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如何消除图片下方的垂直小间隙？

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如何消除图片下方的垂直小间隙？

我试图将图片放在标题页的底部，但出现了一个非常小的垂直间隙，我想将其删除。以下是 MWE，用于显示我的问题：

\documentclass[letterpaper]{book}
\usepackage[T1]{fontenc}
\usepackage{microtype}
\usepackage{libertine}
\renewcommand*\familydefault{\sfdefault}
\usepackage{anysize}
\marginsize{1.5in}{1in}{0.5in}{0.5in}
\usepackage[x11names]{xcolor}
\definecolor{backgroundcolor}{RGB}{150, 170, 190}
\usepackage{graphicx}
\usepackage{here}
\usepackage{afterpage}
\usepackage{tikz}
\usetikzlibrary{calc}

\newcommand*{\maintitle}{\begingroup
    \pagecolor{backgroundcolor}
    \vfill

    \raggedleft {\huge Name}

    \begin{figure}[H]
        \center
        \includegraphics[width=1\textwidth]{example-image}
    \end{figure}
\endgroup}

\begin{document}

\begin{titlepage}

% CADRE :
    \begin{tikzpicture}[remember picture, overlay]
        \draw[line width = 1in,color = white] ($(current page.north west) + (0.25in,0.25in)$) rectangle ($(current page.south east) + (0.25in,-0.25in)$);
        \draw[line width = 0.25pt,color = black] ($(current page.north west) + (0.75in,-0.25in)$) rectangle ($(current page.south east) + (-0.25in,0.25in)$);
        \draw[line width = 1pt,color = white] ($(current page.north west) + (1in,-0.5in)$) rectangle ($(current page.south east) + (-0.5in,0.5in)$);
    \end{tikzpicture}

    \maintitle

\end{titlepage}

\end{document}

预览，问题以红色显示：

在此处输入图片描述

乍一看，间距五等于H， 哪个就是我想要的。但仔细观察就会发现五实际上略大于H. 我该如何五完全一样H? 我的代码有什么问题？

编辑： 缩放和测量后，差异为垂直 - 高度 = 1pt。这与底部绘制的白线粗细相同，但我怀疑这只是巧合。我可以通过\vspace{-1pt}在我的图形环境下添加来解决我的问题，但我想了解（并正确修复）该问题。

答案1

在页面背景上绘图可能更容易一些eso-pic。这也只需要编译一次。尺寸与您的不同，但我相信您可以弄清楚。

\documentclass[letterpaper]{book}
\usepackage{eso-pic}
\usepackage{tikz}
\usepackage{xcolor}
\definecolor{backgroundcolor}{RGB}{150,170,190}

\begin{document}

\AddToShipoutPictureBG*{%
    \AtTextLowerLeft{%
        \begin{tikzpicture}[overlay]
            \coordinate (ll) at (0,0);
            \coordinate (ur) at (\textwidth,\textheight);
            \draw[black,fill=backgroundcolor] ([shift={(-1in,-1in)}]ll) rectangle ([shift={(1in,1in)}]ur);
            \draw[white] ([shift={(-.25in,-.25in)}]ll) rectangle ([shift={(.25in,.25in)}]ur);
            \useasboundingbox (ll) rectangle (ur);
        \end{tikzpicture}%
    }%
}

\begin{titlepage}
    \raggedleft
    \leavevmode
    \vfill
    \huge Name\par
    \includegraphics[width=1\textwidth]{example-image}
\end{titlepage}

\end{document}

在此处输入图片描述

答案2

我认为图片/图像可以直接作为节点放置在 tikz 中，而不是单独的begingroup

如果我知道页角的精确位置（红色圆圈）

\node[inner sep=0pt, circle,red,fill,draw, minimum size=6pt] at 
(%
$(current page text area.south west)+
 (-0.75in,-0.6in)$
 ){};

然后我可以精确计算任何其他位置——在你的情况下V，h 通过从 x 和 y 侧增加相同的量

\node[inner sep=0pt, circle,red,fill,draw, minimum size=6pt] at (%
$(current page text area.south west)+
% (-0.75in,-0.6in)+<------------------increment v=.2in h=.2in from each side
 (-0.55in,-0.4in)$){};

