TY  - GEN
PB  - ISPRS
T3  - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
TI  - Potential of Consumer-Grade Cameras and Photogrammetric Guidelines for Subsurface Utility Mapping
UR  - https://doi.org/10.5194/isprs-archives-XLVIII-2-W1-2022-243-2022
EP  - 250
N1  - Volume XLVIII-2/W1-2022. - Copyright © Author(s) 2022. This work is distributed under the Creative Commons Attribution 4.0 License.
A1  - Yuen, RZM
A1  - Boehm, Jan
Y1  - 2022/12/08/
KW  - Consumer-grade cameras
KW  -  Smartphones
KW  -  Digital cameras
KW  -  SfM photogrammetry
KW  -  Subsurface utilities
KW  -  Underground mapping
KW  -  Photogrammetric guidelines
AV  - public
SP  - 243
ID  - discovery10159328
N2  - The poor documentation of subsurface utility data is a common problem in many cities, exposing field engineers to risks of utility strike. This paper investigates the use of consumer-grade cameras to improve operational efficiency on construction sites and explores different imaging networks to optimize photogrammetric processing for low-cost subsurface utility surveys. Results from the first part of the study demonstrated the potential of consumer-grade cameras as a photogrammetric utility data acquisition tool. However, statistical insights from the photogrammetric calibration show that caution needs to be taken about the camera types particularly for lens calibration. Results from the second part of the study were recommended as easy-to-understand guidelines for image acquisition at trenches and supported the planning of photogrammetric measurements in the field.
ER  -