private void frmMain_Load(object sender, EventArgs e)
{
VisionLab.InitVisionLib();
lexicon = null;
blobMatcher = null;
LoadFiles();
}
/*
* Description:
* Load the pattern matcher and scripts
*/
private void LoadFiles()
{
try
{
ErrorTB.Text = "";
if (chkUseScripts.Checked)
{
chkUseLexicon.Checked = false;
chkUseLexicon.Enabled = false;
}
else
{
chkUseLexicon.Enabled = true;
}
if (chkUseScripts.Checked)
{
LicensePlateMatcherScript.Init();
}
String exePath = Path.GetDirectoryName(System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName);
if (blobMatcher == null)
{
blobMatcher = new BlobMatcher_Int32();
}
blobMatcher.ReadFromFile(exePath + "\\..\\..\\..\\..\\..\\..\\VL\\lic_fonts.pm");
if (lexicon == null)
{
lexicon = new ClassLexicon(blobMatcher.GetPatternNamesTab());
}
}
catch (System.Exception ex)
{
ErrorTB.Text = ex.Message;
}
}
internal static HandleRef getCPtr(BlobMatcher_Int32 obj)
{
return((obj == null) ? new HandleRef(null, IntPtr.Zero) : obj.swigCPtr);
}
internal static global::System.Runtime.InteropServices.HandleRef getCPtr(BlobMatcher_Int32 obj)
{
return((obj == null) ? new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero) : obj.swigCPtr);
}
/*
* Description:
* Read the license plate
* Input:
* //Rectified license plate image containing six characters
* Int32Image labeledRectifiedPlateImage
* Output:
* //Result by the blob matcher
* ref LicensePlate result
* Return:
* //six characters found
* bool
*/
public static bool MatchPlate(Int32Image binaryCharacterImage, BlobMatcher_Int32 matcher, ClassLexicon lexicon, ref LicensePlate result, ref LicensePlate lexiconResult)
{
try
{
//Check if 6 characters/blobs have been found and label image.
if (VisionLab.LabelBlobs(binaryCharacterImage, Connected.EightConnected) != 6)
{
return(false);
}
//Calculate dimensions and locations of all characters/blobs.
vector_BlobAnalyse ba_vec = new vector_BlobAnalyse();
ba_vec.Add(BlobAnalyse.BA_TopLeft);
ba_vec.Add(BlobAnalyse.BA_Height);
ba_vec.Add(BlobAnalyse.BA_Width);
vector_Blob returnBlobs = new vector_Blob();
VisionLab.BlobAnalysis(binaryCharacterImage, VisionLab.VectorToSet_BlobAnalyse(ba_vec), VisionLab.MaxPixel(binaryCharacterImage), returnBlobs, SortOrder.SortDown, BlobAnalyse.BA_TopLeft, UseXOrY.UseX);
ba_vec.Dispose();
Int32Image binaryCharacter = new Int32Image();
//Create data structure for lexicon.
vector_vector_LetterMatch match = new vector_vector_LetterMatch();
//Process each character/blob.
foreach (Blob b in returnBlobs)
{
//Cut out character
VisionLab.ROI(binaryCharacterImage, binaryCharacter, b.TopLeft(), new HeightWidth(b.Height(), b.Width()));
//Convert ROI result to binary
VisionLab.ClipPixelValue(binaryCharacter, 0, 1);
//Calculate character's classification for all classes.
vector_PatternMatchResult returnMatches = new vector_PatternMatchResult();
float conf = matcher.AllMatches(binaryCharacter, (float)-0.5, (float)0.5, returnMatches);
float err = returnMatches[0].error;
int id = returnMatches[0].id;
string chr = matcher.PatternName(id);
//Fill datastructure for lexicon.
match.Add(VisionLabEx.PatternMatchResultToLetterMatch(returnMatches));
//Store best match in result
result.characters.Add(new LicenseCharacter(chr, err, conf));
}
//Validate match with lexicon.
vector_int bestWord = new vector_int();
lexiconResult.confidence = lexicon.FindBestWord(match, bestWord, Optimize.OptimizeForMinimum);
for (int i = 0; i < bestWord.Count; i++)
{
string character = matcher.PatternName(bestWord[i]);
//Store lexicon result
lexiconResult.characters.Add(new LicenseCharacter(character));
}
binaryCharacter.Dispose();
returnBlobs.Dispose();
match.Dispose();
bestWord.Dispose();
bool[] types = new bool[6];
for (int i = 0; i < 6; i++)
{
types[i] = '0' <= result.characters[i].character[0] && result.characters[i].character[0] <= '9';
}
if (types[0] && types[1] && !types[2] && !types[3] && !types[4] && !types[5])
{
return(true);
}
if (!types[0] && !types[1] && types[2] && types[3] && !types[4] && !types[5])
{
return(true);
}
if (!types[0] && !types[1] && !types[2] && !types[3] && types[4] && types[5])
{
return(true);
}
if (types[0] && !types[1] && !types[2] && !types[3] && types[4] && types[5])
{
return(true);
}
if (types[0] && types[1] && !types[2] && !types[3] && !types[4] && types[5])
{
return(true);
}
return(false);
}
catch (System.Exception ex)
{
throw new Exception("MatchPlate: " + ex.Message);
}
}
internal static HandleRef getCPtr(BlobMatcher_Int32 obj) {
return (obj == null) ? new HandleRef(null, IntPtr.Zero) : obj.swigCPtr;
}
