private static void PerformAlpr(AlprNet alpr, byte[] buffer, bool benchmark, bool writeJson)
{
var sw = Stopwatch.StartNew();
sbyte[] signedBuffer = (sbyte[])(Array)buffer;
var results = alpr.recognize(signedBuffer);
sw.Stop();
if (benchmark)
{
Console.WriteLine("Total Time to process image(s): {0} msec(s)", sw.ElapsedMilliseconds);
}
if (writeJson)
{
//Console.WriteLine(alpr.toJson());
}
else
{
var i = 0;
foreach (var result in results.plates)
{
Console.WriteLine("Plate {0}: {1} result(s)", i++, result.topNPlates.Count);
Console.WriteLine(" Processing Time: {0} msec(s)", result.processing_time_ms);
foreach (var plate in result.topNPlates)
{
Console.WriteLine(" - {0}\t Confidence: {1}\tMatches Template: {2}", plate.characters,
plate.overall_confidence, plate.matches_template);
}
}
}
}
static void Main(string[] args)
{
var alpr = new AlprNet(DEFAULT_PAIS, RUTA_CONF, RUTA_RUNTIME_DATA);
if (!alpr.isLoaded())
{
Console.WriteLine(MENSAJE_ERROR_CARGA);
return;
}
// Opcional, configurar el patron para una region en particular
alpr.DefaultRegion = DEFAULT_REGION;
var resultados = alpr.recognize(IMAGEN_PLACA_EJEMPLO);
int i = 0;
foreach (var resultado in resultados.plates)
{
Console.WriteLine(MENSAJE_INICIO_RESULTADO, i++, resultado.topNPlates.Count);
Console.WriteLine(MENSAJE_TIEMPO_PROCESAMIENTO, resultado.processing_time_ms);
foreach (var placa in resultado.topNPlates)
{
Console.WriteLine(MENSAJE_RESULTADO_FINAL, placa.characters,
placa.overall_confidence, placa.matches_template);
}
}
Console.ReadKey();
}
private void processImageFile(string fileName)
{
resetControls();
var region = rbUSA.Checked ? "us" : "eu";
String config_file = Path.Combine(AssemblyDirectory, "openalpr.conf");
String runtime_data_dir = Path.Combine(AssemblyDirectory, "runtime_data");
using (var alpr = new AlprNet(region, config_file, runtime_data_dir))
{
if (!alpr.isLoaded())
{
lbxPlates.Items.Add("Error initializing OpenALPR");
return;
}
picOriginal.ImageLocation = fileName;
picOriginal.Load();
var results = alpr.recognize(fileName);
var images = new List <Image>(results.plates.Count());
var i = 1;
foreach (var result in results.plates)
{
var rect = boundingRectangle(result.plate_points);
var img = Image.FromFile(fileName);
var cropped = cropImage(img, rect);
images.Add(cropped);
lbxPlates.Items.Add("\t\t-- Plate #" + i++ + " --");
foreach (var plate in result.topNPlates)
{
lbxPlates.Items.Add(string.Format(@"{0} {1}% {2}",
plate.characters.PadRight(12),
plate.overall_confidence.ToString("N1").PadLeft(8),
plate.matches_template.ToString().PadLeft(8)));
}
}
if (images.Any())
{
picLicensePlate.Image = combineImages(images);
}
}
}
/// <summary>
/// Gets all license plate matches for their confidence for given image
/// </summary>
/// <param name="country">Country (US / EU)</param>
/// <param name="imagePath">Image path</param>
/// <returns>License plate matches for their confidence</returns>
public List<Result> GetPlateNumberCandidates(Country country, string imagePath)
{
var ass = Assembly.GetExecutingAssembly();
var assemblyDirectory = Path.GetDirectoryName(ass.Location);
var configFile = Path.Combine(assemblyDirectory, "openalpr", "openalpr.conf");
var runtimeDataDir = Path.Combine(assemblyDirectory, "openalpr", "runtime_data");
