使用 LaTeX Beamer 进行演示，有谁知道如何从参考幻灯片上的框架标题中删除边框？
Using LaTeX Beamer for a presentation, does anyone know how to remove the border from the frame title on the references slide?
** 更新了 MWE 的问题
我目前正在使用自定义背景模板图像，在演示结束时，我想显示我使用过的引文。但是，我似乎无法弄清楚如何消除框架标题“参考”顶部、左侧和右侧周围的黑线。
这是用于从 PDF 创建背景模板的文本
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% XXX PhD Presentation %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\documentclass[xcolor=dvipsnames,aspectratio=1610,handout]{beamer} % handout
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Latex Preamble %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage[utf8]{inputenc}
\usetheme[block=fill,progressbar=frametitle]{metropolis}
\setbeamertemplate{frame numbering}[fraction]
\usepackage{appendixnumberbeamer}
\usepackage[sort&compress,numbers]{natbib} % citations
\usepackage{tikz}
\usepackage{tcolorbox} % Use for nice backgrounds around code
\usepackage{enumerate}
\usepackage{amsmath,mathtools,cancel}
\usepackage{media9} %pdflatex, latex+dvips+ps2pdf, xelatex # Allows for the Youtube video
\usepackage{minted} % Code highlighting
\usemintedstyle[python]{perldoc}
\usemintedstyle[matlab]{colorful}
\tcbuselibrary{breakable,skins,minted}
\usefonttheme[onlymath]{serif}
% Specific Colors
\definecolor{URed}{HTML}{CC0000}
\definecolor{UBlack}{HTML}{000000}
\definecolor{UGray}{HTML}{808080}
\definecolor{paperColor}{HTML}{e2c88e}
\definecolor{pythoncodebg}{rgb}{0.99,1,0.99}
\definecolor{matlabcodebg}{rgb}{0.99,0.99,1}
% Algorithm writing
\usepackage{algpseudocode}
\usepackage{algorithm}
% Colored letters around objects
\newcommand\encircleP[1]{%
\tikz[baseline=(X.base)]
\node (X) [draw, shape=circle, inner sep=0, fill=red, text=black] {\strut #1};%
}
\newcommand\encircleA[1]{%
\tikz[baseline=(X.base)]
\node (X) [draw, shape=circle, inner sep=0, fill=yellow, text=black] {\strut #1};%
}
%%%%%%%%%%%%% Beamer specific attributes %%%%%%%%%%%%%%%%%%%%
\setbeamertemplate{section in toc}[sections numbered]
\setbeamersize{text margin left=20pt,text margin right=20pt}
% Add support for \subsubsectionpage
\def\subsubsectionname{\translate{Subsubsection}}
\def\insertsubsubsectionnumber{\arabic{subsubsection}}
\setbeamertemplate{subsubsection page}
{
\begin{centering}
{\usebeamerfont{subsubsection name}\usebeamercolor[fg]{subsubsection name}\subsubsectionname~\insertsubsubsectionnumber}
\vskip1em\par
\begin{beamercolorbox}[sep=4pt,center]{part title}
\usebeamerfont{subsubsection title}\insertsubsubsection\par
\end{beamercolorbox}
\end{centering}
}
\def\subsubsectionpage{\usebeamertemplate*{subsubsection page}}
\AtBeginSection{\frame{\sectionpage}}
\AtBeginSubsection{\frame{\subsectionpage}}
\AtBeginSubsubsection{\frame{\subsubsectionpage}}
% Specific beamer colors
%\setbeamercolor{background canvas}{bg=UGray}
\setbeamercolor{progress bar}{fg=URed,bg=UGray}
\setbeamercolor*{sidebar}{fg=URed,bg=UBlack!80!white}
\setbeamercolor{frametitle}{bg=UGray,fg=white}
\setbeamercolor{section title}{fg=UBlack!80!white}
\setbeamercolor{title}{fg=UBlack!80!white}
\setbeamercolor{author}{fg=UBlack!80!white}
\setbeamercolor{institute}{fg=UBlack!80!white}
\setbeamercolor{date}{fg=UBlack!80!white}
\setbeamercolor{section}{fg=UBlack!80!white}
\setbeamercolor{section in toc}{fg=UBlack!80!white,bg=white}
%%%%% Beamer Alerts %%%%%
\setbeamercolor{alerted text}{fg=URed!30!UBlack} % Alerts for emphasizing text in bullets
\setbeamerfont{alerted text}{series=\normalfont} % Adjust the alert for emphasising text
\mode<handout>{
\setbeamercolor{alerted text}{fg=UBlack!80!white} % Alerts for emphasizing text in bullets
}
% Beamer font size
\setbeamerfont{footnote}{size=\tiny}
% custom heading line in the beamer slide
\newcommand{\heading}[1]{%
\noindent\textbf{\color{UBlack!80!white}\normalfont\bfseries #1}%
