# Laplacian Filter

(c) 2003 by A. Ringeler, (c) 2008 by O. Conrad
Other Common Names: Laplacian, Laplacian of Gaussian, LoG, Marr Filter
Standard kernel 1 (3x3):
0 | -1 | 0
-- + -- + --
-1 | 4 | -1
-- + -- + --
0 | -1 | 0
Standard kernel 2 (3x3):
-1 | -1 | -1
-- + -- + --
-1 | 8 | -1
-- + -- + --
-1 | -1 | -1
Standard kernel 3 (3x3):
-1 | -2 | -1
-- + -- + --
-2 | 12 | -2
-- + -- + --
-1 | -2 | -1

## Parameters

Grid system
Grid system
  Grid system
Grid
Input Grid
Filtered Grid
Output Grid
Method
Choice
  Available choices: standard kernel 1, standard kernel 2, Standard kernel 3, user defined kernel
User Defined Kernel
Node
Standard Deviation (Percent of Radius)
Floating point
  Minimum: 1e-05
Radius
Integer
  Minimum: 1.0
Search Mode
Choice
  Available choices: square, circle