"Turn" Delphi+halcon combat one: Two lines of code identification QR codes

Delphi+halcon Real Combat One: two lines of code identification QR codes

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Other netizens, have halcon this aspect works, has the need, may also give the ZW forwards.

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Environment:
Delphi XE8 Update1, Halcon 12, a QR code image. The picture is generated by the report tool, then printed and then photographed with the phone. In order to test the interference identification, the picture is doodle-painted.
Results:
The core code only 2 lines, accurate identification, recognition time is only about 25ms!!!!!!!!!!

1 UnitUnit1;2 3 Interface4 5 uses6 winapi.windows, Winapi.messages, System.sysutils, System.variants, system.classes,7 vcl.graphics, Vcl.controls, Vcl.forms, Vcl.dialogs, Vcl.stdctrls, Vcl.oleserver ,8 halconxlib_tlb, Vcl.olectrls, System.Diagnostics;9 Ten type OneTForm1 =class(Tform) A Hwindowxctrl1:thwindowxctrl; - Memo1:tmemo; - Button2:tbutton; the     procedureButton2click (sender:tobject); -   Private -     {Private Declarations} -    Public +     {Public Declarations} -   End; +  A var at Form1:tform1; -  - Implementation -  - {$R *.DFM} -  in procedureTform1.button2click (sender:tobject); - var to Op:hoperatorsetx; + srcimgage, Symbolxlds:huntypedobjectx; - hv_width, hv_height:olevariant; the DATACODEHANDLEQR, ResultHandles1, decodeddatastrings:olevariant; * savefilename:olevariant; $ Stopwatch:tstopwatch;Panax Notoginseng begin -  the Memo1.Lines.Clear; +OP: = Cohoperatorsetx.Create; A   //Clear Image the op. Genemptyobj (srcimgage); +   //reading Images -Op. Readimage (Srcimgage, Extractfilepath (Paramstr (0)) +'img\2dqr.jpg'); $   //to get the size, display the picture according to the actual size of HWINDOWXCTRL1 $ op. GetImageSize (Srcimgage, Hv_width, hv_height); -HWindowXCtrl1.HalconWindow.SetPart (0,0, Hv_height-1, Hv_width-1); -   //Display Image the op. Dispobj (Srcimgage, HWindowXCtrl1.HalconWindow.HalconID); -   //The following two core code, only two lines, you can identify the QR codeWuyi   //For specific parameter descriptions, please see Halcon's help manual theStopwatch: =tstopwatch.startnew; -Op. Createdatacode2dmodel ('QR Code','default_parameters','maximum_recognition', DATACODEHANDLEQR); WuOp. Finddatacode2d (Srcimgage, Symbolxlds, DATACODEHANDLEQR,'Train',' All', ResultHandles1, decodeddatastrings); -   //write the QR code that is identified on the image AboutHWindowXCtrl1.HalconWindow.SetColor ('Red'); $HWindowXCtrl1.HalconWindow.SetTposition ( -, -); -HWindowXCtrl1.HalconWindow.WriteString ('qr code found:'+decodeddatastrings); -   //and show the QR code to memo. -MEMO1.LINES.ADD ('QR Code:'+ Decodeddatastrings +'time consuming:'+ Stopwatch.ElapsedMilliseconds.ToString +'Ms'); A   //re-save a picture with a QR code content +   //Note: read out the QR code followed by a newline character, to be removed, or not save theSavefilename: = Extractfilepath (Paramstr (0)) +'img\'+Trim (decodeddatastrings); -   //saves the current picture, but only saves the current window size $   //I only think of this method, how to display the original image, please ZW rewrite the op. Dumpwindowimage (Srcimgage, HWindowXCtrl1.HalconWindow.HalconID); theOp. Writeimage (Srcimgage,'jpg',0, savefilename); the End; the  - End.

"Go" delphi+halcon combat one: Two lines of code identification QR codes