// Main procedure
private void action()
{
// Local iconic variables
HObject ho_Image, ho_DarkRegion = null, ho_CharRegion = null;
HObject ho_CharConnected = null, ho_CharOrig = null, ho_CharSel = null;
HObject ho_Characters = null, ho_CharRectangle = null, ho_CharROI = null;
HObject ho_ImageReduced = null, ho_ImageScaled = null, ho_CharConvex = null;
HObject ho_SingleChar = null;
// Local control variables
HTuple hv_OCRFontName, hv_FontName, hv_FontImages;
HTuple hv_NumImages, hv_Width, hv_Height, hv_WindowID;
HTuple hv_OCRHandle, hv_WidthCharacter, hv_HeightCharacter;
HTuple hv_Interpolation, hv_Features, hv_Char, hv_NumHidden;
HTuple hv_Preprocessing, hv_NumComponents, hv_NumChar;
HTuple hv_NumSamples, hv_i, hv_Min = new HTuple(), hv_Max = new HTuple();
HTuple hv_Range = new HTuple(), hv_WindowChar = new HTuple();
HTuple hv_DoLoop = new HTuple(), hv_Row = new HTuple(), hv_Column = new HTuple();
HTuple hv_Button = new HTuple(), hv_Index = new HTuple(), hv_RecChar = new HTuple();
HTuple hv_Confidence = new HTuple();
// Initialize local and output iconic variables
HOperatorSet.GenEmptyObj(out ho_Image);
HOperatorSet.GenEmptyObj(out ho_DarkRegion);
HOperatorSet.GenEmptyObj(out ho_CharRegion);
HOperatorSet.GenEmptyObj(out ho_CharConnected);
HOperatorSet.GenEmptyObj(out ho_CharOrig);
HOperatorSet.GenEmptyObj(out ho_CharSel);
HOperatorSet.GenEmptyObj(out ho_Characters);
HOperatorSet.GenEmptyObj(out ho_CharRectangle);
HOperatorSet.GenEmptyObj(out ho_CharROI);
HOperatorSet.GenEmptyObj(out ho_ImageReduced);
HOperatorSet.GenEmptyObj(out ho_ImageScaled);
HOperatorSet.GenEmptyObj(out ho_CharConvex);
HOperatorSet.GenEmptyObj(out ho_SingleChar);
try
{
//
//OCR
//
// dev_update_window(...); only in hdevelop
//Specify the name of the font to use for reading the date on the bottle.
//It is easiest to use the pre-trained font Document. If you have run the
//program fontt.hdev in this directory, you can activate the second line
//to use the font trained with this program.
hv_OCRFontName = "Document";
//OCRFontName := 'arial'
hv_FontName = "arial";
hv_FontImages = new HTuple();
hv_FontImages[0] = "a1";
hv_FontImages[1] = "a2";
hv_FontImages[2] = "a3";
hv_FontImages[3] = "a4";
hv_FontImages[4] = "a5";
hv_FontImages[5] = "a6";
hv_FontImages[6] = "a7";
hv_FontImages[7] = "a8";
hv_FontImages[8] = "a9";
hv_NumImages = new HTuple(hv_FontImages.TupleLength());
ho_Image.Dispose();
HOperatorSet.ReadImage(out ho_Image, (("fonts/" + hv_FontName) + "_") + (hv_FontImages.TupleSelect(
0)));
if (HDevWindowStack.IsOpen())
{
HOperatorSet.CloseWindow(HDevWindowStack.Pop());
}
HOperatorSet.GetImageSize(ho_Image, out hv_Width, out hv_Height);
HOperatorSet.SetWindowAttr("background_color", "black");
HOperatorSet.OpenWindow(0, 0, hv_Width / 2, hv_Height / 2, 0, "", "", out hv_WindowID);
HDevWindowStack.Push(hv_WindowID);
