Mapping a specific crop: a temporal approach for sugarcane ratoon

G. Misra, A. Kumar, N.R. Patel, R. Zurita-Milla

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

Mapping a specific crop using single date multi-spectral imagery remains a challenging task because vegetation spectral responses are considerably similar. The use of multi-temporal images helps to discriminate specific crops as the classifier can make use of the uniqueness in the temporal evolution of the spectral responses of the different vegetated classes. However, one major concern in multi-temporal studies is the selection of optimum dates for the discrimination of crops as the use of all available temporal dates can be counterproductive. In this study this concern was addressed by selecting the best 2, 3, 4… combinations dates. This was done by conducting a separability analysis between the spectral response of the class of interest (here, sugarcane-ratoon) and non-interest classes. For this analysis, we used time series LISS-III and AWiFS sensors data that were classified using Possibilistic c-Means (PCM). This fuzzy classifier can extract single class sub-pixel information. The end result of this study was the detection of best (optimum) temporal dates for discriminating a specific crop, sugarcane-ratoon. An accuracy of 92.8 % was achieved for extracting ratoon crop using AWiFS data whereas the optimum temporal LISS-III data provided a least entropy of 0.437. Such information can be used by agricultural department in selecting an optimum number of strategically placed temporal images in the crop growing season for discriminating the specific crop accurately
Original languageEnglish
Pages (from-to)325-334
Number of pages10
JournalPhotonirvachak = Journal of the Indian society of remote sensing
Volume42
Issue number2
DOIs
Publication statusPublished - 14 Jan 2014

Keywords

  • METIS-298776
  • ITC-ISI-JOURNAL-ARTICLE

Fingerprint Dive into the research topics of 'Mapping a specific crop: a temporal approach for sugarcane ratoon'. Together they form a unique fingerprint.

Cite this