GetTableCellText Method (GdPictureOCR)

In This Topic

Returns the text content of a cell in a specified table.

Syntax

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

'Declaration

 

Public Function GetTableCellText( _

   ByVal OCRResultID As String, _

   ByVal TableIdx As Integer, _

   ByVal ColummIdx As Integer, _

   ByVal RowIdx As Integer _

) As String

public string GetTableCellText( 

   string OCRResultID,

   int TableIdx,

   int ColummIdx,

   int RowIdx

)

public function GetTableCellText( 

    OCRResultID: String;

    TableIdx: Integer;

    ColummIdx: Integer;

    RowIdx: Integer

): String;

public function GetTableCellText( 

   OCRResultID : String,

   TableIdx : int,

   ColummIdx : int,

   RowIdx : int

) : String;

public: string* GetTableCellText( 

   string* OCRResultID,

   int TableIdx,

   int ColummIdx,

   int RowIdx

)

public:

String^ GetTableCellText( 

   String^ OCRResultID,

   int TableIdx,

   int ColummIdx,

   int RowIdx

)

Parameters

OCRResultID: The unique result identifier of the executed OCR process obtained by the GdPictureOCR.RunOCR method.
TableIdx: The 0-based index of the detected table within the specified OCR result. It must be a value between 0 and GdPictureOCR.GetTableCount(OCRResultID) - 1.
ColummIdx: The 0-based index of the cell's column in a detected table within the specified OCR result. It must be a value between 0 and GdPictureOCR.GetTableColumnCount(OCRResultID) - 1.
RowIdx: The 0-based index of the cell's row in a detected table within the specified OCR result. It must be a value between 0 and GdPictureOCR.GetTableRowCount(OCRResultID) - 1.

Return Value

The text content of the cell.

Remarks

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

Example

using GdPictureImaging img = new GdPictureImaging();

int invoiceId = img.CreateGdPictureImageFromHTTP("https://passportpdfapi.com/", "test/invoice.png", 443);

if (img.GetStat() != GdPictureStatus.OK)

{

    Console.WriteLine($"An error occurred during image loading ({img.GetStat()})");

    return;

}

 

using GdPictureOCR ocr = new GdPictureOCR();

ocr.ResourcesFolder = RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ? "C:\\GdPicture.Net 14\\redist\\OCR" : "/mnt/c/GdPicture.Net 14/redist/OCR";

ocr.OCRMode = OCRMode.FavorAccuracy;

ocr.AddLanguage(OCRLanguage.French);

ocr.SetImage(invoiceId);

 

string ocrResultId = ocr.RunOCR();

 

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

{

    Console.WriteLine();

    for (int tableIdx = 0; tableIdx < ocr.GetTableCount(ocrResultId); tableIdx++)

    {

        int colCount = ocr.GetTableColumnCount(ocrResultId, tableIdx);

        int rowCount = ocr.GetTableRowCount(ocrResultId, tableIdx);

        string[,] tableContent = new string[colCount, rowCount];

        int[] maxLinesInRows = new int[rowCount];

 

        for (int rowIdx = 0; rowIdx < rowCount; rowIdx++)

        {

            for (int colIdx = 0; colIdx < colCount; colIdx++)

            {

                tableContent[colIdx, rowIdx] = ocr.GetTableCellText(ocrResultId, tableIdx, colIdx, rowIdx);

            }

        }

 

        // Compute table formatting

        int[] widestCellInColumn = new int[colCount];

        for (int colIdx = 0; colIdx < colCount; colIdx++)

        for (int rowIdx = 0; rowIdx < rowCount; rowIdx++)

        {

            if (tableContent[colIdx, rowIdx].Length > widestCellInColumn[colIdx])

            {

                widestCellInColumn[colIdx] = tableContent[colIdx, rowIdx].Length;

            }

        }

        int rowLength = widestCellInColumn.Sum() + (3 * colCount);

        string separator = new string('=', (int)Math.Truncate((double)rowLength / 2) - 4);

 

        // Print table

        Console.WriteLine($"{separator} Table {tableIdx} {separator}");

        //if first two column is consired as header, consider the entire row as header

        bool isHorizontalHeaderRow = ocr.IsHeaderCell(ocrResultId, tableIdx, 0, 0) && ocr.IsHeaderCell(ocrResultId, tableIdx, 1, 0);

        for (int rowIdx = 0; rowIdx < rowCount; rowIdx++)

        {

            bool isCurrentRowHeader = ocr.IsHeaderCell(ocrResultId, tableIdx, 0, rowIdx) && ocr.IsHeaderCell(ocrResultId, tableIdx, 1, rowIdx);

            for (int colIdx = 0; colIdx < colCount; colIdx++)

            {

                string prettifiedCell = tableContent[colIdx, rowIdx].Replace(Environment.NewLine, "").PadRight(widestCellInColumn[colIdx]);

                Console.Write($" {prettifiedCell} |{(!isHorizontalHeaderRow ? "|" : null)}");

            }

            Console.WriteLine();

            if (isCurrentRowHeader)

            {

                Console.WriteLine(new string('=', rowLength)); //If header row, write a header separator

            }

        }

        Console.WriteLine($"{separator} Table {tableIdx} {separator}");

        Console.WriteLine();

 

    }

    ocr.ReleaseOCRResult(ocrResultId);

    img.ReleaseGdPictureImage(invoiceId);

}

else

{

    Console.WriteLine($"OCR result : {ocr.GetStat()}");

}

Reference

GdPictureOCR Class
GdPictureOCR Members
GetTableCount Method
GetTableRect Method
GetTableColumnCount Method
GetTableCellRect Method
GetTableColumnRect Method
GetTableRowCount Method
GetTableRowRect Method
IsHeaderCell Method