#include "ltocr.h"
L_LTOCR_API L_INT EXT_FUNCTION L_OcrPage_SetZoneCells(page, index, cells, count)
Sets the cells of a zone.
Handle to the OCR page.
Zone index to remove.
Array of L_OcrZoneCell structure to update the zone at the specified index with. pass NULL for this parameter to clear the zone cells.
Number of elements inside the cells array.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
Sets the cells of a zone. Only zone of type table (L_OcrZoneType_Table) can contain cells.
Required DLLs and Libraries
L_INT L_OcrPage_SetZoneCellsExample()
{
BITMAPHANDLE bitmap = { 0 };
L_OcrEngine ocrEngine = NULL;
L_OcrPage ocrPage = NULL;
L_OcrDocumentManager ocrDocumentManager = NULL;
L_OcrDocument ocrDocument = NULL;
// Create an instance of the engine
L_INT retCode = L_OcrEngineManager_CreateEngine(L_OcrEngineType_Advantage, &ocrEngine);
if(retCode != SUCCESS)
return retCode;
// Start the engine using default parameters
L_OcrEngine_Startup(ocrEngine, NULL, OCR_ADVANTAGE_RUNTIME_DIR);
// Load an image
retCode = L_LoadBitmap(MAKE_IMAGE_PATH(L_TEXT("Clean.tif")), &bitmap, sizeof(BITMAPHANDLE), 0, ORDER_RGB, NULL, NULL);
if(retCode != SUCCESS)
goto CLEANUP;
// Add image to OCR page
retCode = L_OcrPage_FromBitmap(ocrEngine, &ocrPage, &bitmap, L_OcrBitmapSharingMode_AutoFree, NULL, NULL);
if(retCode != SUCCESS)
{
L_FreeBitmap(&bitmap);
goto CLEANUP;
}
// Transfer ownership to OCR page
bitmap.Flags.Allocated = 0;
// Get the setting manager
L_OcrSettingManager ocrSettingManager = NULL;
L_OcrEngine_GetSettingManager(ocrEngine, &ocrSettingManager);
// Remove the "Table Cells as Zones" flag from the Recognition.Zoning.Options setting in order to detect the whole
// table as one zone so we can get its cells later
retCode = L_OcrSettingManager_SetStringValue(ocrSettingManager, TEXT("Recognition.Zoning.Options"), TEXT("Detect Text,Detect Graphics,Detect Table,Detect Accurate Zones,Use Advanced Table Detection"));
if(retCode != SUCCESS)
goto CLEANUP;
// Auto zone the page
retCode = L_OcrPage_AutoZone(ocrPage, NULL, NULL);
if(retCode != SUCCESS)
goto CLEANUP;
// Loop through page zones to find the table zone and manipulate its cells
L_UINT zonesCount = 0;
L_OcrPage_GetZoneCount(ocrPage, &zonesCount);
for(L_UINT i = 0; i < zonesCount; i++)
{
L_OcrZone zone = {0};
zone.StructSize = sizeof(L_OcrZone);
L_OcrPage_GetZoneAt(ocrPage, i, &zone);
if(zone.ZoneType == L_OcrZoneType_Table)
{
L_OcrZoneCell* cells = NULL;
L_UINT cellsCount = 0;
L_OcrPage_GetZoneCells(ocrPage, i, &cells, &cellsCount);
if(cellsCount > 0)
{
// you can do any change you want here for the zone cells, below we will replace the first cell with another one we create
L_OcrZoneCell newCell = {0};
L_OcrCell_Default(&newCell);
newCell.Bounds = cells[0].Bounds;
newCell.LeftBorderWidth = 2;
newCell.TopBorderWidth = 2;
newCell.RightBorderWidth = 2;
newCell.BottomBorderWidth = 2;
cells[0] = newCell;
// set eh cells back to engine after we changed them
L_OcrPage_SetZoneCells(ocrPage, i, cells, cellsCount);
}
}
}
// Recognize the page (automatically zoned)
L_OcrPage_Recognize(ocrPage, NULL, NULL);
// Recognize and save the file to the output format
L_OcrEngine_GetDocumentManager(ocrEngine, &ocrDocumentManager);
// Create file-based OCR document
L_OcrDocumentManager_CreateDocument(ocrDocumentManager, &ocrDocument, L_OcrCreateDocumentOptions_AutoDeleteFile, NULL);
// In Document File Mode, add OcrPage to OcrDocument after recognition
L_OcrDocument_AddPage(ocrDocument, ocrPage);
L_OcrPage_Destroy(ocrPage);
// Save the document we have
L_OcrDocument_Save(ocrDocument, MAKE_IMAGE_PATH(L_TEXT("Output.pdf")), DOCUMENTFORMAT_PDF, NULL, NULL);
CLEANUP:
if(ocrDocument != NULL)
L_OcrDocument_Destroy(ocrDocument);
if(ocrEngine != NULL)
L_OcrEngine_Destroy(ocrEngine);
return SUCCESS;
}