Add convolution and mean filtering

src/main/java/services/GlobalFilteringService.java

@@ -4,7 +4,7 @@ import domain.image.GrayScaleMatrix;
 import domain.image.Image;
 import domain.image.processing.filtering.GlobalLinearFiltering;
 
-public class FilteringService {
+public class GlobalFilteringService {
 
     public Image lowPassFiltering(GrayScaleMatrix matrix, double percentage) {
         double cutoff = percentage * getMaxCutoff(matrix.getWidth(), matrix.getHeight());

src/main/java/services/LocalFilteringService.java

@@ -0,0 +1,23 @@
+package services;
+
+import domain.image.GrayScaleMatrix;
+import domain.image.Image;
+import domain.image.processing.filtering.LocalLinearFiltering;
+
+public class LocalFilteringService {
+
+    public Image applyConvolutionMask(Image image, double[][] mask) {
+        GrayScaleMatrix result = LocalLinearFiltering.convolutionMask(getGrayScale(image), mask);
+        return result.toImage();
+    }
+
+    public Image applyMeanFilter(Image image, int maskSize) {
+        GrayScaleMatrix result = LocalLinearFiltering.meanFilter(getGrayScale(image), maskSize);
+        return result.toImage();
+    }
+
+    private GrayScaleMatrix getGrayScale(Image image) {
+        return image.toGrayScale();
+    }
+
+}