Update output and readme.

Author: Kabuto_W

README.md

@@ -1,11 +1,11 @@
 # ImageSimilarityDetection-UI
-Find similar images in the directory by aHash/dHash/pHash.
+Find similar images in serveral directory by aHash/dHash/pHash.
 
 ## Supported formats
-.jpg; .jpeg; .png
+.jpg; .jpeg; .png; .bmp
 
 ## Purpose 
-Reduce duplication in an image folder.
+Reduce duplication in image folders.
 
 ## Principle
 1. Implement aHash, dHash, pHash to generate the fingerprint of images.

SimilarImages/SimilarImages/ImageHash.cs

@@ -83,7 +83,7 @@ public static List<Tuple<string, string, double>> GetSimilarity(
             Debug.WriteLine($"GetHash: {hashTime}ms; CompareHash: {compareTime}ms");
 
             // Sort by similarity
-            return tuples.OrderByDescending(u => u.Item3).ToList();
+            return tuples.OrderByDescending(u => u.Item3).ToList(); // TODO: seldom u=null.
         }
 
         public enum HashEnum
@@ -124,7 +124,10 @@ where imageExtensions.Contains(file.Extension)
 
             // Get hashes
             var imageHashPairs = new ConcurrentDictionary<string, string>();
-            Parallel.ForEach(imageNames, imageName =>
+            Parallel.ForEach(imageNames,
+                // TODO: Add performance limitation option 
+                //new ParallelOptions { MaxDegreeOfParallelism = Convert.ToInt32(Math.Ceiling((Environment.ProcessorCount * 0.5) * 1.0)) },
+                imageName =>
             {
                 string hash = hashMethod(imageName);
                 if (!string.IsNullOrEmpty(hash))
@@ -272,6 +275,8 @@ private static string GetPerceptualHash(string filename)
                     g.DrawImage(originalBmp, 0, 0, bmp.Width, bmp.Height);
                 }
 
+                originalBmp.Dispose();
+
                 watch.Stop();
                 resizeImageTime = watch.ElapsedMilliseconds;
                 watch.Restart();
@@ -299,8 +304,6 @@ private static string GetPerceptualHash(string filename)
             long imageMatrixTime = watch.ElapsedMilliseconds;
             //Debug.WriteLine($"Original: {originalBmpTime,3}ms; Resize: {resizeImageTime,3}ms; Matrix: {imageMatrixTime}ms");
 
-            originalBmp.Dispose();
-
             // Get mean gray
             grayMean = graySum / height / width;
 

SimilarImages/SimilarImages/Properties/AssemblyInfo.cs

@@ -10,7 +10,7 @@
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("")]
 [assembly: AssemblyProduct("SimilarImages")]
-[assembly: AssemblyCopyright("Copyright ©  2020")]
+[assembly: AssemblyCopyright("Copyright © Roy0309 2021")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
@@ -32,5 +32,5 @@
 //可以指定所有这些值，也可以使用“生成号”和“修订号”的默认值
 //通过使用 "*"，如下所示:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.2.0.0")]
-[assembly: AssemblyFileVersion("1.2.0.0")]
+[assembly: AssemblyVersion("1.3.0.0")]
+[assembly: AssemblyFileVersion("1.3.0.0")]