![Как показать обведенную часть изображения на слайде Beamer?](https://rvso.com/image/370316/%D0%9A%D0%B0%D0%BA%20%D0%BF%D0%BE%D0%BA%D0%B0%D0%B7%D0%B0%D1%82%D1%8C%20%D0%BE%D0%B1%D0%B2%D0%B5%D0%B4%D0%B5%D0%BD%D0%BD%D1%83%D1%8E%20%D1%87%D0%B0%D1%81%D1%82%D1%8C%20%D0%B8%D0%B7%D0%BE%D0%B1%D1%80%D0%B0%D0%B6%D0%B5%D0%BD%D0%B8%D1%8F%20%D0%BD%D0%B0%20%D1%81%D0%BB%D0%B0%D0%B9%D0%B4%D0%B5%20Beamer%3F.png)
решение1
Вот пример.
\documentclass{beamer}
\usepackage{tikz}
\begin{document}
\begin{frame}
\frametitle{How to clip a picture?}
\begin{overlayarea}{\textwidth}{\textheight}
\begin{tikzpicture}
\clip (0,0) ellipse (3 and 3);
% \clip (0,0) rectangle +(5,3); for crop in rectangle
% \clip (0,0) circle (3); for crop in circle
\node at (0.8,-3) {\includegraphics{Logo3.png}}; %<-you'll need to adjust these
% coordinates, I do not have your original picture
\end{tikzpicture}
\end{overlayarea}
\end{frame}
\end{document}
ОБНОВЛЯТЬ: Я забыл упомянуть, что вы можете поиграть с масштабом графики.
\documentclass{beamer}
\usepackage{tikz}
\begin{document}
\begin{frame}
\frametitle{How to clip a picture?}
\begin{overlayarea}{\textwidth}{\textheight}
\begin{tikzpicture}
\clip (0,0) ellipse (3 and 2.8);
\node at (0.62,-3) {\includegraphics[scale=0.75]{Logo3.png}}; %<-you'll need to adjust these
% coordinates, I do not have your original picture
\end{tikzpicture}
\end{overlayarea}
\end{frame}
\end{document}