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_posts/research/2018-11-01-trajectory-annotation.md

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+---
+layout: single
+title:  "Trajectory annotation by spatial perception"
+categories: research 
+excerpt: "We propose an approach to annotate trajectories using sequences of spatial perception."
+header:
+  teaser: assets/figures/0_trajectory_reconstruction_teaser.png
+---
+
+![Isovist Concept](\assets\figures\0_trajectory_isovist.jpg){:style="display:block; margin-left:auto; margin-right:auto; width:350px"}
+In the near future, more and more machines will perform tasks in the vicinity of human spaces or support them directly in their spatially bound activities. In order to simplify the verbal communication and the interaction between robotic units and/or humans, reliable and robust systems w.r.t. noise and processing results are needed. This work builds a foundation to address this task. By using a continuous representation of spatial perception in interiors learned from trajectory data, our approach clusters movement in dependency to its spatial context. We propose an unsupervised learning approach based on a neural autoencoding that learns semantically meaningful continuous encodings of spatio-temporal trajectory data. This learned encoding can be used to form prototypical representations. We present promising results that clear the path for future applications. {% cite feld2018trajectory %}
+
+![Trajectory Reconstruction](\assets\figures\0_trajectory_reconstruction.jpg){:style="display:block; margin-left:auto; margin-right:auto; width:350px"}