Question

我目前正在使用http://code.google.com/p/java-image-scaling/这个库来为我的网络应用生成缩放图像。但是当我将图像缩小到大约100x100大小时，在某些图像中可以看到一些剩余的工件。这是抗锯齿的问题吗？我如何在这个库中使用抗锯齿.api文档没有说明任何事情。

这是代码

File f = new File("C:\\Users\\ad min\\Pictures\\30-whisky-3d-wallpaper-1152x864.jpg");
        BufferedImage src = ImageIO.read(f);

        //ResampleOp resampleOp = new ResampleOp(76, 76);
        ResampleOp resampleOp = new ResampleOp(200,200);
        resampleOp.setUnsharpenMask(AdvancedResizeOp.UnsharpenMask.VerySharp);
        BufferedImage rescaled = resampleOp.filter(src, null);

        ImageIO.write(rescaled, "JPG", new File(
                "C:\\Users\\ad min\\Pictures\\scaleddown.jpg"));

我做错了什么？

Answer 1

我终于不需要抗锯齿了我只是在下面的链接中使用了这个代码并且它工作了:) whewww

http://www.universalwebservices.net/web-programming-resources/java/adjust-jpeg-image-

compression-quality-when-saving-images-in-java
        Iterator<ImageWriter> iter = ImageIO
                .getImageWritersByFormatName("jpeg");
        ImageWriter writer = (ImageWriter) iter.next();
        // instantiate an ImageWriteParam object with default compression
        // options
        ImageWriteParam iwp = writer.getDefaultWriteParam();
        iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        iwp.setCompressionQuality(1); // an integer between 0 and 1
        // 1 specifies minimum compression and maximum quality
        File file = new File("C:\\Users\\ad min\\Pictures\\scaleddown.jpg");
        FileImageOutputStream output = new FileImageOutputStream(file);
        writer.setOutput(output);
        IIOImage image = new IIOImage(rescaled, null, null);
        writer.write(null, image, iwp);
        writer.dispose();

java图像缩放库中的抗锯齿

1 个答案: