public void IndexFiles(FileInfo[] imageFiles, System.ComponentModel.BackgroundWorker IndexBgWorker,
Action <string> logWriter,
SurfSettings surfSetting = null)
{
#region Surf Dectator Region
double hessianThresh = 500;
double uniquenessThreshold = 0.8;
if (surfSetting != null)
{
hessianThresh = surfSetting.HessianThresh.Value;
uniquenessThreshold = surfSetting.UniquenessThreshold.Value;
}
SURFDetector surfDectector = new SURFDetector(hessianThresh, false);
#endregion
List <SURFRecord2> surfRecord2List = new List <SURFRecord2>();
Stopwatch sw1, sw2;
sw1 = Stopwatch.StartNew();
logWriter("Index started...");
int totalFileCount = imageFiles.Length;
for (int i = 0; i < totalFileCount; i++)
{
var fi = imageFiles[i];
using (Image <Gray, byte> observerImage = new Image <Gray, byte>(fi.FullName))
{
ImageFeature <float>[] observerFeatures = surfDectector.DetectFeatures(observerImage, null);
if (observerFeatures.Length > 4)
{
SURFRecord2 record = new SURFRecord2
{
Id = i,
ImageName = fi.Name,
ImagePath = fi.FullName,
observerFeatures = observerFeatures
};
surfRecord2List.Add(record);
}
else
{
Debug.WriteLine(fi.Name + " skip from index, because it didn't have significant feature");
}
}
IndexBgWorker.ReportProgress(i);
}
SurfRepository.AddSURFRecord2List(surfRecord2List);
sw1.Stop();
logWriter(string.Format("Index Complete, it tooked {0} ms. Saving Repository...", sw1.ElapsedMilliseconds));
sw2 = Stopwatch.StartNew();
SurfRepository.SaveRepository(SurfAlgo.Linear);
sw2.Stop();
logWriter(string.Format("Index tooked {0} ms. Saving Repository tooked {1} ms", sw1.ElapsedMilliseconds, sw2.ElapsedMilliseconds));
}
/// <summary>
/// Retrieve cached item
/// </summary>
/// <typeparam name="SURFRecord2"></typeparam>
/// <param name="key">Name of cached item</param>
/// <param name="value">Cached value. Default(SURFRecord2) if item doesn't exist.</param>
/// <returns>SURFRecord2 cache item</returns>
public static bool GetSURFRecord2(string key, out SURFRecord2 value)
{
try
{
if (!Exists(key))
{
value = default(SURFRecord2);
return(false);
}
value = (SURFRecord2)cache[key];
}
catch
{
value = default(SURFRecord2);
return(false);
}
return(true);
}
