\begin{figure}[H]
\centering
\includegraphics[scale=0.8]{Quantization}
\caption{对称量化与非对称量化对比图\protect\footnotemark[1]}
\label{Quantization}
\end{figure}
\footnotetext[1]{https://blog.csdn.net/sexyluna/article/details/127542146}
修改https://blog.csdn.net/sexyluna/article/details/127542146为需要的内容即可。