14 January 1999 Alternative method for determining geometrical parameters of agricultural produce
Author Affiliations +
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, Hartmut Gall, Andrew Y. Muir, Andrew Y. Muir, John Fleming, 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

Back to Top