创建新 ImageGenerator 时出现问题

发布于 2024-12-01 19:01:46 字数 1061 浏览 0 评论 0原文

我是 OpenNI 的新手，我正在尝试创建一个简单的 ImageGenerator，它只显示纯彩色图像，比如白色，我修改了“SampleModule”，并在 UpdateData() 方法中将 *pPixel 值指定为 255。 UpdateData() 方法如下

XnStatus SampleImage::UpdateData()
{
    XnStatus nRetVal = XN_STATUS_OK;

    XnUInt8* pPixel = m_pImageMap;

    for (XnUInt y = 0; y < 300; ++y)
    {
        for (XnUInt x = 0; x < 400; ++x, ++pPixel)
        {           
            *pPixel = (XnUInt8)255;
        }
    }

    m_nFrameID++;
    m_nTimestamp += 1000000 / SUPPORTED_FPS;

    // mark that data is old
    m_bDataAvailable = FALSE;

    return (XN_STATUS_OK);
}

代码编译正常，我可以使用 nireg 注册它，但是当我尝试从模块生成的数据中读取图像像素值时，我得到了一些奇怪的值（不是我预期的 255） ,我使用以下代码来读取像素值。

const XnUInt8*    pImageMap = mImageGenerator.GetImageMap();

for (XnUInt y = 0; y < 300; ++y)
{
        for (XnUInt x = 0; x < 400; ++x, ++pImageMap)
        {
            cout << (int)*pImageMap << endl;
        }
}

而且当我运行“NiViewer”时，程序仍然说找不到图像节点，但可以找到“SampleModule”作为深度。

任何建议将不胜感激。

感谢一百万，魏浩林

原文

I'm new to the OpenNI and I'm trying to create a simple ImageGenerator that just display a pure color image, say white, I modified the “SampleModule” and in the UpdateData() method I assign the *pPixel value with 255. The UpdateData() method is as following

XnStatus SampleImage::UpdateData()
{
    XnStatus nRetVal = XN_STATUS_OK;

    XnUInt8* pPixel = m_pImageMap;

    for (XnUInt y = 0; y < 300; ++y)
    {
        for (XnUInt x = 0; x < 400; ++x, ++pPixel)
        {           
            *pPixel = (XnUInt8)255;
        }
    }

    m_nFrameID++;
    m_nTimestamp += 1000000 / SUPPORTED_FPS;

    // mark that data is old
    m_bDataAvailable = FALSE;

    return (XN_STATUS_OK);
}

The code compile fine, and I could register it with nireg, but when I try to read the image pixel value from the data generated by the module I got some strange value (not 255 as I expected), I use the following code to read the pixel value.

const XnUInt8*    pImageMap = mImageGenerator.GetImageMap();

for (XnUInt y = 0; y < 300; ++y)
{
        for (XnUInt x = 0; x < 400; ++x, ++pImageMap)
        {
            cout << (int)*pImageMap << endl;
        }
}

and also when I run the “NiViewer” the program still say it can't find the image node, but the “SampleModule” can be find as a depth.

Any advice would be appreciate.

Thanks a million,
Haolin Wei

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