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On learning culture patterns through NDVI curve’s features. Queries: Given a region R and a period P find pixels/points with the pattern of culture C. eg . “For [period 2010-2013] and [regions Minas Gerais & São Paulo] find cultures with [the pattern of cotton]” or - PowerPoint PPT Presentation
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On learning culture patterns throughNDVI curve’s features
Queries:Given a region R and a period P findpixels/points with the pattern of culture C.eg. “For [period 2010-2013] and [regionsMinas Gerais & São Paulo] find cultures with[the pattern of cotton]”
orGiven R and P, find pixels with an associationmain_crop/second_crop C1/C2.eg. “For [period 2010-2013] and [microregionof Campos do Jordão] find [associationssoybean/corn]”
We need a Culture Model
Soybean / Cotton
Soybean / Pearl millet
Soybean / Corn
On learning culture patterns throughNDVI curve’s features
On learning culture patterns throughNDVI curve’s features
Curve features:a) beginning of seasonb) end of seasonc) left 90% leveld) right 90% levele) peakf) amplitudeg) length of seasonh) small integrali) large integralj) sprouting gradientk) senescence gradient
• Curve features (seasonality Parameters):P = (beg, end, length, base, mid-x, max, amp, l-der, r-der, l-integ, s-integ)
• A class C is an association or pair (main-crop, second-crop)
On learning culture patterns throughNDVI curve’s features
SVM
Learning Machine
A collection {(P1, P2, C)}
CultureModel
Learned Culture Patterns
Support Vector Machine (SVM):learning technique based onsupervised classification
Queries
