这里是原始图像:http://rank.my/public/images/uploaded/orig-4193395691714613396.png为什么在Java中缩小后图像看起来很糟糕?
这里,它被缩小为300x225:
http://rank.my/public/images/uploaded/norm-4193395691714613396.png
这里,它被缩小到150x112:
http://rank.my/public/images/uploaded/small-4193395691714613396.png
由于你可以看到,300x225看起来很糟糕,而150x112看起来很糟糕。这里是我用来缩小图像的代码:
private static BufferedImage createResizedCopy(final BufferedImage source, final int destWidth,
final int destHeight) {
final BufferedImage resized = new BufferedImage(destWidth, destHeight, source.getType());
final Graphics2D bg = resized.createGraphics();
bg.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
bg.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
bg.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
final float sx = (float) destWidth/source.getWidth();
final float sy = (float) destHeight/source.getHeight();
bg.scale(sx, sy);
bg.drawImage(source, 0, 0, null);
bg.dispose();
return resized;
}
我在做什么错在这里?图像缩放不一定要特别快,质量绝对是速度优先。我使用错误的技术?
@MusiGenesis:我认为你的答案被删除是优秀的,我希望你能取消删除。 – 2011-02-11 04:06:12
链接已死,请用imgur或其他类似主机:) – alex 2012-08-21 05:13:43
链接已备份 - 对不起 – sanity 2012-08-23 16:42:33