Oscillations in corn seedling growth as measured by optical flow

Growth of corn seedlings during the coleoptile stage was measured using optical flow. The measurement system was comprised of a digital camera, computer, and related software and measured growth in a continuous, noncontact manner. The use of optical flow to measure shoot elongation, i.e., image moti...

Full description

Saved in:
Bibliographic Details
Published inJournal of the American Society for Horticultural Science Vol. 120; no. 3; pp. 379 - 385
Main Authors Liptay, A. (Agriculture and Agri-Food Canada, Harrow, ON, Canada.), Barron, J.L, Jewett, T, Van Wesenbeeck, I
Format Journal Article
LanguageEnglish
Published 01.05.1995
Subjects
ANALISIS DE SERIES CRONOLOGICAS
ANALYSE DE SERIES CHRONOLOGIQUES
COLEOPTILE
COLEOPTILOS
CRECIMIENTO
CROISSANCE
ESPECTROMETRIA
FEUILLE
HOJAS
PLANTULAS
PLANTULE
PROPIEDADES OPTICAS
PROPRIETE OPTIQUE
SPECTROMETRIE
ZEA MAYS
Online AccessGet full text

Cover

More Information
Summary:Growth of corn seedlings during the coleoptile stage was measured using optical flow. The measurement system was comprised of a digital camera, computer, and related software and measured growth in a continuous, noncontact manner. The use of optical flow to measure shoot elongation, i.e., image motion of the elongating seedling, was most easily computed when there were large spatiotemporal variations of the motion of the corn seedling against the background. The sensitivity of the measurement technique was in the micron per second range. Seedling growth did not occur in a smooth even manner, rather, growth was a series of varying bursts or waves of expansion that appeared to be affected by the physical growth or development of the leaves. Spectral analysis techniques were applied to extract the underlying signal from the observed time series of seedling growth rate and angle
Bibliography:F60
F62
9705876
ISSN:0003-1062
2327-9788
DOI:10.21273/jashs.120.3.379