GdPicture.NET.14~GdPicture14.GdPictureOCR~GetWordTop - GetWordTop Method (GdPictureOCR) -

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Function GetWordTop( _
   ByVal OCRResultID As String, _
   ByVal WordIdx As Integer _
) As Integer

public int GetWordTop( 
   string OCRResultID,
   int WordIdx
)

public function GetWordTop( 
    OCRResultID: String;
    WordIdx: Integer
): Integer;

public function GetWordTop( 
   OCRResultID : String,
   WordIdx : int
) : int;

public: int GetWordTop( 
   string* OCRResultID,
   int WordIdx
)

public:
int GetWordTop( 
   String^ OCRResultID,
   int WordIdx
)

Parameters

OCRResultID: The unique result identifier of the executed OCR process obtained by the GdPictureOCR.RunOCR method.
WordIdx: The 0-based index of the word within the specified OCR result. It must be a value between 0 and GdPictureOCR.GetWordCount(OCRResultID) - 1.

Return Value

The top y-coordinate of the word's bounding box, in pixels.

Please always use the GdPictureOCR.GetStat method to determine if this method has been successful.

It is recommend to use the GdPictureOCR.GetStat method to identify the specific reason for the method's failure, if any.

Please note, that the origin of the used coordinate system is in the top-left corner of the processed image and the used units are pixels.

How to get the position of recognized words within the OCR result.

VB.NET
C#

Dim caption As String = "Example: GetWordTop"
Dim gdpictureOCR As GdPictureOCR = New GdPictureOCR
Dim gdpicturePDF As GdPicturePDF = New GdPicturePDF
'Load the PDF document.
If gdpicturePDF.LoadFromFile("input.pdf", False) = GdPictureStatus.OK Then
    'Select the first page.
    gdpicturePDF.SelectPage(1)
    'Render this page to a 200 DPI image.
    Dim image As Integer = gdpicturePDF.RenderPageToGdPictureImage(200, True)
    If gdpicturePDF.GetStat = GdPictureStatus.OK AndAlso
       gdpictureOCR.SetImage(image) = GdPictureStatus.OK Then
        'Setting up the image is mandatory.
        'Set up the OCR parameters.
        gdpictureOCR.ResourcesFolder = "C:\Path\To\GdPicture.NET 14\Redist\OCR"
        gdpictureOCR.AddLanguage(OCRLanguage.English)
        gdpictureOCR.OCRMode = OCRMode.FavorAccuracy
        'Set up the OCR context and the character list.
        gdpictureOCR.Context = OCRContext.OCRContextSingleLine
        gdpictureOCR.CharacterSet = "0123456789"
        'Set up the area to be processed by the OCR.
        gdpictureOCR.SetROI(100, 100, 200, 50)
        'Run the OCR process to recognize the phone number.
        Dim resID As String = gdpictureOCR.RunOCR()
        If gdpictureOCR.GetStat = GdPictureStatus.OK Then
            Dim wordCount As Integer = gdpictureOCR.GetWordCount(resID)
            If gdpictureOCR.GetStat = GdPictureStatus.OK Then
                Dim left As Integer = gdpictureOCR.GetWordLeft(resID, 0)
                Dim top As Integer = gdpictureOCR.GetWordTop(resID, 0)
                If gdpicturePDF.DrawRectangle(left, top,
                                               gdpictureOCR.GetWordRight(resID, wordCount - 1) - left,
                                               gdpictureOCR.GetWordBottom(resID, wordCount - 1) - top,
                                               False, True) = GdPictureStatus.OK Then
                    MessageBox.Show("The recognized phone number area has been successfully drawn.", caption)
                End If
                'Save the page with drawn recognized phone number to the New PDF document.
                If gdpicturePDF.SaveToFile("output.pdf") = GdPictureStatus.OK Then
                    MessageBox.Show("Done!", caption)
                Else
                    MessageBox.Show("The file can't be saved. Status: " + gdpicturePDF.GetStat().ToString(), caption)
                End If
            Else
                MessageBox.Show("The GetWordCount() method has failed with the status: " + gdpictureOCR.GetStat().ToString(), caption)
            End If
        Else
            MessageBox.Show("The error occurred when running the OCR. Status: " + gdpictureOCR.GetStat().ToString(), caption)
        End If
        'Release the image.
        GdPictureDocumentUtilities.DisposeImage(image)
    Else
        MessageBox.Show("The error occurred when creating or setting up the image. Status: " + gdpicturePDF.GetStat().ToString() + "/" + gdpictureOCR.GetStat().ToString(), caption)
    End If
    'Close the document.
    gdpicturePDF.CloseDocument()
Else
    MessageBox.Show("The file can't be loaded. Status: " + gdpicturePDF.GetStat().ToString(), caption)
End If
'Release resources.
gdpictureOCR.ReleaseOCRResults()
gdpictureOCR.Dispose()
gdpicturePDF.Dispose()

