• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>American journal of human biology: the official journal of the Human Biology Council >Role of depth in eye distance measurements: Comparison of single and stereo-photogrammetry.
【24h】

Role of depth in eye distance measurements: Comparison of single and stereo-photogrammetry.

机译：深度在眼距测量中的作用：单次和立体摄影测量法的比较。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Photogrammetry has been used as an alternative to direct measurements to obtain facial distances for a variety of anthropometric applications. Taking measurements from photographs is less intrusive to subjects and reduces screening time, but measurements from single frontal photographs neglect depth information and may be inadequate for screening purposes. This study examined the role of depth in measurements of palpebral fissure length, interpupillary distance, inner canthal distance, and outer canthal distance using single- and stereo-photogrammetry; an operator selected landmarks on single and stereo digital photographs displayed on a computer monitor. Depth was not found to make a significant contribution to eye distances in an idealized system where the real-world coordinates of points on the eye were known from three-dimensional calibration of stereo photographs. However, the differences found between measurements taken from single frontal photographs and those from stereo-photogrammetry indicated that measurements from single photographs are prone to errors due to misalignment of the camera, the face, and the calibration instrument during image acquisition; if single photographs are to be used, the placement of these components should be carefully monitored. Am. J. Hum. Biol. 15:573-578, 2003.
机译：摄影测量法已被用作直接测量的替代方法，以获取各种人体测量应用的面部距离。从照片进行测量对对象的干扰较小，并减少了放映时间，但是从单张正面照片进行的测量却忽略了深度信息，可能不足以进行放映。这项研究使用单光和立体摄影测量法研究了深度在测量睑裂长度，瞳孔间距离，内distance距离和外measurements距离中的作用;操作员在计算机监视器上显示的单张和立体数字照片上选择了地标。在理想化的系统中，没有发现深度对眼距有显着影响，在理想化的系统中，通过立体照片的三维校准可以知道眼睛上点的真实坐标。但是，从单幅正面照片获得的测量结果与从立体摄影法获得的测量结果之间的差异表明，由于图像采集过程中相机，面部和校准仪器未对准，单幅照片的测量结果容易出现错误;如果要使用单张照片，则应仔细监控这些组件的位置。上午。 J.哼生物学15：573-578，2003。

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