using (var alpr = new AlprNet(country == Country.EU ? "eu" : "us", configFile, runtimeDataDir))
{
if (!alpr.isLoaded())
{
throw new Exception("Error initializing OpenALPR");
}
var results = alpr.recognize(imagePath);
return results.plates.SelectMany(l => l.topNPlates.Select(plate => new Result
{
PlateNumber = plate.characters,
Confidence = plate.overall_confidence
})).ToList();
}
}
/// <summary>
/// Gets all license plate matches for their confidence for given image
/// </summary>
/// <param name="country">Country (US / EU)</param>
/// <param name="imagePath">Image path</param>
/// <returns>License plate matches for their confidence</returns>
public List <Result> GetPlateNumberCandidates(Country country, string imagePath)
{
var ass = Assembly.GetExecutingAssembly();
var assemblyDirectory = Path.GetDirectoryName(ass.Location);
var configFile = Path.Combine(assemblyDirectory, "openalpr", "openalpr.conf");
var runtimeDataDir = Path.Combine(assemblyDirectory, "openalpr", "runtime_data");
using (var alpr = new AlprNet(country == Country.EU ? "eu" : "us", configFile, runtimeDataDir))
{
if (!alpr.isLoaded())
{
throw new Exception("Error initializing OpenALPR");
}
var results = alpr.recognize(imagePath);
return(results.plates.SelectMany(l => l.topNPlates.Select(plate => new Result
{
PlateNumber = plate.characters,
Confidence = plate.overall_confidence
})).ToList());
}
}
private static void PerformAlpr(AlprNet alpr, byte[] buffer, bool benchmark, bool writeJson)
{
var sw = Stopwatch.StartNew();
sbyte[] signedBuffer = (sbyte[])(Array)buffer;
var results = alpr.recognize(signedBuffer);
sw.Stop();
if (benchmark)
{
Console.WriteLine("Total Time to process image(s): {0} msec(s)", sw.ElapsedMilliseconds);
}
if (writeJson)
{
//Console.WriteLine(alpr.toJson());
}
else
{
var i = 0;
foreach (var result in results.plates)
{
Console.WriteLine("Plate {0}: {1} result(s)", i++, result.topNPlates.Count);
Console.WriteLine(" Processing Time: {0} msec(s)", result.processing_time_ms);
foreach (var plate in result.topNPlates)
{
Console.WriteLine(" - {0}\t Confidence: {1}\tMatches Template: {2}", plate.characters,
plate.overall_confidence, plate.matches_template);
}
}
}
}
private void processImageFile(string fileName)
{
resetControls();
var region = rbUSA.Checked ? "us" : "eu";
String config_file = Path.Combine(AssemblyDirectory, "openalpr.conf");
String runtime_data_dir = Path.Combine(AssemblyDirectory, "runtime_data");
using (var alpr = new AlprNet(region, config_file, runtime_data_dir))
{
if (!alpr.isLoaded())
{
lbxPlates.Items.Add("Error initializing OpenALPR");
return;
}
picOriginal.ImageLocation = fileName;
picOriginal.Load();
var results = alpr.recognize(fileName);
var images = new List<Image>(results.plates.Count());
var i = 1;
foreach (var result in results.plates)
{
var rect = boundingRectangle(result.plate_points);
var img = Image.FromFile(fileName);
var cropped = cropImage(img, rect);
images.Add(cropped);
lbxPlates.Items.Add("\t\t-- Plate #" + i++ + " --");
foreach (var plate in result.topNPlates)
{
lbxPlates.Items.Add(string.Format(@"{0} {1}% {2}",
plate.characters.PadRight(12),
plate.overall_confidence.ToString("N1").PadLeft(8),
plate.matches_template.ToString().PadLeft(8)));
}
}
if (images.Any())
{
picLicensePlate.Image = combineImages(images);
}
}
}