set_display_font(hv_WindowID, 14, "mono", "true", "false");
if (HDevWindowStack.IsOpen())
{
HOperatorSet.DispObj(ho_Image, HDevWindowStack.GetActive());
}
disp_continue_message(hv_WindowID, "black", "true");
//stop ()
//---------- read OCR classifier ----------
HOperatorSet.ReadOcrClassMlp(hv_OCRFontName, out hv_OCRHandle);
HOperatorSet.GetParamsOcrClassMlp(hv_OCRHandle, out hv_WidthCharacter, out hv_HeightCharacter,
out hv_Interpolation, out hv_Features, out hv_Char, out hv_NumHidden, out hv_Preprocessing,
out hv_NumComponents);
hv_NumChar = new HTuple(hv_Char.TupleLength());
disp_continue_message(hv_WindowID, "black", "true");
HDevelopStop();
//---------- segmentation of characters ----------
if (HDevWindowStack.IsOpen())
{
HOperatorSet.SetDraw(HDevWindowStack.GetActive(), "margin");
}
if (HDevWindowStack.IsOpen())
{
HOperatorSet.SetShape(HDevWindowStack.GetActive(), "rectangle1");
}
hv_NumSamples = 0;
for (hv_i = 1; hv_i.Continue(hv_NumImages, 1); hv_i = hv_i.TupleAdd(1))
{
if (HDevWindowStack.IsOpen())
{
HOperatorSet.SetColored(HDevWindowStack.GetActive(), 12);
}
ho_Image.Dispose();
HOperatorSet.ReadImage(out ho_Image, (("fonts/" + hv_FontName) + "_") + (hv_FontImages.TupleSelect(
hv_i - 1)));
ho_DarkRegion.Dispose();
HOperatorSet.BinThreshold(ho_Image, out ho_DarkRegion);
ho_CharRegion.Dispose();
HOperatorSet.ClosingCircle(ho_DarkRegion, out ho_CharRegion, 8.5);
ho_CharConnected.Dispose();
HOperatorSet.Connection(ho_CharRegion, out ho_CharConnected);
ho_CharOrig.Dispose();
HOperatorSet.Intersection(ho_CharConnected, ho_DarkRegion, out ho_CharOrig
);
ho_CharSel.Dispose();
HOperatorSet.SelectShape(ho_CharOrig, out ho_CharSel, "area", "and", 50,
99999);
ho_Characters.Dispose();
HOperatorSet.SortRegion(ho_CharSel, out ho_Characters, "character", "true",
"row");
//adapt to different brigthness
ho_CharRectangle.Dispose();
HOperatorSet.ShapeTrans(ho_CharRegion, out ho_CharRectangle, "rectangle1");
ho_CharROI.Dispose();
HOperatorSet.DilationRectangle1(ho_CharRectangle, out ho_CharROI, 10, 10);
ho_ImageReduced.Dispose();
HOperatorSet.ReduceDomain(ho_Image, ho_CharROI, out ho_ImageReduced);
HOperatorSet.MinMaxGray(ho_CharROI, ho_Image, 5, out hv_Min, out hv_Max,
out hv_Range);
ho_ImageScaled.Dispose();
HOperatorSet.ScaleImage(ho_ImageReduced, out ho_ImageScaled, 255 / hv_Range,
((-hv_Min) * 255) / hv_Range);
if (HDevWindowStack.IsOpen())
{
HOperatorSet.DispObj(ho_Image, HDevWindowStack.GetActive());
}
if (HDevWindowStack.IsOpen())
{
HOperatorSet.SetColor(HDevWindowStack.GetActive(), "green");
}
if (HDevWindowStack.IsOpen())
{
HOperatorSet.DispObj(ho_Characters, HDevWindowStack.GetActive());
}
disp_continue_message(hv_WindowID, "black", "true");
HDevelopStop();
//interactive OCR
HOperatorSet.SetWindowAttr("background_color", "black");
HOperatorSet.OpenWindow(0, (hv_Width / 2) + 50, 128, 128, 0, "", "", out hv_WindowChar);
