Paper · 1979 · Purdue e-Pubs (Purdue University System)

Multi-Temporal Classification of Winter Wheat Using a Growth State Model

Christine A. Hlavka; S. M. Carlyle; Ryozo Yokoyama; et al.

2
claims
4
verbatim quotes
1
citations
3
research areas
✓
Open access

Abstract

In this paper we describe a multi-temporal classification procedure for crops in LANDSAT scenes. The method involves the creation of crop signatures which characterize multi-spectral observations as functions of phenological growth states. The phenological signature models spectral reflectance explicitly as a function of crop maturity rather than a function of observation date. This means that instead of stacking spectral vectors of one observation on another, as is usually done for multi-temporal data, we establish for each possible crop category a correspondence of time to growth state which minimizes the smallest difference between the given multi-spectral multi-temporal vector and the category mean vector indexed by growth state. The results of applying this procedure to winter wheat show that the method is capable of discrimination with about the same degree of accuracy as more traditional multi-temporal classifiers. It shows some potential to label degree of maturity of the crop with out crop condition information in the training set.

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Claims 2

Method / resourceobservedoriginal resultno effectmeasured

Claim · model-written summary

The growth-state classification of winter wheat reaches about the same discrimination accuracy as traditional multi-temporal classifiers.

Taxon
winter wheatTriticum aestivume1
Outcome
discriminatione1
Comparator
more traditional multi-temporal classifierse1
Setting
LANDSAT scenese0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In this paper we describe a multi-temporal classification procedure for crops in LANDSAT scenes”

✓ located verbatim in the source · abstract, characters 0–95 · show in text ↑
e1

“The results of applying this procedure to winter wheat show that the method is capable of discrimination with about the same degree of accuracy as more traditional multi-temporal classifiers”

✓ located verbatim in the source · abstract, characters 744–934 · show in text ↑
Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

The growth-state method shows some potential to label the degree of maturity of winter wheat without crop condition information in the training set.

Taxon
winter wheatTriticum aestivume1
Outcome
degree of maturity of the crope2
Qualifier
with out crop condition information in the training sete2

Not reportedComparatorValue

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The results of applying this procedure to winter wheat show that the method is capable of discrimination with about the same degree of accuracy as more traditional multi-temporal classifiers”

✓ located verbatim in the source · abstract, characters 744–934 · show in text ↑
e2

“It shows some potential to label degree of maturity of the crop with out crop condition information in the training set”

✓ located verbatim in the source · abstract, characters 936–1055 · show in text ↑