Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: TransPPG: Two-stream Transformer for Remote Heart Rate Estimate   Non-contact facial video-based heart rate estimation using remote
photoplethysmography (rPPG) has shown great potential in many applications
(e.g., remote health care) and achieved creditable results in constrained
scenarios. However, practical applications require results to be accurate even
under complex environment with head movement and unstable illumination.
Therefore, improving the performance of rPPG in complex environment has become
a key challenge. In this paper, we propose a novel video embedding method that
embeds each facial video sequence into a feature map referred to as Multi-scale
Adaptive Spatial and Temporal Map with Overlap (MAST_Mop), which contains not
only vital information but also surrounding information as reference, which
acts as the mirror to figure out the homogeneous perturbations imposed on
foreground and background simultaneously, such as illumination instability.
Correspondingly, we propose a two-stream Transformer model to map the MAST_Mop
into heart rate (HR), where one stream follows the pulse signal in the facial
area while the other figures out the perturbation signal from the surrounding
region such that the difference of the two channels leads to adaptive noise
cancellation. Our approach significantly outperforms all current
state-of-the-art methods on two public datasets MAHNOB-HCI and VIPL-HR. As far
as we know, it is the first work with Transformer as backbone to capture the
temporal dependencies in rPPGs and apply the two stream scheme to figure out
the interference from backgrounds as mirror of the corresponding perturbation
on foreground signals for noise tolerating.

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The categories of this paper are: physics
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
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The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
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The categories of this paper are: econ
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The categories of this paper are: math
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The categories of this paper are: quant-ph
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The categories of this paper are: q-bio
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: chao-dyn