Are commercial CCD/CMOS cameras trustable for photomechanics?

Abstract eng:
The parasitic deformation of the images from a digital camera in long-time measurements is investigated, and the heat-induced image expansion and pixel motion are observed. The start-up time differences of multiple high— speed cameras with synchronous triggering are measured, and the possibility of occurrence of unneglectable start-up time differences is calculated. The measuring results show that commercial CCD or CMOS cameras cannot faithfully record the image data in photomechanics measurements with high-precision requirements. The systematic errors from image recording should be compensated.

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