Acknowledgement
This work was supported by Institute of Information & communications Technology Planning & Evaluation (IITP) grant funded by the Korea government (MSIT) (No.2019-0-00231, Development of artificial intelligence based video security technology and systems for public infrastructure safety and the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (No. 2021R1G1A101097111). Also, the work was partly supported by INJEWELME Co., Ltd. for providing the BMI datasets from children.