�构造mat数据
            let srcRgba = fcv.imread("sunrise_img");

            // 构造mean、std数据
            let meanParams = new fcv.VectorFloat();
            let stdParams = new fcv.VectorFloat();
            let orderIndex = new fcv.VectorUInt();

            meanParams.push_back(23.0);
            meanParams.push_back(23.0);
            meanParams.push_back(23.0);
            stdParams.push_back(1.0);
            stdParams.push_back(2.0);
            stdParams.push_back(3.0);
            or