001/* 002Copyright 2006 Jerry Huxtable 003 004Licensed under the Apache License, Version 2.0 (the "License"); 005you may not use this file except in compliance with the License. 006You may obtain a copy of the License at 007 008 http://www.apache.org/licenses/LICENSE-2.0 009 010Unless required by applicable law or agreed to in writing, software 011distributed under the License is distributed on an "AS IS" BASIS, 012WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013See the License for the specific language governing permissions and 014limitations under the License. 015*/ 016 017package com.jhlabs.image; 018 019import java.awt.image.*; 020 021/** 022 * A filter which performs a simple 3x3 sharpening operation. 023 */ 024public class SharpenFilter extends ConvolveFilter { 025 026 private static float[] sharpenMatrix = { 027 0.0f, -0.2f, 0.0f, 028 -0.2f, 1.8f, -0.2f, 029 0.0f, -0.2f, 0.0f 030 }; 031 032 public SharpenFilter() { 033 super(sharpenMatrix); 034 } 035 036 public String toString() { 037 return "Blur/Sharpen"; 038 } 039}