Indicates whether an image RenderedImage is a grayscale image. - Java 2D Graphics

Java examples for 2D Graphics:BufferedImage Scale

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Description

Indicates whether an image RenderedImage is a grayscale image.

Demo Code

/*/*from  ww w .ja  va 2 s .co  m*/
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
//package com.java2s;

import java.awt.image.RenderedImage;

public class Main {
    /**
     * Indicates whether an image is a grayscale image.
     * 
     * @param img
     *            the image
     * @return true if it's a grayscale image
     */
    public static boolean isGrayscaleImage(final RenderedImage img) {
        return img.getColorModel().getColorSpace().getNumComponents() == 1;
    }
}

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