\vspace{3pt}%
{\color{URed}\hrule}%
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Adjust beamer length of itemize lists
\makeatletter
\renewcommand{\itemize}[1][]{%
\beamer@ifempty{#1}{}{\def\beamer@defaultospec{#1}}%
\ifnum \@itemdepth >2\relax\@toodeep\else
\advance\@itemdepth\@ne
\beamer@computepref\@itemdepth% sets \beameritemnestingprefix
\usebeamerfont{itemize/enumerate \beameritemnestingprefix body}%
\usebeamercolor[fg]{itemize/enumerate \beameritemnestingprefix body}%
\usebeamertemplate{itemize/enumerate \beameritemnestingprefix body begin}%
\list
{\usebeamertemplate{itemize \beameritemnestingprefix item}}
{%
\setlength\topsep{0pt}%NEW
\setlength\partopsep{0pt}%NEW
\setlength\itemsep{0pt}%NEW
\def\makelabel##1{%
{%
\hss\llap{{%
\usebeamerfont*{itemize \beameritemnestingprefix item}%
\usebeamercolor[fg]{itemize \beameritemnestingprefix item}##1}}%
}%
}%
}
\fi%
\beamer@cramped%
\raggedright%
\beamer@firstlineitemizeunskip%
}
\makeatother
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Beamer version of cancel to make the arrow red
\renewcommand{\CancelColor}{\color{red}} %change cancel color to red
\makeatletter
\let\my@cancelto\cancelto %copy over the original cancelto command
\newcommand<>{\cancelto}[2]{\alt#3{\my@cancelto{#1}{#2}}{\mathrlap{#2}\phantom{\my@cancelto{#1}{#2}}}}
% redefine the cancelto command, using \phantom to assure that the
% result doesn't wiggle up and down with and without the arrow
\makeatother
%%%%%% I couldn't get this to cover the entire slide %%%%%%
%\usebackgroundtemplate{%
% \tikz\node[opacity=0.2] {\includegraphics[height=\paperheight,width=\paperwidth]{./Figures/old_paper_with_Larger_Eye.png}};} % old_paper_with_Larger_Eye
%%%%%% Alternative approach to cover the background slide %%%%%%
\pgfdeclareimage[width=\paperwidth,height=\paperheight]{mybackground}{./Figures/old_paper_with_Larger_Eye.pdf}
% Use with PdfLaTeX
\setbeamertemplate{background canvas}{%
\begin{picture}(160mm,100mm)
\begin{beamercolorbox}[wd=\paperwidth,ht=\paperheight]{bgcolor}
\end{beamercolorbox}
\put(-419,-3.5){%
\tikz\node[opacity=0.15]{\pgfuseimage{mybackground}};
}
\end{picture}
}
% Presentation attributes
\title{Presentation Title}
%\subtitle{\small Subtitle}
\author[XXX]{First Name Last Name} % Author
\institute{\small Institute}
\date{\tiny\today}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Latex Preamble %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
% ---------------------------------------------------------------------------- %
\begin{frame}
\titlepage
\end{frame}
\note{Disclosure statements ``None exist"}
\begin{frame}{Overview}
\tableofcontents
\end{frame}
% ---------------------------------------------------------------------------- %
\section{Background}
% ---------------------------------------------------------------------------- %
\begin{frame}[t]
\frametitle{Motivation}
\heading{Retinal Diseases}
\begin{itemize}[<+-| alert@+>] \pause
\item[] Age-related macular degeneration (AMD)
\begin{itemize}[<+-| alert@+>]
\item 8 million Americans and anticipated to increase by 50\% by 2020 \cite{Jager_2008}
\end{itemize}
\item[] Posterior vitreous detachment (PVD)
\begin{itemize}[<+-| alert@+>]
\item 24\% of the population, 50-59 yrs. 87\% 80-89 yrs. \cite{Bond-Taylor_2017}
\end{itemize}
\item[] Traumatic rhegmatogenous retinal detachment (RD)
\begin{itemize}[<+-| alert@+>]
\item Approximately 1 in 10,000 individuals suffer from retinal detachment each year \cite{Gariano_2004} about 15\% of these are traumatic \cite{Mitry_2010}
\end{itemize}
\end{itemize}
\end{frame}
\appendix
{\tiny
\begin{frame}[t, allowframebreaks]
\bibliographystyle{ieeetr} % Orders the bibliography to begin with the number 1, 2, 3, .
