added luma threshould

SDFMapCreator/Program.cs

@@ -63,7 +63,6 @@ public static class Program {
             ConsoleUpdateLine($"Creating mask {i}...");
             var mask = GetABMask(Images[i].Pixels, Images[i + 1].Pixels);
             TransitionMasks.Add(new(mask, Images[i], Images[i + 1]));
-            if (debug) mask.SaveImage($"Debug/mask{i}.png");
         }
 
         //EdgeDetect all masks
@@ -182,6 +181,25 @@ public static class Program {
         sw.Start();
         kernels.Sdf(mask.Edges.ToArray(), (int)width, (int)height, out var temp);
         Console.WriteLine($"\nSDF Generation Time: {sw.Elapsed.TotalSeconds:N4}s ({width * height / sw.Elapsed.TotalSeconds:N0} pixels/s)");
+        
+        sw.Restart();
+        var absMax = 0f;
+        foreach (var pixel in temp) {
+            if (pixel.X > absMax) absMax = pixel.X;
+        }
+        
+        Parallel.For(0, width * height, parallelOptions, (i) =>
+        {
+            //convert 1D index to 2D index
+            var x = (int)(i % width);
+            var y = (int)(i / width);
+            temp[x, y] = new(Remap(temp[x, y].X, 0, absMax, MIN, MAX));
+        });
+        sw.Stop();
+
+        Console.WriteLine(
+            $"SDF Normalization Time: {sw.Elapsed.TotalSeconds:N4}s ({width*height / sw.Elapsed.TotalSeconds:N0} pixels/s)");
+        
         return new(temp);
     }
 

SDFMapCreator/SdfKernels.Kernels.cs

@@ -5,12 +5,14 @@ using ILGPU.Runtime;
 namespace SDFMapCreator;
 
 public partial class SdfKernels {
+    
+    private const float LUMA_THRESHOLD = 0.0f;
     static void SelfMaskKernel(Index2D index, ArrayView2D<Vector3, Stride2D.DenseX> input, ArrayView2D<Vector3, Stride2D.DenseX> mask) {
         var x = index.X;
         var y = index.Y;
         var value = input[x, y];
-        var lumaA = (value.X + value.Y + value.Z) / 3f;
-        var r = lumaA > 0.99f ? 1f : 0f;
+        var lumaA = value.X;
+        var r = lumaA > LUMA_THRESHOLD ? 1f : 0f;
         mask[x, y] = new(r, 0f, 0f);
     }
 
@@ -23,9 +25,9 @@ public partial class SdfKernels {
         var y = index.Y;
         var valueA = A[x, y];
         var valueB = B[x, y];
-        var lumaA = (valueA.X + valueA.Y + valueA.Z) / 3f;
-        var lumaB = (valueB.X + valueB.Y + valueB.Z) / 3f;
-        var r = lumaA > 0.99f && lumaB > 0.99f ? 1f : 0f;
+        var lumaA = valueA.X;
+        var lumaB = valueB.X;
+        var r = lumaA > LUMA_THRESHOLD || lumaB > LUMA_THRESHOLD ? 1f : 0f;
         mask[x, y] = new(r, 0f, 0f);
     }