Bufferedimage调整大小 [英] Bufferedimage resize

问题描述

我正在尝试调整缓冲图像的大小。我能够存储它并在jframe上显示没有问题，但我似乎无法调整大小。有关如何更改此功能以使其工作并将图像显示为200 * 200文件的任何提示都会很棒

I am trying to resized a bufferedimage. I am able to store it and show up on a jframe no problems but I can't seem to resize it. Any tips on how I can change this to make it work and show the image as a 200*200 file would be great

private void profPic(){
    String path = factory.getString("bottle");
    BufferedImage img = ImageIO.read(new File(path));
}


public static BufferedImage resize(BufferedImage img, int newW, int newH) {  
    int w = img.getWidth();  
    int h = img.getHeight();  
    BufferedImage dimg = new BufferedImage(newW, newH, img.getType());  
    Graphics2D g = dimg.createGraphics();  
    g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
    RenderingHints.VALUE_INTERPOLATION_BILINEAR);  
    g.drawImage(img, 0, 0, newW, newH, 0, 0, w, h, null);  
    g.dispose();  
    return dimg;  
}  

推荐答案

更新回答

我不记得为什么我的原始答案有效但我已经在一个单独的环境中对它进行了测试，我同意，原来接受的答案不起作用（为什么我说它确实我也记不起来了）。另一方面，这确实有效：

I cannot recall why my original answer worked but having tested it in a separate environment, I agree, the original accepted answer doesn't work (why I said it did I cannot remember either). This, on the other hand, did work:

public static BufferedImage resize(BufferedImage img, int newW, int newH) { 
    Image tmp = img.getScaledInstance(newW, newH, Image.SCALE_SMOOTH);
    BufferedImage dimg = new BufferedImage(newW, newH, BufferedImage.TYPE_INT_ARGB);

    Graphics2D g2d = dimg.createGraphics();
    g2d.drawImage(tmp, 0, 0, null);
    g2d.dispose();

    return dimg;
}  

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