在此处输入图片描述

\documentclass[letterpaper]{book}
\usepackage[T1]{fontenc}
\usepackage{microtype}
\usepackage{libertine}
\renewcommand*\familydefault{\sfdefault}
\usepackage{anysize}
\marginsize{1.5in}{1in}{0.5in}{0.5in}
\usepackage[x11names]{xcolor}
\definecolor{backgroundcolor}{RGB}{150, 170, 190}
\usepackage{graphicx}
\usepackage{here}
\usepackage{afterpage}
\usepackage{tikz}
\usetikzlibrary{calc}
\usepackage{tikzpagenodes}

\newcommand*{\maintitle}{\begingroup%
    \pagecolor{backgroundcolor}
    \vfill
    \raggedleft {\huge Name}
    \begin{figure}[H]
        \center
        \includegraphics[width=1\textwidth]{example-image}
    \end{figure}
\endgroup}%

\begin{document}

\begin{titlepage}

% CADRE :
    \begin{tikzpicture}[remember picture, overlay]
        \draw[line width = 1in,color = white] ($(current page.north west) + 
        (0.25in,0.25in)$) rectangle ($(current page.south east) + (0.25in,-0.25in)$);
        \draw[line width = 0.25pt,color = black] ($(current page.north west) + 
        (0.75in,-0.25in)$) rectangle ($(current page.south east) + (-0.25in,0.25in)$);
        \draw[line width = 1pt,color = white] ($(current page.north west) + 
     (1in,-0.5in)$) rectangle ($(current page.south east) + (-0.5in,0.5in)$);
    \end{tikzpicture}

    \maintitle
\begin{tikzpicture}[remember picture,overlay]
\node[inner sep=0pt, circle,red,fill,draw, minimum size=6pt] at 
(%
$(current page text area.south west)+
 (-0.75in,-0.6in)$
 ){};
\node[inner sep=0pt, circle,red,fill,draw, minimum size=6pt] at (%
$(current page text area.south west)+
% (-0.75in,-0.6in)+
 (-0.55in,-0.4in)$){};



%\node at (0,0) {\includegraphics[width=4cm]{example-image}};
\end{tikzpicture}
\end{titlepage}

\end{document}

编辑

我忘了添加图片

\node[inner sep=0pt] at (%
$(current page text area.south west)+
% (-0.75in,-0.6in)+
(-0.55in,-0.4in)$){\includegraphics[scale=0.2]{example-image}};

平均能量损失

\documentclass[letterpaper]{book}
\usepackage[T1]{fontenc}
\usepackage{microtype}
\usepackage{libertine}
\renewcommand*\familydefault{\sfdefault}
\usepackage{anysize}
\marginsize{1.5in}{1in}{0.5in}{0.5in}
\usepackage[x11names]{xcolor}
\definecolor{backgroundcolor}{RGB}{150, 170, 190}
\usepackage{graphicx}
\usepackage{here}
\usepackage{afterpage}
\usepackage{tikz}
\usetikzlibrary{calc}
\usepackage{tikzpagenodes}

\newcommand*{\maintitle}{\begingroup%
    \pagecolor{backgroundcolor}
    \vfill
    \raggedleft {\huge Name}
    \begin{figure}[H]
        \center
        \includegraphics[width=1\textwidth]{example-image}
    \end{figure}
\endgroup}%

\begin{document}

\begin{titlepage}

% CADRE :
    \begin{tikzpicture}[remember picture, overlay]
        \draw[line width = 1in,color = blue] ($(current page.north west) + (0.25in,0.25in)$) rectangle ($(current page.south east) + (0.25in,-0.25in)$);
        \draw[line width = 0.25pt,color = black] ($(current page.north west) + (0.75in,-0.25in)$) rectangle ($(current page.south east) + (-0.25in,0.25in)$);
        \draw[line width = 1pt,color = green] ($(current page.north west) + (1in,-0.5in)$) rectangle ($(current page.south east) + (-0.5in,0.5in)$);
    \end{tikzpicture}

