...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aquatic Biology >How to weigh an elephant seal with one finger: a simple three-dimensional photogrammetric application
【24h】

How to weigh an elephant seal with one finger: a simple three-dimensional photogrammetric application

机译：如何用一根手指称量海象：一个简单的三维摄影测量应用程序

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

ABSTRACT: Several studies have developed photogrammetric techniques for indirect mass estimation of seals. Unfortunately, these techniques are often narrowly delineated for specific field scenarios or species. Many require sophisticated, custom-designed equipment or analytical tools, limiting their applicability. We aimed to devise a photogrammetric technique for accurate volume/mass estimation of seals under a variety of field scenarios without manipulation of the animal and with minimal equipment. We used Photomodeler Pro 3-dimensional modelling software to estimate the mass of 53 weighed southern elephant seals Mirounga leonina. The method is centred on animal volume estimation in relation to the 3-dimensional area around it, rather than features of the animal itself, an approach that liberates limitations associated with earlier studies. No morphometric body measures are required for such volume/mass estimation. We offer predictive equations that allow high confidence in mass estimates relative to measured mass (95% confidence interval of mean deviation from measured mass is from ±1.34 to ±3.83% depending on the field scenario). A single photographer with a measuring stick and non-customised digital photographic equipment can use this technique to determine the mass of an elephant seal anywhere in the field with the push of a button.
机译：摘要：多项研究开发了摄影测量技术，以间接评估密封件的质量。不幸的是，通常针对特定的现场情况或物种狭义地描述这些技术。许多产品需要复杂的，定制设计的设备或分析工具，从而限制了其适用性。我们旨在设计一种摄影测量技术，以在各种野外情况下准确地估计海豹的体积/质量，而无需对动物进行操作，并且只需最少的设备。我们使用Photomodeler Pro 3维建模软件来估算53个称重的南部象海豹 Mirounga leonina 的质量。该方法的重点是相对于其周围3维区域的动物体积估计，而不是动物本身的特征，这种方法释放了早期研究的局限性。对于这种体积/质量估计，不需要形态计量人体测量。我们提供的预测方程式使相对于测量质量的质量估算具有较高的置信度（根据现场情况，与测量质量的平均偏差的95％置信区间为±1.34至±3.83％）。具有量尺和非定制数字摄影设备的单个摄影师可以使用此技术，只需按一下按钮即可确定野外任何地方的象海豹的质量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号