private int[] splitImage(FREngine.IFRDocument frDoc, FREngine.IPageProcessingParams ppp, ProcessingSettings settings)
{
FREngine.PageSplittingParams pageSplittingParams = engine.CreatePageSplittingParams();
pageSplittingParams.SplitType = FREngine.PageSplitTypeEnum.PST_None;
if (settings.SplitPages)
{
pageSplittingParams.SplitType = FREngine.PageSplitTypeEnum.PST_DoublePageSplit;
}
else if (settings.SplitBusinessCards)
{
pageSplittingParams.SplitType = FREngine.PageSplitTypeEnum.PST_BusinessCardSplit;
}
else
{
int[] emptyPageIndices = new int[1];
emptyPageIndices[0] = 0;
return(emptyPageIndices);
}
if (settings.CorrectOrientationMode != ProcessingSettings.OrientationCorrectionMode.None)
{
ppp.PagePreprocessingParams.CorrectOrientation = true;
}
engine.MultiProcessingParams.MultiProcessingMode = FREngine.MultiProcessingModeEnum.MPM_Sequential;
FREngine.SplitRegions splitRegions = frDoc.SplitPages(null, pageSplittingParams, ppp.ObjectsExtractionParams);
engine.MultiProcessingParams.MultiProcessingMode = FREngine.MultiProcessingModeEnum.MPM_Auto;
int[] sourcePageIndices = new int[frDoc.Pages.Count];
for (int pageIndex = 0; pageIndex < sourcePageIndices.Length; pageIndex++)
{
sourcePageIndices[pageIndex] = -1;
}
foreach (FREngine.SplitRegion item in splitRegions)
{
FREngine.IFRPage frPage = frDoc.Pages[item.CurrentPageIndex];
sourcePageIndices[item.CurrentPageIndex] = item.SourcePageIndex;
if (settings.CropImage)
{
frPage.ImageDocument.CropImage();
}
if (settings.CorrectDistortions)
{
frPage.CorrectGeometricalDistortions(ppp.ObjectsExtractionParams);
}
if (settings.DeskewImage)
{
frPage.ImageDocument.CorrectSkew(correctSkewFlags);
}
frPage.Flush(true);
}
for (int pageIndex = 0; pageIndex < sourcePageIndices.Length; pageIndex++)
{
if (sourcePageIndices[pageIndex] == -1)
{
sourcePageIndices[pageIndex] = pageIndex == 0 ? 0 : sourcePageIndices[pageIndex - 1] + 1;
}
}
return(sourcePageIndices);
}
private void applyGeometricalTransformations(FREngine.IFRPage page, FREngine.IPageProcessingParams ppp, ProcessingSettings settings,
FREngine.RotationTypeEnum detectedRotation)
{
checkProcessingSettingsForImage(page.ImageDocument.ImageColorType, ref settings);
if (settings.CropImage)
{
page.ImageDocument.CropImage();
}
if (settings.EnhanceLocalContrast)
{
page.ImageDocument.EnhanceLocalContrast();
}
if (settings.CorrectOrientationMode != ProcessingSettings.OrientationCorrectionMode.None && detectedRotation != FREngine.RotationTypeEnum.RT_NoRotation)
{
FREngine.RotationTypeEnum rotation = FREngine.RotationTypeEnum.RT_NoRotation;
bool mirror = false;
if (detectedRotation != FREngine.RotationTypeEnum.RT_UnknownRotation)
{
switch (detectedRotation)
{
case FREngine.RotationTypeEnum.RT_Clockwise:
rotation = FREngine.RotationTypeEnum.RT_Counterclockwise;
break;
case FREngine.RotationTypeEnum.RT_Upsidedown:
rotation = FREngine.RotationTypeEnum.RT_Upsidedown;
break;
case FREngine.RotationTypeEnum.RT_Counterclockwise:
rotation = FREngine.RotationTypeEnum.RT_Clockwise;
break;
default:
break;
}
}
else
{
switch (settings.CorrectOrientationMode)
{
case ProcessingSettings.OrientationCorrectionMode.Rotate90CW:
rotation = FREngine.RotationTypeEnum.RT_Clockwise;
break;
case ProcessingSettings.OrientationCorrectionMode.Rotate180UpsideDown:
rotation = FREngine.RotationTypeEnum.RT_Upsidedown;
break;
case ProcessingSettings.OrientationCorrectionMode.Rotate90CCW:
rotation = FREngine.RotationTypeEnum.RT_Counterclockwise;
break;
case ProcessingSettings.OrientationCorrectionMode.MirrorHorizontally:
mirror = true;
break;
default:
break;
}
}
page.ImageDocument.Transform(rotation, mirror, false);
}
if (settings.InvertImage)
{
page.ImageDocument.Transform(FREngine.RotationTypeEnum.RT_NoRotation, false, true);
}
if (settings.CorrectDistortions)
{
page.CorrectGeometricalDistortions(ppp.ObjectsExtractionParams);
}
if (settings.DeskewImage)
{
page.ImageDocument.CorrectSkew(correctSkewFlags);
}
}
