With the resurgence of non-contact vital sign sensing due to the COVID-19 pandemic, remote heart-rate monitoring has gained significant prominence. Many existing methods use cameras; however previous work shows a performance loss for darker skin tones. In this paper, we show through light transport analysis that the camera modality is fundamentally biased against darker skin tones. We propose to reduce this bias through multi-modal fusion with a complementary and fairer modality - radar. Through a novel debiasing oriented fusion framework, we achieve performance gains over all tested baselines and achieve skin tone fairness improvements over the RGB modality. That is, the associated Pareto frontier between performance and fairness is improved when compared to the RGB modality. In addition, performance improvements are obtained over the radar-based method, with small trade-offs in fairness. We also open-source the largest multi-modal remote heart-rate estimation dataset of paired camera and radar measurements with a focus on skin tone representation.
Background. The Rubezhinsky Trough has been remained one of the most poorly studied petroleum areas of the Orenburg region to date. At present, Gazprom Neft conducts systematic exploration work within the trough at five license areas of the South Orenburg Cluster. Aim. The purpose of this article is representation of preliminary new dates on a geological structure of paleozoic reef systems within the Rubezhinsky Trough. Materials and methods. The main original materials for the work are the results of the interpretation of the 3D seismic carried out at four license areas. In addition, results drilling and regional sedimentation models were involved for analysis. Results. Regional models of Upper Paleozoic reef systems of the Rubezhinsky Trough have been extensively detailed as a result of the interpretation of 3-D seismic data within the South Orenburg cluster. It was first established that isolated reefs were formed in the interval of the Ardatovian and Mullinian regional stages (Givetian Stage of Middle Devonian) of the research area. Ardatovian-mullinian isolated reefs are covered with clay deposits and represent potential lithological traps for petroleum deposits. Isolated reefs, isolated carbonate platforms and the southern margin of the vast South-Buzuluk carbonate platform with barrier reef systems have been identified for the Frasnian Stage. Isolated frasnian reefs are potential hydrocarbon traps. Barrier frasnian reefs together with increasing them early famennian ones form a series of structural hydrocarbon traps in the overlapping complexes. The significant progradation of the margin of the famennian carbonate platform towards the Pre-Caspian paleobasin is established. Famennian progradation complexes form several large clinoforms which are potentially forward looking for the search for structural-lithological petroleum traps. The barrier reef system has been confirmed for the evaporite-carbonate complex of the Okskian regional stage. Okskian reefs border the late visean epicratonic carbonate platform. Relatively large reefs of the carbonate platform barrier system were identified in the interval from Podolskian regional stage (Carboniferous) to Asselian Stage (Permian). This barrier system has progradational architectures towards the Pre-Caspian paleobasin that was formed from the end of the Middle Carboniferous to the end of the Artinskian Age of the Early Permian. Podolskian-asselian barrier buildings predefine the development of structural hydrocarbon traps of various sizes in overlapping Lower Permian deposits. Conclusions. A preliminary analysis of 3-D seismic data indicates the significant role of the paleozoic reef systems in the formation of the sedimentary complex of the Rubezhinsky trough.
Для изучения строения осадочного чехла в интервале непской и тирской свит выполнено детальное литолого-седиментологическое изучение керна скважин. Обоснованы опорные секвенс-стратиграфические поверхности: границы секвенций, трансгрессивные границы, уровни максимального затопления. В интервале непской и тирской свит выделены четыре секвенции 3-го порядка, дана характеристика их системных трактов. Показано, что в кровле ВЧ-1 субаэральный перерыв с эвапоритами супралиторали соответствует естественной границе между непским и тирским этапами геологического развития. Ключевые слова: литолого-седиментологическое изучение керна, секвенсстратиграфическая модель, венд, непская свита, тирская свита, Непский свод, Непско-Ботуобинская антеклиза, Сибирская платформа. Введение Непско-Ботуобинская антеклиза (НБА) является одним из ведущих районов разведки и добычи углеводородов Восточно-Сибирской нефтегазоносной провинции. В настоящее время изученность этого региона является весьма неравномерной и в целом относительно низкой. Основные проблемы открытия новых залежей в венде связаны с прогнозом распространения пород-коллекторов. Осложнения возникают не только на этапе геологоразведочных работ, но и на стадии эксплуатации месторождений, что может привести к значительному сокращению ресурсной базы. Для снижения рисков при проведении геологоразведочных работ необходимо понимать геологическое строение осадочного комплекса, особенности его формирования и фациальной изменчивости. В данной работе объектом исследования являются отложения глинисто-терригенного комплекса непской свиты и карбонатные отложения тирской свиты венда центральной части НБА (рис. 1). Для изучения формирования вендского палеобассейна седиментации, как сложного комплекса взаимосвязанных геологических тел и процессов, применена методика построения секвенс-стратиграфической модели. Обоснованная модель может служить важным инструментом при прогнозе коллекторов, флюидоупоров и ловушек углеводородов.
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