Image vision technology for the characterisation of shape and geometrical properties of two varieties of lentil grown in Turkey

Abstract

Firatligil-Durmuş E., Šárka E., Bubník Z. (2008): Image vision technology for the characterisation of shape and geometrical properties of two varieties of lentil grown in Turkey. Czech J. Food Sci., 26: 109-116.Geometrical features of lentil seeds (lens culinaris Medik) were analysed using the image analysis LUCIA system Ver. 3.52. The values of the weight of 1000 kernels, kernel density, specific volume, specific surface area, and surface area of 1000 kernels of red and green lentils were determined as 66.61 and 138.56 g, 1504.5 and 1376.4 kg/m 3 , 0.6647 and 0.7265 cm 3 /g, 0.594 and 0.579 m 2 /kg, 395.4 and 801.9 cm 2 , respectively. The lentil volume was simulated by an oblate spheroid and two sphere segments and the volumes obtained with both models were compared with that obtained by pycnometric method. Percentage differences of the two sphere segment approximation for red and green lentils were 4.4% and 4.2%, respectively. The height (thickness) of lentils was constant and practically the same with both varieties (2.6 mm) and therefore it was possible to simplify the geometrical models. Thus, 2D image analysis is suitable for a quick evaluation of the specific volume and surface area of grains on the basis of the projected area (equivalent diameter) without the measurement of the height. Image processing provides a simple, rapid, and non-invasive methodology to estimate lentil geometric features and engineering parameters.

Single Nucleotide Polymorphism Markers Associated with Seed Quality Characteristics of Cultivated Lentil

“…Breeder‐friendly molecular markers would facilitate selection for the ideal seed dimensions as dictated by market preference for specific seed market classes. Seed image analysis technologies can be used effectively to measure seed shape in two dimensions (Firatligil‐Durmus et al, 2008; Tanabata et al, 2012) which might result in higher resolution mapping of diameter. Technologies for measuring plumpness in a high‐throughput manner, however, have yet to be developed.…”

Water uptake and its impact on the texture of lentils (Lens culinaris)

“…Lentil seeds were placed on the special indented tray on narrow edge end and wide edge and scanned. The volume and the surface area of the seeds were calculated assuming that they resembled oblate spheroid (Firatligil-Durmus et al, 2008) using Eqs. (1) and (2), respectively…”

Size properties of legume seeds of different varieties using image analysis

“…The volumes determined by the geometrical approximations were compared with the volume measured by pycnometric method described by Firatligil-Durmus ß et al (2008).…”