Near-Infrared Imaging Photoplethysmography During Driving

Imaging photoplethysmography (iPPG) could greatly improve driver safety systems by enabling capabilities ranging from identifying driver fatigue to unobtrusive early heart failure detection. Unfortunately, the driving context poses unique challenges to iPPG, including illumination and motion. First, drastic illumination variations present during driving can overwhelm the small intensity-based iPPG signals. Second, significant driver head motionduring driving, as well as camera motion (e.g., vibration) make it challenging to recover iPPG signals. To address these two challenges, we present two innovations. First, we demonstrate that we can reduce most outside light variations using narrow-band near-infrared (NIR) video recordings and obtain reliable heart rate estimates. Second, we present a novel optimizationalgorithm, which we call AutoSparsePPG, that leverages the quasi-periodicity of iPPG signals and achieves better performance than the stateof-the art methods. In addition, we release the first publicly available driving dataset that contains both NIR and RGB video recordings of a passenger’s face with simultaneous ground truth pulse oximeter recordings. IEEE Transactions on Intelligent Transportation Systems

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Call for a Public Open Database of All Chemical Reactions

Today there exists no public, freely downloadable, comprehensive database of all known chemical reactions and associated information. Such a database not only would serve chemical sciences and technologies around the world but also would enable the power of modern AI and machine learning methods to be unleashed on a host of fundamental problems. In time, this could lead to important scientific discoveries and economic developments for the benefit of humanity. While ideally such a repository ought to be created and maintained by an international consortium, in the near future, it may be easier to begin the process through governmental agencies such as the National Science Foundation or the National Institutes of Health. Working together, we could use a multipronged approach that could combine negotiations with commercial stakeholders, crowd-sourcing efforts, automated extraction methods, and legislative actions.

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