\bibliography{Dissertation_Presentation_Bib}
\end{frame}}
\end{document}
当我在演示结束时显示参考书目时，我在参考框架标题的边缘出现了三条黑线，我不确定如何去除它们。我想要那里的红线，而不是三条黑线。所有其他框架标题在文本周围没有这些额外的行。
Three black lines around the references frame title that I want to remove
非常感谢！
Natbib 通常为参考文献开始一个新部分，但在框架内开始一个新部分并不是一个好主意。您可以通过重新定义 \bibsection 宏来避免此问题：
\documentclass[xcolor=dvipsnames,aspectratio=1610,handout]{beamer}
\usetheme[block=fill,progressbar=frametitle]{metropolis}
\usepackage[sort&compress,numbers]{natbib} % citations
\renewcommand{\bibsection}{}
\begin{document}
\begin{frame}
\frametitle{title}
\cite{test}
\end{frame}
\begin{frame}
\frametitle{References}
\bibliographystyle{ieeetr}
\bibliography{\jobname}
\end{frame}
\end{document}
** 更新了 MWE 的问题
我目前正在使用自定义背景模板图像，在演示结束时，我想显示我使用过的引文。但是，我似乎无法弄清楚如何消除框架标题“参考”顶部、左侧和右侧周围的黑线。
这是用于从 PDF 创建背景模板的文本
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% XXX PhD Presentation %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\documentclass[xcolor=dvipsnames,aspectratio=1610,handout]{beamer} % handout
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Latex Preamble %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage[utf8]{inputenc}
\usetheme[block=fill,progressbar=frametitle]{metropolis}
\setbeamertemplate{frame numbering}[fraction]
\usepackage{appendixnumberbeamer}
\usepackage[sort&compress,numbers]{natbib} % citations
\usepackage{tikz}
\usepackage{tcolorbox} % Use for nice backgrounds around code
\usepackage{enumerate}
\usepackage{amsmath,mathtools,cancel}
\usepackage{media9} %pdflatex, latex+dvips+ps2pdf, xelatex # Allows for the Youtube video
\usepackage{minted} % Code highlighting
\usemintedstyle[python]{perldoc}
\usemintedstyle[matlab]{colorful}
\tcbuselibrary{breakable,skins,minted}
\usefonttheme[onlymath]{serif}
% Specific Colors
\definecolor{URed}{HTML}{CC0000}
\definecolor{UBlack}{HTML}{000000}
\definecolor{UGray}{HTML}{808080}
\definecolor{paperColor}{HTML}{e2c88e}
\definecolor{pythoncodebg}{rgb}{0.99,1,0.99}
\definecolor{matlabcodebg}{rgb}{0.99,0.99,1}
% Algorithm writing
\usepackage{algpseudocode}
\usepackage{algorithm}
% Colored letters around objects
\newcommand\encircleP[1]{%
\tikz[baseline=(X.base)]
\node (X) [draw, shape=circle, inner sep=0, fill=red, text=black] {\strut #1};%
}
\newcommand\encircleA[1]{%
\tikz[baseline=(X.base)]
\node (X) [draw, shape=circle, inner sep=0, fill=yellow, text=black] {\strut #1};%
}
%%%%%%%%%%%%% Beamer specific attributes %%%%%%%%%%%%%%%%%%%%
\setbeamertemplate{section in toc}[sections numbered]
\setbeamersize{text margin left=20pt,text margin right=20pt}
% Add support for \subsubsectionpage
\def\subsubsectionname{\translate{Subsubsection}}
\def\insertsubsubsectionnumber{\arabic{subsubsection}}
\setbeamertemplate{subsubsection page}
{
\begin{centering}
{\usebeamerfont{subsubsection name}\usebeamercolor[fg]{subsubsection name}\subsubsectionname~\insertsubsubsectionnumber}
\vskip1em\par
