some hint, advice. In the example below I'm targeting the date on the bottom right of the taskbar, I have a 1920*1080 screen and 100% scale ; https://www.autoitscript.com/forum/topic/211521-ocr-from-a-small-area/?do=findComment&comment=1530475 #AutoIt3Wrapper_Run_Debug_Mode=Y #include <GDIPlus.au3> #include <GUIConstantsEx.au3> #include <ScreenCapture.au3> #include <WindowsConstants.au3> #include "UWPOCR.au3" ; * <-"https://www.autoitscript.com/forum/topic/207324-uwpocr-windows-platform-optical-character-recognition-api-implementation" _Example() ;-------------------------------------------------------------------------------------------------------------------------------- Func _Example() Local $sImageResult, $sOCRTextResult ; 1) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ; From my monitor capture the date of the tskbar = 1808, 1062, 1862, 1074 $sImageResult = _ScreenCapture(@ScriptDir & "\tmp_OCR_image.png", 1808, 1062, 1862, 1074) ConsoleWrite("$sImageResult=" & $sImageResult & @CRLF) ; reading text from $sImageResult $sOCRTextResult = _UWPOCR_GetText($sImageResult) ConsoleWrite("- 1) OCR Result=" & $sOCRTextResult & @CRLF) ShellExecuteWait($sImageResult) ; 2) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ; capture the date and give a border with 20 pixels = 1808, 1062, 1862, 1074, 0, 20 $sImageResult = _ScreenCapture(@ScriptDir & "\tmp_OCR_image.png", 1808, 1062, 1862, 1074, 0, 20) ; reading text from $sImageResult $sOCRTextResult = _UWPOCR_GetText($sImageResult) ConsoleWrite("- 2) OCR Result=" & $sOCRTextResult & @CRLF) ShellExecuteWait($sImageResult) ; 3) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ; capture the date, give a border with 20 pixels, and invert colors = 1808, 1062, 1862, 1074, 1, 20 $sImageResult = _ScreenCapture(@ScriptDir & "\tmp_OCR_image.png", 1808, 1062, 1862, 1074, 1, 20) ; reading text from $sImageResult $sOCRTextResult = _UWPOCR_GetText($sImageResult) ConsoleWrite("- 3) OCR Result=" & $sOCRTextResult & @CRLF) ShellExecuteWait($sImageResult) ; 4) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ; and the same from memory ConsoleWrite("Delete tmp_OCR_image=" & FileDelete($sImageResult) & @CRLF) $sOCRTextResult = _GetText(1808, 1062, 1862, 1074, 1, 20) ConsoleWrite("- 4) OCR Result=" & $sOCRTextResult & @CRLF) EndFunc ;==>_Example ; #FUNCTION# -------------------------------------------------------------------------------------------------------------------- ; Name...........: _ScreenCapture ; Description ...: Captures a region of the screen ; Syntax.........: _ScreenCapture($sFileName [, $iLeft = 0 [, $iTop = 0 [, $iRight = -1 [, $iBottom = -1 [, $iNegative = 0 [, $iBorder = 0 [, $dScale = 1 [, $iBrightness = 0 [, $iContrast = 0]]]]]]]]]) ; Parameters ....: $sFileName Full path and extension of the image file ; $iLeft [optional] X coordinate of the upper left corner of the rectangle ; $iTop [optional] Y coordinate of the upper left corner of the rectangle ; $iRight [optional] X coordinate of the lower right corner of the rectangle. If this is -1, the current screen width will be used ; $iBottom [optional] Y coordinate of the lower right corner of the rectangle. If this is -1, the current screen height will be used. ; $iNegative [optional] 1 = Negative color, 0 = Normal color ; $iBorder [optional] Draw a border araunt, The color is taken from first pixel ; $dScale [optional] Scale factor ; $iBrightness [optional] Integer in the range -255 through 255 that specifies the brightness