23 October 2006 Development of video technology to analyze dynamics of inertia-based apple orientation
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Proceedings Volume 6381, Optics for Natural Resources, Agriculture, and Foods; 63810Q (2006) https://doi.org/10.1117/12.687039
Event: Optics East 2006, 2006, Boston, Massachusetts, United States
Development of machine vision systems to examine fruit for quality and contamination problems has been stalled due to lack of an inexpensive, fast, method for appropriately orienting fruit for imaging. We recently discovered that apples could be oriented based-on inertial properties. Apples were rolled down a ramp consisting of two parallel rails. When sufficient angular velocity was achieved, the apples moved to a configuration where the stem/calyx axis was perpendicular to the direction of travel. This discovery provides a potential basis for development of a commercially-viable orientation system. However, many question remain concerning the underlying dynamic principles that govern this phenomenon. An imaging system and software were constructed to allow detailed observation of the orientation process. Sequential 640×480 monochrome images are acquired at 60 fps and 1/500 sec exposure. The software finds the center of the apple in each image as well as the vertical movement of the track at a selected coordinate. Early tests revealed that the compliance of the track played a significant role in the orientation process. These data will be used to compare results from empirical tests with predictions of dynamic models.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alan M. Lefcourt, Alan M. Lefcourt, Priya Narayanan, Priya Narayanan, Uri Tasch, Uri Tasch, Rouben Rostamian, Rouben Rostamian, Moon S. Kim, Moon S. Kim, Yud-Ren Chen, Yud-Ren Chen, "Development of video technology to analyze dynamics of inertia-based apple orientation", Proc. SPIE 6381, Optics for Natural Resources, Agriculture, and Foods, 63810Q (23 October 2006); doi: 10.1117/12.687039; https://doi.org/10.1117/12.687039


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