latex图片标题居中

1.全局图片标题居中

\usepackage[justification=centering]{caption}

2.兼具居中+左对齐

\usepackage{caption}

如果还不行，在想居中的行这样设置：

\begin{center}
\includegraphics [width=0.5\textwidth]{pic/throughput_latency_r.eps}
\caption{Latency-throughput for read workload}
\includegraphics [width=0.5\textwidth]{pic/throughput_latency_w.eps}
\caption{Latency-throughput for write workload}
\end{center}