level. ; $iContrast [optional] Integer in the range -100 through 100 that specifies the contrast level. ; Return value...: Filepath of the image If the image is successfully saved. ; False If the image is Not successfully saved. ; ; Author ........: ; Notes .........: ;-------------------------------------------------------------------------------------------------------------------------------- Func _ScreenCapture($sFileName, $iLeft = 0, $iTop = 0, $iRight = -1, $iBottom = -1, $iNegative = 0, $iBorder = 0, $dScale = 1, $iBrightness = 0, $iContrast = 0) Local $hHBitmap, $hBitmap, $hGDIPlusBitmap, $hImage, $hImageCtxt, $vRet, $iBmpW, $iBmpH, $iBorderColor _GDIPlus_Startup() $hHBitmap = _ScreenCapture_Capture("", $iLeft, $iTop, $iRight, $iBottom, False) If @error Then Return SetError(1, 0, False) Local $tSIZE = _WinAPI_GetBitmapDimension($hHBitmap) $iBmpW = $dScale * DllStructGetData($tSIZE, 'X') $iBmpH = $dScale * DllStructGetData($tSIZE, 'Y') ;Default ;$iFlags=0,$iIlluminant=0,$iGammaR=10000,$iGammaG=10000,$iGammaB=10000,$iBlack=0,$iWhite=10000,$iContrast=0,$iBrightness=0,$iColorfulness=0,$iTint=0 Local $iIlluminant = 0, $iGammaR = 10000, $iGammaG = 10000, $iGammaB = 10000, $iBlack = 0, $iWhite = 10000, $iColorfulness = 0, $iTint = 0 Local $tAdj = 0 $tAdj = _WinAPI_CreateColorAdjustment($iNegative, $iIlluminant, $iGammaR, $iGammaG, $iGammaB, $iBlack, $iWhite, $iContrast, $iBrightness, $iColorfulness, $iTint) $hBitmap = _WinAPI_AdjustBitmap($hHBitmap, $iBmpW, $iBmpH, $HALFTONE, $tAdj) If @error Then Return SetError(2, 0, False) $hGDIPlusBitmap = _GDIPlus_BitmapCreateFromHBITMAP($hBitmap) ; Add Border If $iBorder > 0 Then $iBorderColor = _GDIPlus_BitmapGetPixel($hGDIPlusBitmap, 1, 1) ;get pixel color from 1,1 $hImage = _GDIPlus_BitmapCreateFromScan0($iBmpW + (2 * $iBorder), $iBmpH + (2 * $iBorder)) ;create an empty bitmap If @error Then Return SetError(3, 0, False) $hImageCtxt = _GDIPlus_ImageGetGraphicsContext($hImage) ;get the graphics context of the bitmap _GDIPlus_GraphicsSetSmoothingMode($hImageCtxt, $GDIP_SMOOTHINGMODE_HIGHQUALITY) _GDIPlus_GraphicsClear($hImageCtxt, $iBorderColor) ;clear bitmap with color white _GDIPlus_GraphicsDrawImage($hImageCtxt, $hGDIPlusBitmap, $iBorder, $iBorder) _GDIPlus_ImageDispose($hGDIPlusBitmap) Else $hImage = $hGDIPlusBitmap EndIf $vRet = _GDIPlus_ImageSaveToFile($hImage, $sFileName) ;save bitmap to disk If @error Then Return SetError(4, 0, False) If $vRet Then $vRet = $sFileName ; Cleanup resources _WinAPI_DeleteObject($hBitmap) _WinAPI_DeleteObject($hHBitmap) _GDIPlus_BitmapDispose($hImage) _GDIPlus_BitmapDispose($hGDIPlusBitmap) _GDIPlus_GraphicsDispose($hImageCtxt) _GDIPlus_Shutdown() Return $vRet EndFunc ;==>_ScreenCapture ; #FUNCTION# -------------------------------------------------------------------------------------------------------------------- ; Name...........: _GetText ; Description ...: reading text from a region of the screen ; Syntax.........: _GetText([$iLeft = 0 [, $iTop = 0 [, $iRight = -1 [, $iBottom = -1 [, $iNegative = 0 [, $iBorder = 0 [, $dScale = 1 [, $iBrightness = 0 [, $iContrast = 0 [, $sLanguageTagToUse = Default [, $bUseOcrLine = False]]]]]]]]]]]) ; Parameters ....: $iLeft [optional] X coordinate of the upper left corner of the rectangle ; $iTop [optional] Y coordinate of the upper left corner of the rectangle ; $iRight [optional] X coordinate of the lower right corner of the rectangle. If this is -1, the current screen width will be used ; $iBottom [optional] Y