我似乎无法让bufferedimage的.setRGB正常工作:
BufferedImage img = null;
try
{
img = ImageIO.read(new File("icons/br.jpeg"));
}
catch (IOException e)
{
}
for(int x = img.getWidth()-1; x >= 0; x--)
{
for(int y = img.getHeight()-1; y >= 0; y--)
{
Color b = new Color(255, 255, 255);
img.setRGB(x, y, b.getRGB());
}
}
//Save New Image
File outputfile = new File("icons/newestSave.jpeg");
ImageIO.write(img, "jpeg", outputfile);
这是br.jpeg:http://i.imgur.com/w1dZogA.png
这就是结果:http://i.imgur.com/MVIxiA7.jpg
输出应为纯白色,因为程序应将每个像素更改为255,255,255。
答案 0 :(得分:0)
您的源图片类型为TYPE_BYTE_INDEXED(使用img.getType()来显示类型),您需要将图像保存为类型:TYPE_3BYTE_BGR
BufferedImage i = null;
BufferedImage img = null;
try
{
i = ImageIO.read(new File("icons/br.jpeg"));
img = new BufferedImage(i.getWidth(),i.getHeight(), BufferedImage.TYPE_3BYTE_BGR);
}
catch (IOException e)
{
}
//copy the image
img.getGraphics().drawImage(i, 0, 0, null);
for(int x = img.getWidth()-1; x >= 0; x--)
{
for(int y = img.getHeight()-1; y >= 0; y--)
{
Color b = new Color(255, 255, 255);
img.setRGB(x, y, b.getRGB());
}
}
//Save New Image
File outputfile = new File("icons/newestSave.jpeg");
ImageIO.write(img, "jpeg", outputfile);