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Spatial Traces: Enhancing VLA Models with Spatial-Temporal Understanding

Created by
  • Haebom

Author

Maxim A. Patratskiy, Alexey K. Kovalev, Aleksandr I. Panov

Outline

This paper studies a Vision-Language-Action (VLA) model that predicts an agent's movements in virtual and real environments based on visual observations and textual instructions. Unlike previous studies that focused on improving spatial and temporal understanding separately, this paper presents a novel approach that integrates both aspects through visual prompting. We propose a method that projects the visual trajectories of key points in the observations onto a depth map, enabling the model to simultaneously capture spatial and temporal information. Experimental results on SimplerEnv demonstrate that the proposed method improves task performance by 4% compared to SpatialVLA and 19% compared to TraceVLA. Furthermore, the proposed method achieves performance improvements even with limited training data, suggesting its utility in real-world applications where data collection is challenging. The project page can be found at https://ampiromax.github.io/ST-VLA .

Takeaways, Limitations

Takeaways:
An effective method to simultaneously improve spatial and temporal understanding of VLA models through visual prompting is presented.
Achieving performance improvements even with limited training data increases applicability in real-world environments.
Experimentally verified performance improvement compared to SpatialVLA and TraceVLA.
Limitations:
The experiments were conducted only in a specific environment called SimplerEnv, so further research is needed to determine generalizability.
There is a possibility that the performance improvement of the proposed method may be limited to certain types of tasks.
Further validation of performance and scalability in real-world environments is needed.
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