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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 2. Отображено 2.
18-04-2023 дата публикации

Micro-nano plastic detection method based on photothermal effect

Номер: CN115979778A
Автор: SHI XIAOFENG, SHI HUI, WU XIUHAO, HUANG XIANGMIN, ZHAO HANG, MA JUN
Принадлежит:

The invention discloses a micro-nano plastic detection method based on a photothermal effect, and relates to the field of micro-nano optics. The micro-nano plastic serves as one of four types of new pollutants specified by the state, and an efficient detection method is urgently needed at present. According to the method disclosed by the invention, a strong photo-thermal trap is formed in a solution through a photo-thermal effect by utilizing resonance absorption of the gold nanoparticles on 785nm laser, so that the micro-nano plastic can be efficiently enriched and captured. The enriched micro-nano plastic can be detected through a surface enhanced Raman spectroscopy (SERS) technology, so that the detection of the low-concentration micro-nano plastic is realized. The method solves the problem that the existing means cannot effectively enrich and detect the micro-nano plastic in a large range, provides a new detection means for monitoring the micro-nano plastic in the water environment ...

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Номер записи: 1
12-08-2015 дата публикации

Method for detecting crowded people flow in real time based on three-dimensional depth map data

Номер: CN104835147A
Автор: PI JIATIAN, GU YUZHANG, DU RUOQI, ZHANG CHENG, WU XIUHAO, WEI ZHI
Принадлежит:

The invention relates to a method for detecting a crowded people flow in real time based on three-dimensional depth map data. The method comprises the following steps: acquiring three-dimensional depth map data by using a camera; acquiring preliminary head targets by using foreground extraction and head target area detection; tracking pedestrians and recording the movement loci; and determining the number of the pedestrians and moving direction according to the movement loci. The method performs image processing on a three-dimensional depth map, effectively solves a defect of false detection in two-dimensional image data processing, improves the accuracy of people flow statistics, reduces computation complexity, may detect people flow in real time, and is suitable for intelligent video monitoring field.

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Номер записи: 2