How convert RealSenseID::Image RAW10_1080P to cv::Mat or What image format have array RealSense ID::Image::buffer?

[ZeosBios]

I'm trying to convert Image RealSenseID::RAW10 to cv::Mat. I get an image from PreviewImageReadyCallback, as shown in the example: https://github.com/IntelRealSense/RealSenseID/blob/master/samples/cpp/preview.cc#L14. But in the finish, I have always gray square. The conversation I make like:

(previewMode=RAW10_1080P)
void ConvertToMat(unsigned char * buffer, unsigned int width, unsigned int height) {
        cv::Mat rgb;
        cv::Mat raw10Img(image.height, image.width, CV_16UC1, image.buffer);

        cv::cvtColor(raw10Img, rgb, cv::COLOR_BayerRG2RGB);
        cv::imwrite("myimage.png", rgb);
}

From web-camera API:
Callback will be used to provide RGB preview image
and into samples/README.md:
Run preview for few seconds. Preview callback prints information on each frame.images are rgb24
I’ll take that as "API return raw data in RGB format", but code bellow don’t work:

        cv::Mat rgb;
        cv::Mat raw10Img(image.height, image.width, CV_8UC3, image.buffer);

        cv::cvtColor(raw10Img, rgb, cv::COLOR_BGR2RGB);
        cv::imwrite("myimage.png", rgb);

What image format have array RealSense ID::Image::unsigned char * buffer in void On Preview ImageReady(const RealSense ID::Image image) when preview Mode=RAW10_1080P? And how much channels in frame?