Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: BTEL: A Binary Tree Encoding Approach for Visual Localization   Visual localization algorithms have achieved significant improvements in
performance thanks to recent advances in camera technology and vision-based
techniques. However, there remains one critical caveat: all current approaches
that are based on image retrieval currently scale at best linearly with the
size of the environment with respect to both storage, and consequentially in
most approaches, query time. This limitation severely curtails the capability
of autonomous systems in a wide range of compute, power, storage, size, weight
or cost constrained applications such as drones. In this work, we present a
novel binary tree encoding approach for visual localization which can serve as
an alternative for existing quantization and indexing techniques. The proposed
tree structure allows us to derive a compressed training scheme that achieves
sub-linearity in both required storage and inference time. The encoding memory
can be easily configured to satisfy different storage constraints. Moreover,
our approach is amenable to an optional sequence filtering mechanism to further
improve the localization results, while maintaining the same amount of storage.
Our system is entirely agnostic to the front-end descriptors, allowing it to be
used on top of recent state-of-the-art image representations. Experimental
results show that the proposed method significantly outperforms
state-of-the-art approaches under limited storage constraints.

15
The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
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The categories of this paper are: hep-lat