Document Type
Patent
Publication Date
3-5-2013
Abstract
A system and method of determining nitrogen levels from a digital image. In particular, a method of determining leaf nitrogen concentration and yield from a digital photograph of a fully developed leaf (collared leaf) of a crop of nonlegumes, such as corn, rice, wheat, cotton, potatoes or sugarcane. The digital image is processed to determine a dark green color index ("DGCI"), which is closely related to leaf nitrogen concentration and yield. Standardized color disks having known DGCI values are included in the digital photograph and serve as an internal standard. The internal standard allows correction of DGCI of samples when using different cameras and/or when lighting conditions change.
Department
Crop, Soil & Environmental Sciences; Horticulture
Patent Number
US8391565
Application Number
US20110286636
Application Published
11-24-2011
Application Filed
5-24-2010
Assignee
Board of Trustees of the University of Arkansas (Little Rock, AR)
Citation
Purcell, L. C., Rorie, R. L., & Karcher, D. E. (2013). System and method of determining nitrogen levels from a digital image. Patents Granted. Retrieved from https://scholarworks.uark.edu/pat/43
Comments
Larry C. Purcell, Department of Crop, Soil and Environmental Sciences, University of Arkansas, Fayetteville, AR
Robert L. Rorie, Department of Crop, Soil and Environmental Sciences, University of Arkansas, Fayetteville, AR
Douglas E. Karcher, Department of Horticulture, University of Arkansas, Fayetteville, AR