\begin{overpic}[width=0.49\textwidth]{ok10vma_h_30_opx}
\put(1,74){\colorbox{white}{(\sublabel{ok10vma_h_30_opx}) \href{http://dream.misasa.okayama-u.ac.jp/?q=20190308093407-022871}{ok10vma_h_30_opx}}}
%%(\subref{ok10vma_h_30_opx}) \href{ok10vma_h_30_opx}
\color{red}
\put(22.5,66.2){\footnotesize \circle{0.7} \href{http://dream.misasa.okayama-u.ac.jp/?q=20190304141437-177565}{spot of ys_pl_ok10vma_h@26}} % 20190304141437-177565 % \vs(7754.9, -4875.0)
\put(56.9,51.1){\footnotesize \circle{0.7} \href{http://dream.misasa.okayama-u.ac.jp/?q=20190304141436-713453}{spot of ys_opx_ok10vma_h@28}} % 20190304141436-713453 % \vs(7867.6, -4927.4)
\put(49.7,42.9){\footnotesize \circle{0.7} \href{http://dream.misasa.okayama-u.ac.jp/?q=20190307112321-478508}{spot of to_opx_ok10vma_h@30}} % 20190307112321-478508 % \vs(7844.1, -4952.8)
%%scale 100 micro meter
\put(1,1){\line(1,0){31.0}}
\end{overpic}