Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Overview of Perception Methods for Horticultural Robots: From
  Pollination to Harvest   Horticultural enterprises are becoming more sophisticated as the range of the
crops they target expands. Requirements for enhanced efficiency and
productivity have driven the demand for automating on-field operations.
However, various problems remain yet to be solved for their reliable, safe
deployment in real-world scenarios. This paper examines major research trends
and current challenges in horticultural robotics. Specifically, our work
focuses on sensing and perception in the three main horticultural procedures:
pollination, yield estimation, and harvesting. For each task, we expose major
issues arising from the unstructured, cluttered, and rugged nature of field
environments, including variable lighting conditions and difficulties in
fruit-specific detection, and highlight promising contemporary studies.

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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
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The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
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The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
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The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph