Diff for http://tex.stackexchange.com/questions/250470/using-latexdiff-to-generate-changebars-for-graphics-inside-figures

diff.tex

\documentclass[11pt]{article}
%DIF LATEXDIFF DIFFERENCE FILE
%DIF DEL a.tex   Tue Jun 16 11:29:25 2015
%DIF ADD b.tex   Tue Jun 16 11:29:43 2015
\usepackage{graphicx}
%DIF PREAMBLE EXTENSION ADDED BY LATEXDIFF
%DIF PREAMBLE EXTENSION ADDED BY LATEXDIFF
%DIF UNDERLINE PREAMBLE %DIF PREAMBLE
\RequirePackage[normalem]{ulem} %DIF PREAMBLE
\RequirePackage{color}\definecolor{RED}{rgb}{1,0,0}\definecolor{BLUE}{rgb}{0,0,1} %DIF PREAMBLE
\providecommand{\DIFadd}[1]{{\protect\color{blue}\uwave{#1}}} %DIF PREAMBLE
\providecommand{\DIFdel}[1]{{\protect\color{red}\sout{#1}}}                      %DIF PREAMBLE
%DIF SAFE PREAMBLE %DIF PREAMBLE
\RequirePackage[pdftex]{changebar} %DIF PREAMBLE
\providecommand{\DIFaddbegin}{\begin{changebar}} %DIF PREAMBLE
\providecommand{\DIFaddend}{\end{changebar}} %DIF PREAMBLE
\providecommand{\DIFdelbegin}{\cbdelete} %DIF PREAMBLE
\providecommand{\DIFdelend}{\cbdelete} %DIF PREAMBLE
%DIF IDENTICAL PREAMBLE %DIF PREAMBLE
\providecommand{\DIFaddFL}[1]{\DIFadd{#1}} %DIF PREAMBLE
\providecommand{\DIFdelFL}[1]{\DIFdel{#1}} %DIF PREAMBLE
\providecommand{\DIFaddbeginFL}{\DIFaddbegin} %DIF PREAMBLE
\providecommand{\DIFaddendFL}{\DIFaddend} %DIF PREAMBLE
\providecommand{\DIFdelbeginFL}{\DIFdelbegin} %DIF PREAMBLE
\providecommand{\DIFdelendFL}{\DIFdelend} %DIF PREAMBLE
%DIF END PREAMBLE EXTENSION ADDED BY LATEXDIFF %DIF PREAMBLE
%DIF END PREAMBLE EXTENSION ADDED BY LATEXDIFF

\begin{document}

\begin{figure}
    \centering
    \DIFdelbeginFL %DIFDELCMD < \includegraphics[scale=0.1]{a}
%DIFDELCMD <     %%%
\DIFdelendFL \DIFaddbeginFL \includegraphics[scale=0.1]{b}
    \DIFaddendFL \caption{Figure \DIFdelbeginFL \DIFdelFL{A}\DIFdelendFL \DIFaddbeginFL \DIFaddFL{B}\DIFaddendFL }
    \DIFdelbeginFL %DIFDELCMD < \label{fig:a}
%DIFDELCMD < %%%
\DIFdelendFL \DIFaddbeginFL \label{fig:b}
\DIFaddendFL \end{figure}

\end{document}