ISSN:
1432-2137
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Mathematik
Notizen:
-2 . For samples with higher values, however, the method underestimated total length by 〉5%. It is therefore recommended that users of image analysis systems determine this maximum length per unit area for accurate determinations of total root length. In samples that contained different string diameters, the total sample length and average string diameter could accurately be measured. However, the length per diameter class was underestimated by 〉20% when the string diameter was less than one pixel smaller than the upper limit of the diameter class. Adjustment of diameter intervals and increasing the scanner resolution are required to reduce this underestimation. Both the length and the angle of the short segments analyzed were found to influence diameter measurement. Similar sets of experiments are proposed for a rigorous evaluation of the performance of other image analysis systems on root measurements.
Materialart:
Digitale Medien
