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DOI:	10.1371/journal.pone.0133290
论文题名:	Area Estimation of Deep-Sea Surfaces from Oblique Still Images
作者:	Frederico Carvalho Dias; José Gomes-Pereira; Inês Tojeira; Miguel Souto; Andreia Afonso; António Calado; Pedro Madureira; Aldino Campos
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2015
发表日期:	2015-7-15
卷:	10, 期:7
语种:	英语
英文关键词:	Lasers ; Cameras ; Diode lasers ; Image analysis ; Laser beams ; Geology ; Imaging techniques ; Optical equipment
英文摘要:	Estimating the area of seabed surfaces from pictures or videos is an important problem in seafloor surveys. This task is complex to achieve with moving platforms such as submersibles, towed or remotely operated vehicles (ROV), where the recording camera is typically not static and provides an oblique view of the seafloor. A new method for obtaining seabed surface area estimates is presented here, using the classical set up of two laser devices fixed to the ROV frame projecting two parallel lines over the seabed. By combining lengths measured directly from the image containing the laser lines, the area of seabed surfaces is estimated, as well as the camera’s distance to the seabed, pan and tilt angles. The only parameters required are the distance between the parallel laser lines and the camera’s horizontal and vertical angles of view. The method was validated with a controlled in situ experiment using a deep-sea ROV, yielding an area estimate error of 1.5%. Further applications and generalizations of the method are discussed, with emphasis on deep-sea applications.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0133290&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/21083
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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File Name/ File Size	Content Type	Version	Access	License
journal.pone.0133290.PDF（6243KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View 联系获取全文

作者单位:

Task Group for the Extension of the Continental Shelf (EMEPC), Paço de Arcos, Portugal;Task Group for the Extension of the Continental Shelf (EMEPC), Paço de Arcos, Portugal;MARE—Marine and Environmental Sciences Centre, Departamento de Oceanografia e Pescas, Centre of IMAR, Universidade dos Açores, Horta, Portugal;Task Group for the Extension of the Continental Shelf (EMEPC), Paço de Arcos, Portugal;Task Group for the Extension of the Continental Shelf (EMEPC), Paço de Arcos, Portugal;Task Group for the Extension of the Continental Shelf (EMEPC), Paço de Arcos, Portugal;Task Group for the Extension of the Continental Shelf (EMEPC), Paço de Arcos, Portugal;Task Group for the Extension of the Continental Shelf (EMEPC), Paço de Arcos, Portugal;Task Group for the Extension of the Continental Shelf (EMEPC), Paço de Arcos, Portugal

Recommended Citation:

Frederico Carvalho Dias,José Gomes-Pereira,Inês Tojeira,et al. Area Estimation of Deep-Sea Surfaces from Oblique Still Images[J]. PLOS ONE,2015-01-01,10(7)

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