Add images to tools guide doc

doc/zh-Hans/api.doxyfile

@@ -1765,7 +1765,9 @@ LATEX_EXTRA_STYLESHEET =
 # markers available.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
-LATEX_EXTRA_FILES      = ../static/images/make_install.png
+LATEX_EXTRA_FILES      = ../static/images/make_install.png \
+                         ../static/images/imu_analytics.png \
+                         ../static/images/stamp_analytics.png
 
 # If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated is
 # prepared for conversion to PDF (using ps2pdf or pdflatex). The PDF file will

doc/zh-Hans/guide_tools.md

@@ -28,12 +28,24 @@ python tools/analytics/imu_analytics.py -i dataset -c tools/config/mynteye/mynte
 -al=-1.2,1.2 -gl= -gdu=d -gsu=d -kl=
 ```
 
+![imu analytics](imu_analytics.png)
+
+\latexonly
+\includegraphics[width=0.6\textwidth,keepaspectratio]{imu_analytics.png}
+\endlatexonly
+
 分析图像 & IMU 时间戳，
 
 ```bash
 python tools/analytics/stamp_analytics.py -i dataset -c tools/config/mynteye/mynteye_config.yaml
 ```
 
+![stamp analytics](stamp_analytics.png)
+
+\latexonly
+\includegraphics[width=0.6\textwidth,keepaspectratio]{stamp_analytics.png}
+\endlatexonly
+
 ## 结语
 
 如果用 ROS ，分析脚本也支持 ROS Bag 格式。关于 ROS 的录制和分析，请见 `tools/README.md` 。