robot definition
Work to define the markers on the robot
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docs/pic/code_robot_definition.pdf
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@@ -13,10 +13,18 @@
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% Optional: bessere Schrift
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\usepackage{lmodern}
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\usepackage{caption}
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% Then in your document preamble
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\captionsetup[figure]{font=smaller}
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\title{How to get a robot position from video images}
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\author{Christoph Kendel}
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\date{\today}
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\begin{document}
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\maketitle
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@@ -53,7 +61,7 @@ ArUcos are visable.
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\begin{figure}[h!]
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\includegraphics[width=\linewidth]{pic/robot_image_a.png}
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\includegraphics[width=\linewidth]{pic/robot_image_b.png}
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\caption{Video Capture with recognized Aruco markers}
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\end{figure}
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@@ -105,7 +113,7 @@ $$
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\noindent
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as I know the angle $\alpha$ (yellow triangle) from the printed geometry of the arm. The $x_{242}$ is calculated from all visible markers of the
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as I know the angle $\alpha$ (yellow triangle) from the printed geometry of the arm. The $x_{226}$ is calculated from all visible markers of the
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sled and bizeps, as their markers are fixed in $x$ position. This $\alpha$ is calculated for all markers of the forearm.
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@@ -156,7 +164,7 @@ The direction $P \to M$ in combination with the forearm-direction results in th
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\hfill
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\includegraphics[height=0.26\linewidth]{pic/robot_hand_topView.pdf}
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\hfill {}
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\caption{\small Hand with points to calculate the values for {\tt b, c, e}.}
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\caption{ Hand with points to calculate the values for {\tt b, c, e}.}
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\end{figure}
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@@ -175,4 +183,19 @@ And only if the point $M$ lies in the plane of the rotation {\tt a} arround the
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The NodeJS Program calculates the angles and checks, if they are the ones at the moment represented by the system.
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First try is to just hard-code all the relevant ArucoPoints. That seems to be ok, but it gets impossible to maintain.
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After a week I dont recognize my own code. It's hard to make improvements, when you first have to re-think all those
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small steps, when you have constantly to look up all positions of the markers.
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It seems to be a solution to save the geometry and all markers in one file. That can be edited, that can be improved.
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And here I can save the relation between x,y, and the position of the Aruco Markers. Of course, at the moment
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the geometry is still proitty much hard-coded. But i have some flexibility. And mainly: I can loop over {\sl all
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Arucos on the Board} to find the coordinate system. Or I can loop over all Arucos that
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attache to the ``arm1''.
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\begin{figure}[h!]
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\includegraphics[width=\linewidth]{pic/code_robot_definition.pdf}
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\caption{Robot Geometry in a {\tt .json} File}
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\end{figure}
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\end{document}
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