Java 对图像进行90度旋转

2015/02/26 40966

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public BufferedImage rotate90DX(BufferedImage bi)
{
    int width = bi.getWidth();
    int height = bi.getHeight();
      
    BufferedImage biFlip = new BufferedImage(height, width, bi.getType());
      
    for(int i=0; i<width; i++)
        for(int j=0; j<height; j++)
            biFlip.setRGB(height-1-j, width-1-i, bi.getRGB(i, j));
      
    return biFlip;
}
 
 
public BufferedImage rotate90SX(BufferedImage bi)
{
    int width = bi.getWidth();
    int height = bi.getHeight();
      
    BufferedImage biFlip = new BufferedImage(height, width, bi.getType());
      
    for(int i=0; i<width; i++)
        for(int j=0; j<height; j++)
            biFlip.setRGB(j, i, bi.getRGB(i, j));
      
    return biFlip;
}