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Table 1 Parameters used in the object-based image analysis process

From: Identifying landscape features associated with Rift Valley fever virus transmission, Ferlo region, Senegal, using very high spatial resolution satellite imagery

 

Segmentation parameters

Classification

Segmentation level

Spectral band1 (weight)

Scale

Shape

Compact ness

Type of classification

Object Features2

Level 1

MS (1)

200

1

0

Boolean membership functions

NDWI: Mean

Level 2

MS (1)

50

0.8

0.3

Boolean membership functions

NDVI: Mean

     

Nearest

G: Mean, SD

     

Neighbour

R: Mean, SD

     

Classifier

NIR: Mean, SD

 

PAN (0)

    

PAN: Haralick Dissimilarity, Haralick Entropy, Haralick Homogeneity

  1. 1: MS MultiSpectral, PAN Panchromatic.
  2. 2: G Green, R Red, NIR Near infrared, SD Standard deviation, NDVI Normalized Difference Vegetation Index, NDWI Normalized Difference Water Index.