Update

Code/plugins/Kantenschaerfung_2018_11_07.java

@@ -0,0 +1,38 @@
+import ij.*;
+import ij.process.*;
+import ij.gui.*;
+import java.awt.*;
+import ij.plugin.filter.*;
+
+public class Kantenschaerfung_2018_11_07 implements PlugInFilter {
+  ImagePlus imp;
+
+  public int setup(String arg, ImagePlus imp) {
+    this.imp = imp;
+    return DOES_ALL;
+  }
+
+  public void run(ImageProcessor ip) {
+    int width = ip.getWidth();
+    int height = ip.getHeight();
+    
+    ImageProcessor copy = ip.duplicate();
+    
+    int[][] L ={{1,1,1},{1,-8,1},{1,1,1}};
+    
+    for(int m = 1; m < width - 1; m++) {
+      for(int n = 1; n < height - 1; n++) {
+        int p = 0;
+        for(int i = -1; i <= 1; i++) {
+          for(int j = -1; j <= 1; j++) {  
+            int I = copy.getPixel(m-i,n-j);
+            p += I * L[i+1][j+1];
+          }
+        }
+        p = copy.getPixel(m,n) - (int) (p * 0.5);
+        ip.putPixel(m,n,p);      
+      }  
+    }
+  }
+
+}

Code/plugins/Laplace_2018_11_07.java

@@ -0,0 +1,38 @@
+import ij.*;
+import ij.process.*;
+import ij.gui.*;
+import java.awt.*;
+import ij.plugin.filter.*;
+
+public class Laplace_2018_11_07 implements PlugInFilter {
+  ImagePlus imp;
+
+  public int setup(String arg, ImagePlus imp) {
+    this.imp = imp;
+    return DOES_ALL;
+  }
+
+  public void run(ImageProcessor ip) {
+    int width = ip.getWidth();
+    int height = ip.getHeight();
+    
+    ImageProcessor copy = ip.duplicate();
+    
+    int[][] L ={{1,1,1},{1,-8,1},{1,1,1}};
+    
+    for(int m = 1; m < width - 1; m++) {
+      for(int n = 1; n < height - 1; n++) {
+        int p = 0;
+        for(int i = -1; i <= 1; i++) {
+          for(int j = -1; j <= 1; j++) {  
+            int I = copy.getPixel(m-i,n-j);
+            p += I * L[i+1][j+1];
+          }
+        }
+        p = p*10 + 128; // Irgendein Faktor
+        ip.putPixel(m,n,p);      
+      }  
+    }
+  }
+
+}

Code/plugins/Sobel_2018_10_31.java

@@ -0,0 +1,35 @@
+import ij.*;
+import ij.process.*;
+import ij.gui.*;
+import java.awt.*;
+import ij.plugin.filter.*;
+
+public class Sobel_2018_10_31 implements PlugInFilter {
+  ImagePlus imp;
+
+  public int setup(String arg, ImagePlus imp) {
+    this.imp = imp;
+    return DOES_ALL;
+  }
+
+  public void run(ImageProcessor ip) {
+    int width = ip.getWidth();
+    int height = ip.getHeight();
+    ImageProcessor copy = ip.duplicate();
+    int[][] H ={{1,0,-1},{2,0,-2},{1,0,-1}};
+    
+    for(int v = 1; v <= height-2; v++) {
+      for(int u = 1; u <= width-2; u++) {
+        int k = 0;
+        for(int j =-1; j <= 1; j++) {
+          for(int i =-1; j <= 1; j++) {  
+            int I = copy.getPixel(u-i,v-j);
+            k = k + I * H[i+1][j+1];
+          }
+        }
+        ip.putPixel(u,v,k);      
+      }  
+    }
+  }
+
+}

Code/plugins/readme.txt

@@ -1 +0,0 @@
-User plugins go here.