TDA4VM: How to get a correct output image with TIOVX APIs

void vx_experiment_image_scale_1280x960_1024x768(void)
{
    /**
     * - Define objects that we wish to create in the OpenVX application.
     *
     * A vx_context object is defined which is used as input parameter for all subesquent
     * OpenVX object create APIs
     */
    vx_context context;
    vx_graph graph = NULL;
    vx_node node0 = NULL;
    vx_image y_image_1280x960 = NULL;
    vx_image y_image_1024x768 = NULL;
    vx_status status;
    vx_uint32 width;
    vx_uint32 height;

    /**
     * - Create OpenVX context.
     */
    context = vxCreateContext();
    /**
     * - Create OpenVX graph.
     */
    graph = vxCreateGraph(context);
    vxSetReferenceName((vx_reference)graph, "MY_GRAPH");
    /**
     * - Create image object.
     */
    y_image_1280x960 = tivx_utils_create_vximage_from_bmpfile(context, OUT_FILE_NAME_1280x960, (vx_bool)vx_false_e);
    vxSetReferenceName((vx_reference)y_image_1280x960, "Y_IMAGE_1280X960");
    /**
     * - Query image object.
     */
    vxQueryImage(y_image_1280x960, (vx_enum)VX_IMAGE_WIDTH,       &width,  sizeof(vx_uint32));
    vxQueryImage(y_image_1280x960, (vx_enum)VX_IMAGE_HEIGHT,      &height, sizeof(vx_uint32));
    /**
     * - Create OpenVX image Object.
     */
    y_image_1024x768 = vxCreateImage(context, (vx_uint32)(width*0.8), (vx_uint32)(height*0.8), (vx_df_image)VX_DF_IMAGE_U8);
    vxSetReferenceName((vx_reference)y_image_1024x768, "Y_IMAGE_1024x768");
    /**
     * - Create OpenVX node object.
     *   Creates an OpenVX image scale node with y_image_1280x960 input and y_image_1024x768 output.
     */
    node0 = vxScaleImageNode(graph, y_image_1280x960, y_image_1024x768, VX_INTERPOLATION_NEAREST_NEIGHBOR);
    vxSetNodeTarget(node0, VX_TARGET_STRING, "VPAC_MSC1");
    vxSetReferenceName((vx_reference)node0, "SCALE");
    /**
     * - Verify and Process graph object
     */
    status = vxVerifyGraph(graph);
    if(status==(vx_status)VX_SUCCESS) {
        vxProcessGraph(graph);
    }

    /**
	 * - Save image object to bitmap file 
	 */
	 tivx_utils_save_vximage_to_bmpfile(OUT_FILE_NAME_1024x768, y_image_1024x768);

    /**
     * - Release image object.
     */
    vxReleaseImage(&y_image_1280x960);
    vxReleaseImage(&y_image_1024x768);
    /**
     * - Release node object.
     */
    vxReleaseNode(&node0);
    /**
     * - Release graph object.
     */
    vxReleaseGraph(&graph);
    /**
     * - Release context object.
     */
    vxReleaseContext(&context);
    /** \endcode */
}