KML_CONV提供以下3个filter2D核心算子，替换OpenCV相应接口。
函数名
OpenCV所被替换接口
功能描述
kml_init_filter
cv_hal_filterInit
资源初始化
kml_execute_filter2d
cv_hal_filter
执行filter2D核心计算
kml_free_filter
cv_hal_filterFree
资源释放