The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XLII-3/W3
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3/W3, 101–106, 2017
https://doi.org/10.5194/isprs-archives-XLII-3-W3-101-2017
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3/W3, 101–106, 2017
https://doi.org/10.5194/isprs-archives-XLII-3-W3-101-2017

  19 Oct 2017

19 Oct 2017

WIRED AND WIRELESS CAMERA TRIGGERING WITH ARDUINO

H. Kauhanen and P. Rönnholm H. Kauhanen and P. Rönnholm
  • Aalto University, School of Engineering, Department of Built Environment, P.O. Box 14100, 00076 AALTO, Finland

Keywords: Camera, Triggering, Wired, Wireless, Arduino

Abstract. Synchronous triggering is an important task that allows simultaneous data capture from multiple cameras. Accurate synchronization enables 3D measurements of moving objects or from a moving platform. In this paper, we describe one wired and four wireless variations of Arduino-based low-cost remote trigger systems designed to provide a synchronous trigger signal for industrial cameras. Our wireless systems utilize 315 MHz or 434 MHz frequencies with noise filtering capacitors. In order to validate the synchronization accuracy, we developed a prototype of a rotating trigger detection system (named RoTriDeS). This system is suitable to detect the triggering accuracy of global shutter cameras. As a result, the wired system indicated an 8.91 μs mean triggering time difference between two cameras. Corresponding mean values for the four wireless triggering systems varied between 7.92 and 9.42 μs. Presented values include both camera-based and trigger-based desynchronization. Arduino-based triggering systems appeared to be feasible, and they have the potential to be extended to more complicated triggering systems.