Mat_<unsigned char> in opencv - Mat datatypes

Question

In the below code if I read image using imread the image is displaying differently and if the source is camera it is showing normal colored image. And below is the code.

Can some one explain bit in detail with some good link if possible?

int main () {

    cv :: Mat_<unsigned char> src;
    cv :: VideoCapture cap(0);

    while ( 1 ) {
        cap >> src;
//      src = cv :: imread ( "C:\\Users\\hubuser10\\Desktop\\1.jpg" );

        imshow ( "test image", src );
        cv :: waitKey(1);
    }

}

Result from imread:

Camera image:

Answer 1

Both VideoCapture and imread without additional parameter returns 3-channels BGR frames. Use cv::Mat_<cv::Vec3b> type.