The unique result identifier of the executed OCR process obtained by the RunOCR method.
Example





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GdPicture14 Namespace / GdPictureOCR Class / GetKeyValuePairCount Method

GetKeyValuePairCount Method (GdPictureOCR)

In This Topic
Returns the number of extracted key-value pairs within a specified OCR result. Key-value pairs extraction is automatically performed during each OCR process.
Syntax
'Declaration

 


Public Function GetKeyValuePairCount( _

   ByVal OCRResultID As String _

) As Integer
public int GetKeyValuePairCount( 

   string OCRResultID

)
public function GetKeyValuePairCount( 

    OCRResultID: String

): Integer; 
public function GetKeyValuePairCount( 

   OCRResultID : String

) : int;
public: int GetKeyValuePairCount( 

   string* OCRResultID

) 
public:

int GetKeyValuePairCount( 

   String^ OCRResultID

)

Parameters

OCRResultID
The unique result identifier of the executed OCR process obtained by the RunOCR method.

Return Value

The number of detected key-value pairs.
Remarks

This method requires the KVP and Table Processing - Intelligent Redaction component to run.

Example
Extracting key-value pairs from an image. 
string caption = "Example: KVP/OCR";

using (GdPictureOCR gdpictureOCR = new GdPictureOCR())

{

    //Set up your prefered parameters for OCR.

    gdpictureOCR.ResourcesFolder = "\\GdPicture.Net 14\\redist\\OCR";

    gdpictureOCR.EnableSkewDetection = true;

    if (gdpictureOCR.AddLanguage(OCRLanguage.English) == GdPictureStatus.OK)

    {

        //Set up the image you want to process.

        GdPictureImaging gdpictureImaging = new GdPictureImaging();

        //The standard open file dialog displays to allow you to select the file.

        int image = gdpictureImaging.CreateGdPictureImageFromFile("");

 

         gdpictureOCR.SetImage(image);

 

         string ocrResultID = gdpictureOCR.RunOCR();

 

         if (gdpictureOCR.GetStat() == GdPictureStatus.OK)

         {

             string keyValuePairsData = "";

 

             for (int pairIdx = 0; pairIdx < gdpictureOCR.GetKeyValuePairCount(ocrResultID); pairIdx++)

             {

                 if (pairIdx != 0)

                 {

                      keyValuePairsData += "\n";

                 }

                 keyValuePairsData += "Name: "     + gdpictureOCR.GetKeyValuePairKeyString(ocrResultID, pairIdx) + " | " +

                                      "Value: "    + gdpictureOCR.GetKeyValuePairValueString(ocrResultID, pairIdx) + " | " +

                                      "Type: "     + gdpictureOCR.GetKeyValuePairDataType(ocrResultID, pairIdx).ToString() + " | " +

                                      "Accuracy: " + Math.Round(gdpictureOCR.GetKeyValuePairConfidence(ocrResultID, pairIdx), 1).ToString() + "%";

             }

             MessageBox.Show(keyValuePairsData, caption);

            }

            else

            {

                MessageBox.Show("The OCR process has failed with the status: " + gdpictureOCR.GetStat().ToString(), caption);

            }

            //Release the used image.

            gdpictureImaging.ReleaseGdPictureImage(image);

    }

    else

        MessageBox.Show("The AddLanguage() method has failed with the status: " + gdpictureOCR.GetStat().ToString(), caption);

    gdpictureOCR.ReleaseOCRResults();

}
Example
Extracting key-value pairs from an image. string caption = "Example: KVP/OCR"; using (GdPictureOCR gdpictureOCR = new GdPictureOCR()) { //Set up your prefered parameters for OCR. gdpictureOCR.ResourcesFolder = "\\GdPicture.Net 14\\redist\\OCR"; gdpictureOCR.EnableSkewDetection = true; if (gdpictureOCR.AddLanguage(OCRLanguage.English) == GdPictureStatus.OK) { //Set up the image you want to process. GdPictureImaging gdpictureImaging = new GdPictureImaging(); //The standard open file dialog displays to allow you to select the file. int image = gdpictureImaging.CreateGdPictureImageFromFile(""); gdpictureOCR.SetImage(image); string ocrResultID = gdpictureOCR.RunOCR(); if (gdpictureOCR.GetStat() == GdPictureStatus.OK) { string keyValuePairsData = ""; for (int pairIdx = 0; pairIdx < gdpictureOCR.GetKeyValuePairCount(ocrResultID); pairIdx++) { if (pairIdx != 0) { keyValuePairsData += "\n"; } keyValuePairsData += "Name: " + gdpictureOCR.GetKeyValuePairKeyString(ocrResultID, pairIdx) + " | " + "Value: " + gdpictureOCR.GetKeyValuePairValueString(ocrResultID, pairIdx) + " | " + "Type: " + gdpictureOCR.GetKeyValuePairDataType(ocrResultID, pairIdx).ToString() + " | " + "Accuracy: " + Math.Round(gdpictureOCR.GetKeyValuePairConfidence(ocrResultID, pairIdx), 1).ToString() + "%"; } MessageBox.Show(keyValuePairsData, caption); } else { MessageBox.Show("The OCR process has failed with the status: " + gdpictureOCR.GetStat().ToString(), caption); } //Release the used image. gdpictureImaging.ReleaseGdPictureImage(image); } else MessageBox.Show("The AddLanguage() method has failed with the status: " + gdpictureOCR.GetStat().ToString(), caption); gdpictureOCR.ReleaseOCRResults(); }
See Also

Reference

GdPictureOCR Class
GdPictureOCR Members
RunOCR Method