public void RecalculateHashes(Action <int> progress)
{
int count = imagesDict.Count * 2;
int index = 0;
foreach (Image image in imagesDict.Select(x => x.Value))
{
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(image.path);
image.hash = DHash.Calculate(bmp);
bmp.Dispose();
++index;
progress((int)(100.0f * index / count));
}
foreach (Image image in imagesDict.Select(x => x.Value))
{
foreach (Image image2 in imagesDict.Select(x => x.Value))
{
if (image != image2)
{
int dist = DHash.Distance(image.hash, image2.hash);
if (dist < DHash.Margin && !duplicates.Any(x => x.image1 == image2 && x.image2 == image))
{
duplicates.Add(new Duplicate
{
image1 = image,
image2 = image2,
dist = dist
});
}
}
}
++index;
progress((int)(100.0f * index / count));
}
}
public void Scan(Action <int> progress)
{
missing.Clear();
exactDuplicates.Clear();
foreach (KeyValuePair <string, Image> kvp in imagesDict)
{
kvp.Value.found = false;
}
// scan for new files, mark existing
string[] files = Directory.GetFiles(path);
List <string> newFiles = new List <string>();
foreach (string file in files)
{
string filename = Path.GetFileName(file);
string ext = Path.GetExtension(file);
if (!excludedExt.Contains(ext))
{
if (imagesDict.TryGetValue(filename, out Image image))
{
image.found = true;
}
else
{
newFiles.Add(filename);
}
}
}
// add new files, check for duplicates
if (newFiles.Count != 0)
{
int index = 0;
foreach (string newFile in newFiles)
{
Image image = new Image
{
Filename = newFile,
path = $"{path}\\{newFile}",
found = true
};
System.Drawing.Bitmap bmp = ImageLoader.Load(image.path);
image.hash = DHash.Calculate(bmp);
image.width = bmp.Width;
image.height = bmp.Height;
image.size = new FileInfo(image.path).Length;
bmp.Dispose();
foreach (Image image2 in imagesDict.Select(x => x.Value).Where(x => x.found))
{
int dist = DHash.Distance(image.hash, image2.hash);
if (dist == 0 && image.size == image2.size && image.ResolutionValue == image2.ResolutionValue)
{
// exact duplicate, autodelete
exactDuplicates.Add(image.path);
image = null;
break;
}
else if (dist < DHash.Margin && !duplicates.Any(x => x.image1 == image2 && x.image2 == image))
{
duplicates.Add(new Duplicate
{
image1 = image,
image2 = image2,
dist = dist
});
}
}
if (image != null)
{
imagesDict[newFile] = image;
newImages.Add(image);
}
++index;
progress(100 * index / newFiles.Count);
}
}
missing.AddRange(imagesDict.Select(x => x.Value).Where(x => !x.found));
}