1117

2025-11-17 10:32:51 +08:00
parent 727d52416d
commit 503b4a59f0
6 changed files with 619 additions and 61 deletions
@@ -0,0 +1,37 @@
+namespace DigitalImageProcessing
+{
+    internal static class Segmentation
+    {
+        public static void Run()
+        {
+            int thresholdValue = 128;
+            int thresholdDelta = 5;
+
+            float delta = float.MaxValue;
+            int loopCount = 0;
+
+            int[,] grayImage = GLobalTools.GetGrayAsArray(@"C:\Users\Surface\Downloads\OIP.webp");
+
+            while (delta > thresholdDelta)
+            {
+                loopCount++;
+                List<int> forePix = [], backPix = [];
+                for (int i = 0; i < grayImage.GetLength(0); i++)
+                    for (int j = 0; j < grayImage.GetLength(1); j++)
+                        if (grayImage[i, j] >= thresholdValue)
+                            forePix.Add(grayImage[i, j]);
+                        else
+                            backPix.Add(grayImage[i, j]);
+                int fore = (int)forePix.Average();
+                int back = (int)backPix.Average();
+                int thres = (fore + back) / 2;
+                delta = int.Abs(thres - thresholdValue);
+                thresholdValue = thres;
+                Console.WriteLine($"Current Threshold Value: {thres}, Delta: {delta}");
+            }
+            Console.WriteLine($"Final Threshold Value: {thresholdValue} found in {loopCount} loops.");
+            int[,] foreground = grayImage.Select(i => i > thresholdValue ? 255 : 0);
+            foreground.Save(@"C:\Users\Surface\Downloads\OIP_foreground.webp");
+        }
+    }
+}