单色位图均值滤波MFC代码实现

以下是单色位图均值滤波MFC代码实现的示例：

void CImageProcessingDlg::OnBnClickedButtonMeanFilter()
{
    // 获取图像数据
    BITMAP bm;
    m_Image.GetBitmap(&bm);
    int width = bm.bmWidth;
    int height = bm.bmHeight;
    int size = width * height;
    BYTE* pSrc = new BYTE[size];
    BYTE* pDst = new BYTE[size];
    m_Image.GetBitmapBits(size, pSrc);

    // 定义滤波器大小和半径
    int filterSize = 3;
    int filterRadius = filterSize / 2;

    // 滤波器权值
    double* filter = new double[filterSize * filterSize];
    for (int i = 0; i < filterSize * filterSize; i++)
    {
        filter[i] = 1.0 / (filterSize * filterSize);
    }

    // 单色位图均值滤波
    int sum;
    for (int y = filterRadius; y < height - filterRadius; y++)
    {
        for (int x = filterRadius; x < width - filterRadius; x++)
        {
            sum = 0;
            for (int j = -filterRadius; j <= filterRadius; j++)
            {
                for (int i = -filterRadius; i <= filterRadius; i++)
                {
                    sum += pSrc[(y + j) * width + (x + i)] * filter[(j + filterRadius) * filterSize + (i + filterRadius)];
                }
            }
            pDst[y * width + x] = (BYTE)sum;
        }
    }

    // 更新图像数据
    m_Image.SetBitmapBits(size, pDst);

    // 显示处理后的图像
    CWnd* pWnd = GetDlgItem(IDC_STATIC_IMAGE);
    CDC* pDC = pWnd->GetDC();
    CDC dc;
    dc.CreateCompatibleDC(pDC);
    CBitmap* pOldBitmap = dc.SelectObject(&m_Image);
    pDC->BitBlt(0, 0, width, height, &dc, 0, 0, SRCCOPY);
    dc.SelectObject(pOldBitmap);
    ReleaseDC(pDC);
    delete[] pSrc;
    delete[] pDst;
    delete[] filter;
}

该代码首先获取图像数据，然后定义滤波器大小和半径以及滤波器权值。接下来进行单色位图均值滤波，计算每个像素周围滤波器范围内像素的平均值，然后将平均值赋给该像素。最后更新图像数据并显示处理后的图像。