Clean some stuff

src/main/java/services/UseCaseService.java

@@ -10,10 +10,15 @@ import java.util.function.Supplier;
 public class UseCaseService {
 
     public Image reduceNoise(Image i0) {
+
+        double cutoff = 0.7 * getMaxCutoff(i0.getWidth(), i0.getHeight());
+
         GrayScaleMatrix m0 = i0.toGrayScale();
-        GrayScaleMatrix m1 = GlobalLinearFiltering.butterworthLowPassFiltering(m0, 10, 1);
+
+        GrayScaleMatrix m1 = measureTime("Butterworth low pass", () -> GlobalLinearFiltering.butterworthLowPassFiltering(m0, cutoff, 1));
         Image i1 = m1.toImage();
-        return ComplexMorphology.medianFilter(i1, 9).toImage();
+
+        return measureTime("Median filter", () -> ComplexMorphology.medianFilter(i1, 5).toImage());
     }
 
     public Image[] equalizeHistogram(Image image) {
@@ -88,10 +93,19 @@ public class UseCaseService {
         return image;
     }
 
-    public <T> long measureTime(Supplier<T> operation) {
+    public <T> T measureTime(String name, Supplier<T> operation) {
         long start = System.nanoTime();
-        operation.get();
-        return (System.nanoTime() - start) / 1_000_000;
+
+        T result = operation.get();
+
+        long elapsed = (System.nanoTime() - start) / 1_000_000;
+        System.out.println(name + " took " + elapsed + " ms");
+
+        return result;
+    }
+
+    private double getMaxCutoff(int width, int height) {
+        return Math.sqrt(Math.pow(width / 2.0, 2) + Math.pow(height / 2.0, 2));
     }
 
 }