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<TITLE>Brightening or Darkening an RGB Buffered Image (Java Developers Almanac Example)
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  <h3>e680. Brightening or Darkening an RGB Buffered Image</h3>

This example demonstrates how to brighten or darken an RGB
buffered image by scaling the red, green, and blue values
in the image.


<pre>    // To create a buffered image, see <a href="../java.awt.image/CreateBuf.html" class="eglink"><b>e666</b> Creating a Buffered Image</a>
    
    // Brighten the image by 30%
    float scaleFactor = <font color="#0066ff"><i>1.3f</i></font>;
    RescaleOp op = new RescaleOp(scaleFactor, 0, null);
    <font color="#0066ff"><i>bufferedImage</i></font> = op.filter(<font color="#0066ff"><i>bufferedImage</i></font>, null);
    
    // Darken the image by 10%
    scaleFactor = <font color="#0066ff"><i>.9f</i></font>;
    op = new RescaleOp(scaleFactor, 0, null);
    <font color="#0066ff"><i>bufferedImage</i></font> = op.filter(<font color="#0066ff"><i>bufferedImage</i></font>, null);
</pre>
If the image is not an RGB image, the following code converts
a non-RGB image to an RGB buffered image:

<pre>    // Get non-RGB image
    Image image = new ImageIcon(<font color="#0066ff"><i>"image.gif"</i></font>).getImage();
    
    // Create an RGB buffered image
    BufferedImage bimage = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_RGB);
    
    // Copy non-RGB image to the RGB buffered image
    Graphics2D g = bimage.createGraphics();
    g.drawImage(image, 0, 0, null);
    g.dispose();
</pre>
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            &nbsp;<b>Related Examples</b></font></td>
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e675. <a class="eglink" href="Flip.html?l=rel">
    Flipping a Buffered Image
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e676. <a class="eglink" href="ToGray.html?l=rel">
    Converting a Colored Buffered Image to Gray
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e677. <a class="eglink" href="ImageConv.html?l=rel">
    Blurring a Buffered Image
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e678. <a class="eglink" href="Sharpen.html?l=rel">
    Sharpening a Buffered Image
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e679. <a class="eglink" href="Emboss.html?l=rel">
    Embossing a Buffered Image
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        See also: 
<a class="eglink" href="/egs/java.awt.image/pkg.html?l=rel#Buffered%20Images">
    Buffered Images
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/java.awt.image/pkg.html?l=rel#Images">
    Images
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/java.awt.image/pkg.html?l=rel#Volatile%20Images">
    Volatile Images
</a>&nbsp;&nbsp;

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