java Buffered Image:检测黑色像素

import java.awt.image.BufferedImage;

public class BlackPixelDetection {
    public static void main(String[] args) {
        BufferedImage image = null; // 加载图像

        try {
            // 从文件或URL加载图像
            // image = ImageIO.read(new File("image.jpg"));
            // image = ImageIO.read(new URL("http://example.com/image.jpg"));

            int width = image.getWidth();
            int height = image.getHeight();

            // 记录黑色像素位置的列表
            List<Point> blackPixels = new ArrayList<>();

            for (int y = 0; y < height; y++) {
                for (int x = 0; x < width; x++) {
                    int rgb = image.getRGB(x, y);
                    int red = (rgb >> 16) & 0xFF;
                    int green = (rgb >> 8) & 0xFF;
                    int blue = rgb & 0xFF;

                    if (red == 0 && green == 0 && blue == 0) {
                        blackPixels.add(new Point(x, y));
                    }
                }
            }

            // 输出黑色像素位置
            for (Point pixel : blackPixels) {
                System.out.println("Black pixel at: (" + pixel.x + ", " + pixel.y + ")");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}