14 January 1999 Alternative method for determining geometrical parameters of agricultural produce
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Proceedings Volume 3543, Precision Agriculture and Biological Quality; (1999) https://doi.org/10.1117/12.336907
Event: Photonics East (ISAM, VVDC, IEMB), 1998, Boston, MA, United States
The main criteria used to describe the geometry of agricultural objects are volume and axis measurements. Today accuracy of 10-30 percent is common in mechanical size grading system for potatoes. Electronic systems reach about 10 percent. The market standards are increasing and tolerance values are reducing. A system with tighter sizing parameters is definitely required, although it is envisaged that there will never be a need for micron resolution in size and general shape detection. Resolution in the range of about 1-2 mm is adequate. Agricultural products have allow unit value and many of them have to be handled in a short time period. Fast simple sensors are therefore needed including a simple, compact mechanical construction. Known optical methods are limited in respect of the numbers of 'viewpoints' of the object, which has a bearing on the accuracy.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hartmut Gall, Andrew Y. Muir, John Fleming, "Alternative method for determining geometrical parameters of agricultural produce", Proc. SPIE 3543, Precision Agriculture and Biological Quality, (14 January 1999); doi: 10.1117/12.336907; https://doi.org/10.1117/12.336907

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