HDevWindowStack.Push(hv_WindowChar);
set_display_font(hv_WindowChar, 27, "mono", "true", "false");
HDevWindowStack.SetActive(hv_WindowID);
ho_CharConvex.Dispose();
HOperatorSet.ShapeTrans(ho_Characters, out ho_CharConvex, "rectangle1");
if (HDevWindowStack.IsOpen())
{
HOperatorSet.DispObj(ho_Image, HDevWindowStack.GetActive());
}
hv_DoLoop = 1;
while ((int)(new HTuple(hv_DoLoop.TupleEqual(1))) != 0)
{
if (HDevWindowStack.IsOpen())
{
HOperatorSet.SetColor(HDevWindowStack.GetActive(), "red");
}
disp_message(hv_WindowID, "Left-click on a character to read; right mouse button to proceed to next image",
"image", 8, 10, "blue", "false");
HOperatorSet.GetMbutton(hv_WindowID, out hv_Row, out hv_Column, out hv_Button);
if (HDevWindowStack.IsOpen())
{
HOperatorSet.DispObj(ho_Image, HDevWindowStack.GetActive());
}
HOperatorSet.GetRegionIndex(ho_CharConvex, hv_Row, hv_Column, out hv_Index);
if ((int)(new HTuple(hv_Index.TupleGreater(0))) != 0)
{
ho_SingleChar.Dispose();
HOperatorSet.SelectObj(ho_Characters, out ho_SingleChar, hv_Index);
HOperatorSet.DoOcrSingleClassMlp(ho_SingleChar, ho_ImageScaled, hv_OCRHandle,
1, out hv_RecChar, out hv_Confidence);
HDevWindowStack.SetActive(hv_WindowChar);
if (HDevWindowStack.IsOpen())
{
HOperatorSet.SetPart(HDevWindowStack.GetActive(), 0, 0, 127, 127);
}
if (HDevWindowStack.IsOpen())
{
HOperatorSet.ClearWindow(HDevWindowStack.GetActive());
}
disp_message(hv_WindowChar, hv_RecChar.TupleSelect(0), "image", 40, 53,
"green", "false");
HDevWindowStack.SetActive(hv_WindowID);
if (HDevWindowStack.IsOpen())
{
HOperatorSet.SetPart(HDevWindowStack.GetActive(), 0, 0, hv_Height - 1,
hv_Width - 1);
}
}
if ((int)(new HTuple(hv_Button.TupleEqual(4))) != 0)
{
hv_DoLoop = 0;
HDevWindowStack.SetActive(hv_WindowChar);
if (HDevWindowStack.IsOpen())
{
HOperatorSet.CloseWindow(HDevWindowStack.Pop());
}
HDevWindowStack.SetActive(hv_WindowID);
}
}
}
HOperatorSet.ClearOcrClassMlp(hv_OCRHandle);
if (HDevWindowStack.IsOpen())
{
HOperatorSet.SetShape(HDevWindowStack.GetActive(), "original");
}
// dev_update_window(...); only in hdevelop
}
catch (HalconException HDevExpDefaultException)
{
ho_Image.Dispose();
ho_DarkRegion.Dispose();
ho_CharRegion.Dispose();
ho_CharConnected.Dispose();
ho_CharOrig.Dispose();
ho_CharSel.Dispose();
ho_Characters.Dispose();
ho_CharRectangle.Dispose();
ho_CharROI.Dispose();
ho_ImageReduced.Dispose();
ho_ImageScaled.Dispose();
ho_CharConvex.Dispose();
ho_SingleChar.Dispose();
throw HDevExpDefaultException;
}
ho_Image.Dispose();
ho_DarkRegion.Dispose();
ho_CharRegion.Dispose();
ho_CharConnected.Dispose();
ho_CharOrig.Dispose();
ho_CharSel.Dispose();
ho_Characters.Dispose();
ho_CharRectangle.Dispose();
ho_CharROI.Dispose();
ho_ImageReduced.Dispose();
ho_ImageScaled.Dispose();
ho_CharConvex.Dispose();
ho_SingleChar.Dispose();
}