\begin{beamercolorbox}[sep=4pt,center]{part title}
\usebeamerfont{subsubsection title}\insertsubsubsection\par
\end{beamercolorbox}
\end{centering}
}
\def\subsubsectionpage{\usebeamertemplate*{subsubsection page}}
\AtBeginSection{\frame{\sectionpage}}
\AtBeginSubsection{\frame{\subsectionpage}}
\AtBeginSubsubsection{\frame{\subsubsectionpage}}
% Specific beamer colors
%\setbeamercolor{background canvas}{bg=UGray}
\setbeamercolor{progress bar}{fg=URed,bg=UGray}
\setbeamercolor*{sidebar}{fg=URed,bg=UBlack!80!white}
\setbeamercolor{frametitle}{bg=UGray,fg=white}
\setbeamercolor{section title}{fg=UBlack!80!white}
\setbeamercolor{title}{fg=UBlack!80!white}
\setbeamercolor{author}{fg=UBlack!80!white}
\setbeamercolor{institute}{fg=UBlack!80!white}
\setbeamercolor{date}{fg=UBlack!80!white}
\setbeamercolor{section}{fg=UBlack!80!white}
\setbeamercolor{section in toc}{fg=UBlack!80!white,bg=white}
%%%%% Beamer Alerts %%%%%
\setbeamercolor{alerted text}{fg=URed!30!UBlack} % Alerts for emphasizing text in bullets
\setbeamerfont{alerted text}{series=\normalfont} % Adjust the alert for emphasising text
\mode<handout>{
\setbeamercolor{alerted text}{fg=UBlack!80!white} % Alerts for emphasizing text in bullets
}
% Beamer font size
\setbeamerfont{footnote}{size=\tiny}
% custom heading line in the beamer slide
\newcommand{\heading}[1]{%
\noindent\textbf{\color{UBlack!80!white}\normalfont\bfseries #1}%
\vspace{3pt}%
{\color{URed}\hrule}%
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Adjust beamer length of itemize lists
\makeatletter
\renewcommand{\itemize}[1][]{%
\beamer@ifempty{#1}{}{\def\beamer@defaultospec{#1}}%
\ifnum \@itemdepth >2\relax\@toodeep\else
\advance\@itemdepth\@ne
\beamer@computepref\@itemdepth% sets \beameritemnestingprefix
\usebeamerfont{itemize/enumerate \beameritemnestingprefix body}%
\usebeamercolor[fg]{itemize/enumerate \beameritemnestingprefix body}%
\usebeamertemplate{itemize/enumerate \beameritemnestingprefix body begin}%
\list
{\usebeamertemplate{itemize \beameritemnestingprefix item}}
{%
\setlength\topsep{0pt}%NEW
\setlength\partopsep{0pt}%NEW
\setlength\itemsep{0pt}%NEW
\def\makelabel##1{%
{%
\hss\llap{{%
\usebeamerfont*{itemize \beameritemnestingprefix item}%
\usebeamercolor[fg]{itemize \beameritemnestingprefix item}##1}}%
}%
}%
}
\fi%
\beamer@cramped%
\raggedright%
\beamer@firstlineitemizeunskip%
}
\makeatother
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Beamer version of cancel to make the arrow red
\renewcommand{\CancelColor}{\color{red}} %change cancel color to red
\makeatletter
\let\my@cancelto\cancelto %copy over the original cancelto command
\newcommand<>{\cancelto}[2]{\alt#3{\my@cancelto{#1}{#2}}{\mathrlap{#2}\phantom{\my@cancelto{#1}{#2}}}}
% redefine the cancelto command, using \phantom to assure that the
% result doesn't wiggle up and down with and without the arrow
\makeatother
%%%%%% I couldn't get this to cover the entire slide %%%%%%
