如何用C#从二维码BMP图片提取黑白像素二维数组？

需要编写C#程序读取BMP二维码图片，将其转换为1表示黑色像素、0表示白色像素的二维数组，期望输出格式如下：

{
    {1,1,1,1,1,1,1,0,0,0,1,0,1,0,1,1,1,1,1,1,1},
    {1,0,0,0,0,0,1,0,1,0,1,0,1,0,1,0,0,0,0,0,1},
    {1,0,1,1,1,0,1,0,1,0,1,1,0,0,1,0,1,1,1,0,1},
    {1,0,1,1,1,0,1,0,0,0,0,0,1,0,1,0,1,1,1,0,1},
    {1,0,1,1,1,0,1,0,1,1,1,1,1,0,1,0,1,1,1,0,1},
    {1,0,0,0,0,0,1,0,1,1,1,0,0,0,1,0,0,0,0,0,1},
    {1,1,1,1,1,1,1,0,1,0,1,0,1,0,1,1,1,1,1,1,1},
    {0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0},
    {1,1,0,1,0,0,1,1,0,0,1,1,1,0,1,1,1,0,1,1,0},
    {1,1,1,1,1,1,0,0,1,0,0,1,0,1,0,1,0,1,1,1,1},
    {0,1,1,0,0,0,1,1,0,1,1,1,0,0,1,1,1,1,1,0,1},
    {1,0,0,1,1,0,0,0,0,0,1,0,1,1,1,1,1,0,0,1,1},
    {0,1,1,0,1,1,1,1,0,0,1,1,0,1,1,1,0,0,1,0,0},
    {0,0,0,0,0,0,0,0,1,1,0,0,0,1,1,0,1,0,1,0,0},
    {1,1,1,1,1,1,1,0,1,1,0,1,1,0,1,0,1,1,0,1,0},
    {1,0,0,0,0,0,1,0,0,1,1,0,0,0,1,0,0,0,1,1,1},
    {1,0,1,1,1,0,1,0,0,0,0,0,1,1,1,0,0,0,1,1,1},
    {1,0,1,1,1,0,1,0,1,0,0,0,0,1,1,1,0,0,0,1,1},
    {1,0,1,1,1,0,1,0,0,1,1,1,0,1,1,1,0,1,1,0,1},
    {1,0,0,0,0,0,1,0,1,0,1,1,1,0,0,1,0,1,0,0,0},
    {1,1,1,1,1,1,1,0,1,0,1,0,0,1,0,1,0,0,1,1,0}
}

现有代码（仅实现文本解码） #

目前已使用ZXing库的MultiFormatReader实现二维码文本解码，但无法获取目标二维数组，代码片段如下：

Bitmap originalBitmap = new Bitmap(pathOfBmp);

LuminanceSource source;
source = new BitmapLuminanceSource(originalBitmap);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
Result result = new MultiFormatReader().decode(bitmap);

Console.WriteLine(result.Text);

解决方案：获取二值化像素矩阵并转换为目标格式 #

你可以直接通过ZXing的BinaryBitmap对象获取二值化后的像素数据，无需额外处理原始Bitmap。以下是完整实现代码：

using System;
using System.Drawing;
using ZXing;
using ZXing.Common;

class Program
{
    static void Main(string[] args)
    {
        string pathOfBmp = "your_qr_code.bmp";
        Bitmap originalBitmap = new Bitmap(pathOfBmp);

        // 生成二值化Bitmap（复用你已有的代码）
        LuminanceSource source = new BitmapLuminanceSource(originalBitmap);
        BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(source));

        // 获取二维码的宽高
        int width = binaryBitmap.Width;
        int height = binaryBitmap.Height;

        // 初始化二维数组
        int[,] pixelArray = new int[height, width];

        // 遍历每个像素，转换为1（黑）或0（白）
        for (int y = 0; y < height; y++)
        {
            for (int x = 0; x < width; x++)
            {
                // ZXing中getPixel返回true表示黑色像素
                pixelArray[y, x] = binaryBitmap.GetPixel(x, y) ? 1 : 0;
            }
        }

        // 按照期望格式输出二维数组
        Console.WriteLine("{");
        for (int y = 0; y < height; y++)
        {
            Console.Write("    {");
            for (int x = 0; x < width; x++)
            {
                Console.Write(pixelArray[y, x]);
                if (x != width - 1)
                {
                    Console.Write(",");
                }
            }
            Console.Write("}");
            if (y != height - 1)
            {
                Console.Write(",");
            }
            Console.WriteLine();
        }
        Console.WriteLine("}");
    }
}

关键说明 #

• binaryBitmap.GetPixel(x, y)：返回true代表当前坐标为黑色像素，直接转换为1；false代表白色像素，转换为0。
• 坐标遍历顺序：y从0到height-1对应图片的从上到下，x从0到width-1对应图片的从左到右，与常规图片像素坐标一致。
• 输出格式严格匹配你给出的示例，每行数组前添加4个空格，元素用逗号分隔，最后闭合大括号。

内容的提问来源于stack exchange，提问作者AgileFever