string caption = "Example: GetWordTop";
GdPictureOCR gdpictureOCR = new GdPictureOCR();
GdPicturePDF gdpicturePDF = new GdPicturePDF();
//Load the PDF document.
if (gdpicturePDF.LoadFromFile("input.pdf", false) == GdPictureStatus.OK)
{
    //Select the first page.
    gdpicturePDF.SelectPage(1);
    //Render this page to a 200 DPI image.
    int image = gdpicturePDF.RenderPageToGdPictureImage(200, true);
    if ((gdpicturePDF.GetStat() == GdPictureStatus.OK) &&
        (gdpictureOCR.SetImage(image) == GdPictureStatus.OK)) //Setting up the image is mandatory.
    {
        //Set up the OCR parameters.
        gdpictureOCR.ResourcesFolder = "C:\\Path\\To\\GdPicture.NET 14\\Redist\\OCR";
        gdpictureOCR.AddLanguage(OCRLanguage.English);
        gdpictureOCR.OCRMode = OCRMode.FavorAccuracy;
        //Set up the OCR context and the character list.
        gdpictureOCR.Context = OCRContext.OCRContextSingleLine;
        gdpictureOCR.CharacterSet = "0123456789";
        //Set up the area to be processed by the OCR.
        gdpictureOCR.SetROI(100, 100, 200, 50);
        //Run the OCR process to recognize the phone number.
        string resID = gdpictureOCR.RunOCR();
        if (gdpictureOCR.GetStat() == GdPictureStatus.OK)
        {
            int wordCount = gdpictureOCR.GetWordCount(resID);
            if (gdpictureOCR.GetStat() == GdPictureStatus.OK)
            {
                int left = gdpictureOCR.GetWordLeft(resID, 0);
                int top = gdpictureOCR.GetWordTop(resID, 0);
                if (gdpicturePDF.DrawRectangle(left, top,
                                                gdpictureOCR.GetWordRight(resID, wordCount - 1) - left,
                                                gdpictureOCR.GetWordBottom(resID, wordCount - 1) - top,
                                                false, true) == GdPictureStatus.OK)
                    MessageBox.Show("The recognized phone number area has been successfully drawn.", caption);
                //Save the page with drawn recognized phone number to the new PDF document.
                if (gdpicturePDF.SaveToFile("output.pdf") == GdPictureStatus.OK)
                    MessageBox.Show("Done!", caption);
                else
                    MessageBox.Show("The file can't be saved. Status: " + gdpicturePDF.GetStat().ToString(), caption);
            }
            else
                MessageBox.Show("The GetWordCount() method has failed with the status: " + gdpictureOCR.GetStat().ToString());
        }
        else
            MessageBox.Show("The error occurred when running the OCR. Status: " + gdpictureOCR.GetStat().ToString(), caption);
        //Release the image.
        GdPictureDocumentUtilities.DisposeImage(image);
    }
    else
        MessageBox.Show("The error occurred when creating or setting up the image. Status: " + gdpicturePDF.GetStat().ToString() + "/" + gdpictureOCR.GetStat().ToString(), caption);
    //Close the document.
    gdpicturePDF.CloseDocument();
}
else
    MessageBox.Show("The file can't be loaded. Status: " + gdpicturePDF.GetStat().ToString(), caption);
//Release resources.
gdpictureOCR.ReleaseOCRResults();
gdpictureOCR.Dispose();
gdpicturePDF.Dispose();