coordinate of the lower right corner of the rectangle. If this is -1, the current screen height will be used. ; $iNegative [optional] 1 = Negative color, 0 = Normal color ; $iBorder [optional] Draw a border araunt, The color is taken from first pixel ; $dScale [optional] Scale factor ; $iBrightness [optional] Integer in the range -255 through 255 that specifies the brightness level. ; $iContrast [optional] Integer in the range -100 through 100 that specifies the contrast level. ; $sLanguageTagToUse [optional] Gets the language being used for text recognition ; $bUseOcrLine [optional] Represents a single line of text recognized by the OCR engine and returned as part of the OcrResult. ; Return value...: Success: Contains the results of Optical Character Recognition (OCR). ; Failure: "" Empty String otherwise. ; On Error: false ; ; Author ........: ; Notes .........: ;-------------------------------------------------------------------------------------------------------------------------------- Func _GetText($iLeft = 0, $iTop = 0, $iRight = -1, $iBottom = -1, $iNegative = 0, $iBorder = 0, $dScale = 1, $iBrightness = 0, $iContrast = 0, $sLanguageTagToUse = Default, $bUseOcrLine = False) Local $hHBitmap, $hBitmap, $hGDIPlusBitmap, $hImage, $hImageCtxt, $sOCRTextResult, $iBmpW, $iBmpH, $iBorderColor _GDIPlus_Startup() $hHBitmap = _ScreenCapture_Capture("", $iLeft, $iTop, $iRight, $iBottom, False) If @error Then Return SetError(1, 0, False) Local $tSIZE = _WinAPI_GetBitmapDimension($hHBitmap) $iBmpW = $dScale * DllStructGetData($tSIZE, 'X') $iBmpH = $dScale * DllStructGetData($tSIZE, 'Y') ;Default ;$iFlags=0,$iIlluminant=0,$iGammaR=10000,$iGammaG=10000,$iGammaB=10000,$iBlack=0,$iWhite=10000,$iContrast=0,$iBrightness=0,$iColorfulness=0,$iTint=0 Local $iIlluminant = 0, $iGammaR = 10000, $iGammaG = 10000, $iGammaB = 10000, $iBlack = 0, $iWhite = 10000, $iColorfulness = 0, $iTint = 0 Local $tAdj = 0 $tAdj = _WinAPI_CreateColorAdjustment($iNegative, $iIlluminant, $iGammaR, $iGammaG, $iGammaB, $iBlack, $iWhite, $iContrast, $iBrightness, $iColorfulness, $iTint) $hBitmap = _WinAPI_AdjustBitmap($hHBitmap, $iBmpW, $iBmpH, $HALFTONE, $tAdj) If @error Then Return SetError(2, 0, False) $hGDIPlusBitmap = _GDIPlus_BitmapCreateFromHBITMAP($hBitmap) ; Add Border If $iBorder > 0 Then $iBorderColor = _GDIPlus_BitmapGetPixel($hGDIPlusBitmap, 1, 1) ;get pixel color from 1,1 $hImage = _GDIPlus_BitmapCreateFromScan0($iBmpW + (2 * $iBorder), $iBmpH + (2 * $iBorder)) ;create an empty bitmap If @error Then Return SetError(3, 0, False) $hImageCtxt = _GDIPlus_ImageGetGraphicsContext($hImage) ;get the graphics context of the bitmap _GDIPlus_GraphicsSetSmoothingMode($hImageCtxt, $GDIP_SMOOTHINGMODE_HIGHQUALITY) _GDIPlus_GraphicsClear($hImageCtxt, $iBorderColor) ;clear bitmap with color white _GDIPlus_GraphicsDrawImage($hImageCtxt, $hGDIPlusBitmap, $iBorder, $iBorder) _GDIPlus_ImageDispose($hGDIPlusBitmap) Else $hImage = $hGDIPlusBitmap EndIf $sOCRTextResult = _UWPOCR_GetText($hImage, $sLanguageTagToUse, $bUseOcrLine) If @error Then Return SetError(4, 0, False) ; Cleanup resources _WinAPI_DeleteObject($hBitmap) _WinAPI_DeleteObject($hHBitmap) _GDIPlus_BitmapDispose($hImage) _GDIPlus_BitmapDispose($hGDIPlusBitmap) _GDIPlus_GraphicsDispose($hImageCtxt) _GDIPlus_Shutdown() Return $sOCRTextResult EndFunc ;==>_GetText ;-------------------------------------------------------------------------------------------------------------------------------- Thank you very much