使用无人机系统测量幼年大西洋蓝鳍金枪鱼(Thunnus thynnus)的尺寸

IF 1.3 Q3 REMOTE SENSING
J. Jech, Jennifer J. Johnson, M. Lutcavage, Angelia S. M. Vanderlaan, Y. Rzhanov, D. LeRoi
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引用次数: 2

摘要

一架APH-22垂直起降六旋翼飞机被用来收集缅因湾南部海面上幼年大西洋蓝鳍金枪鱼(ABFT;Thunnus thynus)的学校和个体的航空图像。通过应用校准、测试和评估机载运动和高度计传感器以及数码相机和镜头的校准设置和性能测量,从这些图像中获得了鱼类长度、宽度和鱼间距的定量测量。机载运动传感器、相机和镜头校准的准确性和精度足以提供亚厘米精度的长度测量,但高度计的性能最不可靠,需要额外的信息,例如每次飞行期间已知大小物体的图像,以提供将数据纳入渔业管理所需的准确度和精确度的测量。APH-22是获取ABFT个体和学校图像的理想工具,可能是远程监测这些难以捉摸的动物的行为和身体状况的有用工具。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Measurements of juvenile Atlantic bluefin tuna (Thunnus thynnus) size using an unmanned aerial system
An APH-22 vertical-takeoff-and-landing hexacopter was used to collect aerial images of schools and individuals of juvenile Atlantic bluefin tuna (ABFT; Thunnus thynnus) at the sea surface in the southern Gulf of Maine. Quantitative measures of fish length, width, and inter-fish spacing were obtained from these images by applying calibration settings and performance measures from calibrating, testing, and evaluating the onboard motion and altimeter sensors and the digital camera and lenses. The accuracy and precision of the onboard motion sensors, camera, and lens calibrations were sufficient to provide length measurements to sub-centimeter precision, but the altimeter performance was least reliable and required additional information, such as images of known-sized objects during each flight, to provide measurements at the accuracy and precision needed for data to be incorporated in fisheries management. The APH-22 was ideal for acquiring images of ABFT individuals and schools and may be a useful tool for remotely monitoring the behavior and body condition of these elusive animals.
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CiteScore
5.30
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