Full TGIF Record # 73436
Item 1 of 1
DOI:10.21273/HORTSCI.34.3.443D
Web URL(s):https://journals.ashs.org/hortsci/view/journals/hortsci/34/3/article-p443D.xml?rskey=Sv3OCl
    Last checked: 11/15/2019
    Requires: PDF Reader
    Notes: Item is within a single large file; Abstract only
Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Wiest, Steven C.
Author Affiliation:Department HFRR, Kansas State University, Manhattan, KS
Title:Characteristic dimension: A novel adjunct to analyzing species composition in digitzed photos of turfgrass plots
Section:Crop protection
Other records with the "Crop protection" Section
Meeting Info.:96th Annual International Conference of the American Society for Horticultural Science, Minneapolis, MN: July 27-31, 1999
Source:HortScience. Vol. 34, No. 3, June 1999, p. 443.
Publishing Information:Alexandria, VA: American Society for Horticultural Science
# of Pages:1
Keywords:TIC Keywords: Photography; Cynodon; Bouteloua dactyloides; Festuca arundinacea; Zoysia; Differentiation; Species identification
Abstract/Contents:"Digitized photographic images of turf plots composed of bermudagrass, buffalo grass, tall fescue, and zoysiagrass were taken at a height of about 150 cm with a 28-mm lens. Fast Fourier transforms of these images were performed, and a radial plot of the power spectrum was obtained from each image. Hurst plots (log frequency v. log intensity) were used to subract "background" from the power spectra, so peaks would be more evident. The peak of the power spectrum occurs at the average spacing between leaves (more precisely, between areas of the canopy that reflects a signifcant amount of light) and defines the characteristic dimension. Zoysiagrass had the lowest characteristic dimension, while tall fescue had the highest. The width of the power spectrum is indicative of the variability of the characteristic dimension within the canopy. The minimum characteristic dimension (occurring at the highest frequency) was less than 1.7 cm, whereas all the other species had about the same minimum characteristic dimension of ≅ 1.9 cm. The maximum characteristic dimension was greatest for fescue (6.9 cm), followed by buffalo grass (3.8 cm), bermudagrass (3.3 cm), and zoysiagrass (2.8 cm). These results indicate that the characteristic dimension can be a useful tool for discriminating between turfgrass species in digitized images."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wiest, S. C. 1999. Characteristic dimension: A novel adjunct to analyzing species composition in digitzed photos of turfgrass plots. HortScience. 34(3):p. 443.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=73436
If there are problems with this record, send us feedback about record 73436.
Choices for finding the above item:
DOI: 10.21273/HORTSCI.34.3.443D
Web URL(s):
https://journals.ashs.org/hortsci/view/journals/hortsci/34/3/article-p443D.xml?rskey=Sv3OCl
    Last checked: 11/15/2019
    Requires: PDF Reader
    Notes: Item is within a single large file; Abstract only
Find Item @ MSU
MSU catalog number: SB 1 .H64
Find from within TIC:
   Digitally in TIC by record number.
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)