Research paper written by So Ishizaki, Hironori Hirai, Takayasu Sakagaito, Tomohiro Takeyama, Naoyuki Oido, Tokuo Tamura, Mikio Mizutani, Yoshiki Watanabe, and Mikio Umeda.
Our high speed camera "HAS-L1" was used.
You can refer to the article from this link.