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Эффективная детекция лиц на многоядерном процессоре Epiphany

Authors: Sukhinov, A. A.; Ostrobrod, G. B.;

Эффективная детекция лиц на многоядерном процессоре Epiphany

Abstract

В статье рассматривается возможность использования энергоэффективного микропроцессора Epiphany для решения актуальной прикладной задачи - детекции лиц на изображении. Этот микропроцессор представляет собой многоядерную вычислительную систему с распределенной памятью, выполненную на одном кристалле. Из-за малой площади кристалла микропроцессор обладает существенными аппаратными ограничениями (в частности, он имеет всего 32 килобайта памяти на ядро), которые ограничивают выбор алгоритма и затрудняют его программную реализацию. Для детекции лиц адаптирован известный алгоритм, основанный на каскадном классификаторе, использующем LBP-признаки (Local Binary Patterns). Показано, что микропроцессор Epiphany, имеющий 16 ядер, может на этой задаче в 2,5 раза обогнать одноядерный процессор персонального компьютера той же тактовой частоты, при этом потребляя лишь 0,5 ватта электрической мощности. I t is studied the possibility of usage of energy-efficient Epiphany microprocessor for solving actual applied problem of face detection at still image. The microprocessor is a multicore system with distributed memory, implemented in a single chip. Due to small die area the microprocessor has significant hardware limitations (in particular it has only 32 kilobytes of memory per core) which limit the range of usable algorithms and complicate their software implementation. Common face-detection algorithm based on local binary patterns (LBP) and cascading classifier was adapted for parallel implementation. It is shown that Epiphany microprocessor having 16 cores can outperform single-core CPU of personal computer having the same clock rate by a factor of 2.5, while consuming only 0.5 watts of electric power. Сухинов Антон Александрович, к.ф. м.н., научный сотрудник, Сколковский институт науки и технологий (Сколково, Российская Федерация), soukhinov@gmail.com. Остроброд Георгий Борисович, программист ООО «СиВижинЛаб» (Таганрог, Российская Федерация), wdf.gost@gmail.com. A.A. Sukhinov, Skolkovo Institute of Science and Technology (Skolkovo, Russia), G.B. Ostrobrod, CVisionLab (Taganrog, Russia)

Country
Russian Federation
Keywords

УДК 004.272.23, УДК 004.272.45, distributed memory, УДК 004.93’1, распределенная память, параллельная обработка данных, parallel data processing, face detection, детекция лиц, specialized processors, ГРНТИ 50.33, специализированные микропроцессоры, local binary patterns, УДК 004.258, локальные бинарные шаблоны

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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