Java的我怎么会加载一个黑白图像转换成二进制？ [英] Java- How would I load a black and white image into binary?

问题描述

我使用Java在FSE模式展开。我想加载一个全黑与白的图像转换成二进制格式（二维数组preferably），并用它基于掩模的每个像素的碰撞检测。我甚至不知道从哪里这里开始，我已经研究了几个小时，也没有找到任何有关。

I am using Java with swing in FSE mode. I want to load a completely black-and-white image into binary format (a 2d array preferably) and use it for mask-based per-pixel collision detection. I don't even know where to start here, I've been researching for the past hour and haven't found anything relevant.

推荐答案

刚刚读入的 的BufferedImage 使用<一个href=\"http://download.oracle.com/javase/6/docs/api/javax/imageio/ImageIO.html#read%28java.io.File%29\"相对=nofollow> 的ImageIO＃阅读（） 和获取单个像素<一个href=\"http://download.oracle.com/javase/6/docs/api/java/awt/image/BufferedImage.html#getRGB%28int,%20int%29\"相对=nofollow> 的BufferedImage＃的getRGB（） 。 0xFFFFFFFF的的值是白色，残存的颜色。假设你要重新present白色作为字节 0 和颜色（黑色）作为字节 1 ，这里的开球例如：

Just read it into a BufferedImage using ImageIO#read() and get the individual pixels by BufferedImage#getRGB(). A value of 0xFFFFFFFF is white and the remnant is color. Assuming that you want to represent white as byte 0 and color (black) as byte 1, here's a kickoff example:

BufferedImage image = ImageIO.read(new File("/some.jpg"));
byte[][] pixels = new byte[image.getWidth()][];

for (int x = 0; x < image.getWidth(); x++) {
    pixels[x] = new byte[image.getHeight()];

    for (int y = 0; y < image.getHeight(); y++) {
        pixels[x][y] = (byte) (image.getRGB(x, y) == 0xFFFFFFFF ? 0 : 1);
    }
}

参见：

• Java教程 - 2D图形 - 与图像工作



See also:

• The Java Tutorials - 2D Graphics - Working with images

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