How to get the position of recognized words within the OCR result. Dim caption As String = "Example: GetWordTop" Dim gdpictureOCR As GdPictureOCR = New GdPictureOCR Dim gdpicturePDF As GdPicturePDF = New GdPicturePDF 'Load the PDF document. If gdpicturePDF.LoadFromFile("input.pdf", False) = GdPictureStatus.OK Then 'Select the first page. gdpicturePDF.SelectPage(1) 'Render this page to a 200 DPI image. Dim image As Integer = gdpicturePDF.RenderPageToGdPictureImage(200, True) If gdpicturePDF.GetStat = GdPictureStatus.OK AndAlso gdpictureOCR.SetImage(image) = GdPictureStatus.OK Then 'Setting up the image is mandatory. 'Set up the OCR parameters. gdpictureOCR.ResourcesFolder = "C:\Path\To\GdPicture.NET 14\Redist\OCR" gdpictureOCR.AddLanguage(OCRLanguage.English) gdpictureOCR.OCRMode = OCRMode.FavorAccuracy 'Set up the OCR context and the character list. gdpictureOCR.Context = OCRContext.OCRContextSingleLine gdpictureOCR.CharacterSet = "0123456789" 'Set up the area to be processed by the OCR. gdpictureOCR.SetROI(100, 100, 200, 50) 'Run the OCR process to recognize the phone number. Dim resID As String = gdpictureOCR.RunOCR() If gdpictureOCR.GetStat = GdPictureStatus.OK Then Dim wordCount As Integer = gdpictureOCR.GetWordCount(resID) If gdpictureOCR.GetStat = GdPictureStatus.OK Then Dim left As Integer = gdpictureOCR.GetWordLeft(resID, 0) Dim top As Integer = gdpictureOCR.GetWordTop(resID, 0) If gdpicturePDF.DrawRectangle(left, top, gdpictureOCR.GetWordRight(resID, wordCount - 1) - left, gdpictureOCR.GetWordBottom(resID, wordCount - 1) - top, False, True) = GdPictureStatus.OK Then MessageBox.Show("The recognized phone number area has been successfully drawn.", caption) End If 'Save the page with drawn recognized phone number to the New PDF document. If gdpicturePDF.SaveToFile("output.pdf") = GdPictureStatus.OK Then MessageBox.Show("Done!", caption) Else MessageBox.Show("The file can't be saved. Status: " + gdpicturePDF.GetStat().ToString(), caption) End If Else MessageBox.Show("The GetWordCount() method has failed with the status: " + gdpictureOCR.GetStat().ToString(), caption) End If Else MessageBox.Show("The error occurred when running the OCR. Status: " + gdpictureOCR.GetStat().ToString(), caption) End If 'Release the image. GdPictureDocumentUtilities.DisposeImage(image) Else MessageBox.Show("The error occurred when creating or setting up the image. Status: " + gdpicturePDF.GetStat().ToString() + "/" + gdpictureOCR.GetStat().ToString(), caption) End If 'Close the document. gdpicturePDF.CloseDocument() Else MessageBox.Show("The file can't be loaded. Status: " + gdpicturePDF.GetStat().ToString(), caption) End If 'Release resources. gdpictureOCR.ReleaseOCRResults() gdpictureOCR.Dispose() gdpicturePDF.Dispose() string caption = "Example: GetWordTop"; GdPictureOCR gdpictureOCR = new GdPictureOCR(); GdPicturePDF gdpicturePDF = new GdPicturePDF(); //Load the PDF document. if (gdpicturePDF.LoadFromFile("input.pdf", false) == GdPictureStatus.OK) { //Select the first page. gdpicturePDF.SelectPage(1); //Render this page to a 200 DPI image. int image = gdpicturePDF.RenderPageToGdPictureImage(200, true); if ((gdpicturePDF.GetStat() == GdPictureStatus.OK) && (gdpictureOCR.SetImage(image) == GdPictureStatus.OK)) //Setting up the image is mandatory. { //Set up the OCR parameters. gdpictureOCR.ResourcesFolder = "C:\\Path\\To\\GdPicture.NET 14\\Redist\\OCR"; gdpictureOCR.AddLanguage(OCRLanguage.English); gdpictureOCR.OCRMode = OCRMode.FavorAccuracy; //Set up the OCR context and the character list. gdpictureOCR.Context = OCRContext.OCRContextSingleLine; gdpictureOCR.CharacterSet = "0123456789"; //Set up the area to be processed by the OCR. gdpictureOCR.SetROI(100, 100, 200, 50); //Run the OCR process to recognize the phone number. string resID = gdpictureOCR.RunOCR(); if (gdpictureOCR.GetStat() == GdPictureStatus.OK) { int wordCount = gdpictureOCR.GetWordCount(resID); if (gdpictureOCR.GetStat() == GdPictureStatus.OK) { int left = gdpictureOCR.GetWordLeft(resID, 0); int top = gdpictureOCR.GetWordTop(resID, 0); if (gdpicturePDF.DrawRectangle(left, top, gdpictureOCR.GetWordRight(resID, wordCount - 1) - left, gdpictureOCR.GetWordBottom(resID, wordCount - 1) - top, false, true) == GdPictureStatus.OK) MessageBox.Show("The recognized phone number area has been successfully drawn.", caption); //Save the page with drawn recognized phone number to the new PDF document. if (gdpicturePDF.SaveToFile("output.pdf") == GdPictureStatus.OK) MessageBox.Show("Done!", caption); else MessageBox.Show("The file can't be saved. Status: " + gdpicturePDF.GetStat().ToString(), caption); } else MessageBox.Show("The GetWordCount() method has failed with the status: " + gdpictureOCR.GetStat().ToString()); } else MessageBox.Show("The error occurred when running the OCR. Status: " + gdpictureOCR.GetStat().ToString(), caption); //Release the image. GdPictureDocumentUtilities.DisposeImage(image); } else MessageBox.Show("The error occurred when creating or setting up the image. Status: " + gdpicturePDF.GetStat().ToString() + "/" + gdpictureOCR.GetStat().ToString(), caption); //Close the document. gdpicturePDF.CloseDocument(); } else MessageBox.Show("The file can't be loaded. Status: " + gdpicturePDF.GetStat().ToString(), caption); //Release resources. gdpictureOCR.ReleaseOCRResults(); gdpictureOCR.Dispose(); gdpicturePDF.Dispose();

Reference

GdPictureOCR Class
GdPictureOCR Members
RunOCR Method
GetWordCount Method
GetStat Method
GetStat Method
GetWordCount Method
GetWordBottom Method
GetWordLeft Method
GetWordRight Method
RunOCR Method