3

我正在使用 RenderedImage 在我的应用程序的 DisplayJAI 中显示 tiff。

有人知道如何调整 RenderedImage 实例的大小吗?

4

3 回答 3

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public static RenderedImage scale(RenderedImage image, float scaleFactor)
    RenderingHints hints = new RenderingHints(RenderingHints.KEY_RENDERING,
      RenderingHints.VALUE_RENDER_QUALITY);

    RenderedOp resizeOp = SubsampleAverageDescriptor.create(image,
      Double.valueOf(scaleFactor), Double.valueOf(scaleFactor), hints);

    BufferedImage bufferedResizedImage = resizeOp.getAsBufferedImage();

    return bufferedResizedImage;
}
于 2011-09-30T13:07:27.303 回答
3

我已经很久没有对 JAI 做过任何事情了,但是“Scale”“Affine”操作还不够吗?

编辑:这里有几个“Scale”“Affine”程序员指南的链接。

于 2011-01-04T15:11:02.980 回答
-1

此处发布了一个示例代码: http ://answers.yahoo.com/question/index?qid=20090827075608AA12kEZ

相关代码:

BufferedImage img = ImageIO.read(new File("~/your/file/system/example.jpeg"));
BufferedImage thumb = new BufferedImage(w2, h2, BufferedImage.TYPE_INT_RGB);
thumb.createGraphics().drawImage(
img.getScaledInstance(w2, h2, java.awt.Image.SCALE_SMOOTH), 0, 0, null);
File file = new File(fullpath + filename);
ImageIO.write(thumb, "png", file);
于 2011-01-04T12:46:40.190 回答