%\usebackgroundtemplate{%
% \tikz\node[opacity=0.2] {\includegraphics[height=\paperheight,width=\paperwidth]{./Figures/old_paper_with_Larger_Eye.png}};} % old_paper_with_Larger_Eye
%%%%%% Alternative approach to cover the background slide %%%%%%
\pgfdeclareimage[width=\paperwidth,height=\paperheight]{mybackground}{./Figures/old_paper_with_Larger_Eye.pdf}
% Use with PdfLaTeX
\setbeamertemplate{background canvas}{%
\begin{picture}(160mm,100mm)
\begin{beamercolorbox}[wd=\paperwidth,ht=\paperheight]{bgcolor}
\end{beamercolorbox}
\put(-419,-3.5){%
\tikz\node[opacity=0.15]{\pgfuseimage{mybackground}};
}
\end{picture}
}
% Presentation attributes
\title{Presentation Title}
%\subtitle{\small Subtitle}
\author[XXX]{First Name Last Name} % Author
\institute{\small Institute}
\date{\tiny\today}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Latex Preamble %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
% ---------------------------------------------------------------------------- %
\begin{frame}
\titlepage
\end{frame}
\note{Disclosure statements ``None exist"}
\begin{frame}{Overview}
\tableofcontents
\end{frame}
% ---------------------------------------------------------------------------- %
\section{Background}
% ---------------------------------------------------------------------------- %
\begin{frame}[t]
\frametitle{Motivation}
\heading{Retinal Diseases}
\begin{itemize}[<+-| alert@+>] \pause
\item[] Age-related macular degeneration (AMD)
\begin{itemize}[<+-| alert@+>]
\item 8 million Americans and anticipated to increase by 50\% by 2020 \cite{Jager_2008}
\end{itemize}
\item[] Posterior vitreous detachment (PVD)
\begin{itemize}[<+-| alert@+>]
\item 24\% of the population, 50-59 yrs. 87\% 80-89 yrs. \cite{Bond-Taylor_2017}
\end{itemize}
\item[] Traumatic rhegmatogenous retinal detachment (RD)
\begin{itemize}[<+-| alert@+>]
\item Approximately 1 in 10,000 individuals suffer from retinal detachment each year \cite{Gariano_2004} about 15\% of these are traumatic \cite{Mitry_2010}
\end{itemize}
\end{itemize}
\end{frame}
\appendix
{\tiny
\begin{frame}[t, allowframebreaks]
\bibliographystyle{ieeetr} % Orders the bibliography to begin with the number 1, 2, 3, .
\bibliography{Dissertation_Presentation_Bib}
\end{frame}}
\end{document}
当我在演示结束时显示参考书目时，我在参考框架标题的边缘出现了三条黑线，我不确定如何去除它们。我想要那里的红线，而不是三条黑线。所有其他框架标题在文本周围没有这些额外的行。
Three black lines around the references frame title that I want to remove
非常感谢！
Natbib 通常为参考文献开始一个新部分，但在框架内开始一个新部分并不是一个好主意。您可以通过重新定义 \bibsection 宏来避免此问题：
\documentclass[xcolor=dvipsnames,aspectratio=1610,handout]{beamer}
\usetheme[block=fill,progressbar=frametitle]{metropolis}
\usepackage[sort&compress,numbers]{natbib} % citations
\renewcommand{\bibsection}{}
\begin{document}
\begin{frame}
\frametitle{title}
\cite{test}
\end{frame}
\begin{frame}
\frametitle{References}
\bibliographystyle{ieeetr}
\bibliography{\jobname}
\end{frame}
\end{document}