ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Two New Methods to Determine Roundness of Apple by Machine Vision

Mehdi Jahangiri, Ahmad Tabatabaeefar, Asadolah Akram, Shahin Rafiee

Proceedings: Abstract Summary, International Conference on Agricultural, Food and Biological Engineering & Post Harvest/Production Technology, Sofitel Raja Orchid Hotel, Khon Kaen, Thailand, 21-24 January 2007. 204 p.

2007

บทคัดย่อ

Roundness is an important physical parameter of agricultural products that is used products, product in transport mode or storage. In o­ne point o­n the curve, Radius of curvature is radius of a o­ne of its arc coincides with curve (roundness is the reverse of radius of and developed to roundness of apples. For this purpose all diameters in every direction by a special technique. The first step was to extract the edge of apple technique in image processing. Roundness of apple was determined by image processing in two methods; all directions and that passed o­n each three points in the edge line three views were 74.8 mm, 74.8 mm and 74.3 method and profile factors show that measurement method doesn’t has significant difference effect in 1% level was different in the three profiles. The converted to edge that passed o­n each three points and its number (n) were determined circles diameter circle diameter, determined. Finally, comparison of mean diameter and roundness, the confirmed that the diameter by this method is a measure for determination of roundness is a fast and accurate method that can be a suitable alternative for handy methods.

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