public void IndexFiles(FileInfo[] imageFiles, BackgroundWorker IndexBgWorker, object argument = null)
{
List <PHashImageRecord> listOfRecords = new List <PHashImageRecord>();
string compressHash = string.Empty;
int totalFileCount = imageFiles.Length;
for (int i = 0; i < totalFileCount; i++)
{
var fi = imageFiles[i];
using (Bitmap bmp = new Bitmap(Image.FromFile(fi.FullName)))
{
compressHash = SimilarImage.GetCompressedImageHashAsString(bmp);
}
PHashImageRecord record = new PHashImageRecord
{
Id = i,
ImageName = fi.Name,
ImagePath = fi.FullName,
CompressHash = compressHash
};
listOfRecords.Add(record);
IndexBgWorker.ReportProgress(i);
}
BinaryAlgoRepository <List <PHashImageRecord> > repo = new BinaryAlgoRepository <List <PHashImageRecord> >();
repo.Save(listOfRecords);
}
virtual protected void CompareImages(string FileName1, string FileName2)
{
var Hash1 = SimilarImage.GetCompressedImageHashAsString(new Bitmap(Image.FromFile(FileName1)), Levels);
var Hash2 = SimilarImage.GetCompressedImageHashAsString(new Bitmap(Image.FromFile(FileName2)), Levels);
Console.Write("{0:0.000000}", SimilarImage.CompareHashes(Hash1, Hash2));
}
public List <ImageRecord> QueryImage(string queryImagePath, object argument = null)
{
List <ImageRecord> rtnImageList = new List <ImageRecord>();
string queryImageCompressHash;
using (Bitmap bmp = new Bitmap(System.Drawing.Image.FromFile(queryImagePath)))
{
queryImageCompressHash = SimilarImage.GetCompressedImageHashAsString(bmp);
}
BinaryAlgoRepository <List <PHashImageRecord> > repo = new BinaryAlgoRepository <List <PHashImageRecord> >();
List <PHashImageRecord> AllImage = repo.Load();
foreach (var imgInfo in AllImage)
{
var dist = SimilarImage.CompareHashes(queryImageCompressHash, imgInfo.CompressHash);
if (dist > 0.8)
{
imgInfo.Distance = dist;
rtnImageList.Add(imgInfo);
}
}
rtnImageList = rtnImageList.OrderByDescending(x => x.Distance).ToList();
return(rtnImageList);
}
public void IndexFilesAsync(FileInfo[] imageFiles, BackgroundWorker IndexBgWorker, object argument = null)
{
ConcurrentBag <PHashImageRecord> listOfRecords = new ConcurrentBag <PHashImageRecord>();
string compressHash = string.Empty;
int totalFileCount = imageFiles.Length;
int i = 0; long nextSequence;
//In the class scope: long nextSequence;
Object lockMe = new Object();
Parallel.ForEach(imageFiles, currentImageFile =>
{
var fi = currentImageFile;
using (Bitmap bmp = new Bitmap(Image.FromFile(fi.FullName)))
{
compressHash = SimilarImage.GetCompressedImageHashAsString(bmp);
}
lock (lockMe)
{
nextSequence = i++;
}
PHashImageRecord record = new PHashImageRecord
{
Id = nextSequence,
ImageName = fi.Name,
ImagePath = fi.FullName,
CompressHash = compressHash
};
listOfRecords.Add(record);
IndexBgWorker.ReportProgress(i);
});
BinaryAlgoRepository <List <PHashImageRecord> > repo = new BinaryAlgoRepository <List <PHashImageRecord> >();
repo.Save(listOfRecords.ToList());
}
public void TestMethod1()
{
var Path = "../../../../Samples";
var Hash1_a = SimilarImage.GetCompressedImageHashAsString(new Bitmap(Image.FromFile(Path + "/test1_a.png")));
var Hash1_b = SimilarImage.GetCompressedImageHashAsString(new Bitmap(Image.FromFile(Path + "/test1_b.png")));
var Hash1_c = SimilarImage.GetCompressedImageHashAsString(new Bitmap(Image.FromFile(Path + "/test1_c.png")));
var Hash2 = SimilarImage.GetCompressedImageHashAsString(new Bitmap(Image.FromFile(Path + "/test2.png")));
var Hash3_a = SimilarImage.GetCompressedImageHashAsString(new Bitmap(Image.FromFile(Path + "/test3_a.jpg")));
var Hash3_b = SimilarImage.GetCompressedImageHashAsString(new Bitmap(Image.FromFile(Path + "/test3_b.jpg")));
Assert.IsTrue(SimilarImage.CompareHashesBool(Hash1_a, Hash1_b));
Assert.IsTrue(SimilarImage.CompareHashesBool(Hash1_a, Hash1_c));
Assert.IsFalse(SimilarImage.CompareHashesBool(Hash1_a, Hash2));
Assert.IsFalse(SimilarImage.CompareHashesBool(Hash1_a, Hash3_a));
Assert.IsTrue(SimilarImage.CompareHashesBool(Hash3_a, Hash3_b));
Assert.IsFalse(SimilarImage.CompareHashesBool(Hash3_a, Hash2));
Assert.AreEqual(SimilarImage.CompareHashes(Hash1_a, Hash1_b), SimilarImage.CompareHashes(Hash1_b, Hash1_a));
}
virtual protected void DisplayHash(string FileName)
{
Console.Write("{0}", SimilarImage.GetCompressedImageHashAsString(new Bitmap(Image.FromFile(FileName)), Levels));
}
virtual protected void CompareHashes(string Hash1, string Hash2)
{
Console.Write("{0:0.000000}", SimilarImage.CompareHashes(Hash1, Hash2));
}
