\begin{overpic}[width=0.49\textwidth]{ys_ok10vma_h_01_sei}
\put(1,74){\colorbox{white}{(\sublabel{ys_ok10vma_h_01_sei}) \href{http://dream.misasa.okayama-u.ac.jp/?q=20190304115639-703692}{ys_ok10vma_h_01_sei}}}
%%(\subref{ys_ok10vma_h_01_sei}) \href{ys_ok10vma_h_01_sei}
\color{red}
\put(47.7,44.1){\footnotesize \circle{0.7} \href{http://dream.misasa.okayama-u.ac.jp/?q=20190304141434-756231}{spot of ys_ol_ok10vma_h@1}} % 20190304141434-756231 % \vs(-3115.6, -5655.6)
\put(24.6,44.2){\footnotesize \circle{0.7} \href{http://dream.misasa.okayama-u.ac.jp/?q=20190307112321-470122}{spot of to_ol_ok10vma_h@26}} % 20190307112321-470122 % \vs(-3150.3, -5656.8)
%%scale 10 micro meter
\put(1,1){\line(1,0){7.0}}
\end{overpic}