%    \maintitle
\begin{tikzpicture}[remember picture,overlay]
\node[inner sep=0pt, circle,red,fill,draw, minimum size=6pt] at 
(%
$(current page text area.south west)+
 (-0.75in,-0.6in)$
 ){};
\node[inner sep=0pt, circle,red,fill,draw, minimum size=6pt] at (%
$(current page text area.south west)+
% (-0.75in,-0.6in)+
 (-0.55in,-0.4in)$){};


\node[inner sep=0pt] at (%
$(current page text area.south west)+
% (-0.75in,-0.6in)+
(-0.55in,-0.4in)$){\includegraphics[scale=0.2]{example-image}};


%\node at (0,0) {\includegraphics[width=4cm]{example-image}};
\end{tikzpicture}
\end{titlepage}

\end{document}

在此处输入图片描述

如果你现在看到，使用 tikz 和删除 maketitle 可以获得更好的精度，正如@HenriMenke 类似评论的那样

编辑2

在此处输入图片描述

\documentclass[letterpaper]{book}
\usepackage[T1]{fontenc}
\usepackage{microtype}
\usepackage{libertine}
\renewcommand*\familydefault{\sfdefault}
\usepackage{anysize}
\marginsize{1.5in}{1in}{0.5in}{0.5in}
\usepackage[x11names]{xcolor}
\definecolor{backgroundcolor}{RGB}{150, 170, 190}
\usepackage{graphicx}
\usepackage{here}
\usepackage{afterpage}
\usepackage{tikz}
\usetikzlibrary{calc,positioning}
\usepackage{tikzpagenodes}

%\newcommand*{\maintitle}{\begingroup%
%   \pagecolor{backgroundcolor}
%   \vfill
%   \raggedleft {\huge Name}
%   \begin{figure}[H]
%       \center
%       \includegraphics[width=1\textwidth]{example-image}
%   \end{figure}
%   \endgroup}%

\begin{document}
        \pagecolor{backgroundcolor}
    \begin{titlepage}
        
    
        \begin{tikzpicture}[remember picture, overlay]
        \draw[line width = 1in,color = blue!30] ($(current page.north west) + (0.25in,0.25in)$) rectangle ($(current page.south east) + (0.25in,-0.25in)$);
        \draw[line width = 0.25pt,color = black] ($(current page.north west) + (0.75in,-0.25in)$) rectangle ($(current page.south east) + (-0.25in,0.25in)$);
        \draw[line width = 1pt,color = green] ($(current page.north west) + (1in,-0.5in)$) rectangle ($(current page.south east) + (-0.5in,0.5in)$);
        \end{tikzpicture}
        
        
        \begin{tikzpicture}[remember picture,overlay, every label/.style=left,]
        \node[name=temp1, inner sep=0pt, circle,red,fill,draw, minimum size=6pt,anchor=center, label=a] at 
        (%
        $(current page text area.south west)+
        (-0.75in,-0.6in)$
        ){} ;
        
        \node[name=temp2,inner sep=0pt, circle,red,fill,draw, minimum size=6pt,anchor=center, label=b] at (%
        $(current page text area.south west)+
        % (-0.75in,-0.6in)+
        (-0.05in,0.1in)$){};
        
        \node[name=temp3,inner sep=0pt, circle,red,fill,draw, minimum size=6pt, label=c] at (%
        $(current page text area.south west)+
        % (-0.75in,-0.6in)+
        (-0.05in,-0.6in)$){};
        
        \node[name=temp4,inner sep=0pt, circle,red,fill,draw, minimum size=6pt, label=d] at (%
        $(current page text area.south west)+
        % (-0.75in,-0.6in)+
        (-0.75in,0.1in)$){};
        
        \node[name=temp5,inner sep=0pt, anchor=south west] at (%
        $(current page text area.south west)+
        % (-0.75in,-0.6in)+
        (-0.05in,0.1in)$)(b){\includegraphics[scale=1,width=\linewidth]{example-image}} node[above=of b.north, yshift=-1cm, xshift=7cm ](){\Large Name};
        
        \draw(temp2)--node[midway, fill=white]{0.7in}(temp4);
        \draw(temp2)--node[midway, fill=white]{0.7in}(temp3);

        \end{tikzpicture}
    \end{titlepage}
    
\end{document}

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