ESP | R Documentation |
The ESP function by Dragut et al. (2010) calculates optimal segmentation scales by calculating, at first, the local variance for every segmented images and then by comparing the results of different segmentation levels (ROC-LV).
ESP(Tool, Scale.Input.Grid, Scale.Input.Grid.Cell.Size = "1", Scale.Statistic.Min.Size = "0", ESP.save = FALSE, ESP.save.path = NULL, Count = "1", Min = "0", Max = "0", Range = "0", Sum = "0", Mean = "0", Var = "0", Stddev = "1", Quantile = 0, Scales, Grass.ESP.Method = "Threshold", Segments.Poly, Seed.Method = "", ...)
Tool |
open-source software to compute segmentation analysis. GRASS or SAGA |
Scale.Input.Grid |
input grid for computing segmentation scale parameters |
Scale.Input.Grid.Cell.Size |
cell size of input grid. Default: "1" |
Scale.Statistic.Min.Size |
min size of area/polygon which is included in statistics (usefull for SAGA GIS segmentations). Default: "0" |
ESP.save |
save estimations of function. Default: FALSE |
ESP.save.path |
path where estimations are stored. Default: input path of segment.poly |
Count |
amount of cells (Grid Statistics). Default:"1" |
Min |
minimum value (Grid Statistics). Default:"0" |
Max |
maximum value (Grid Statistics). Default:"0" |
Range |
range of values (Grid Statistics). Default:"0" |
Sum |
sum of values (Grid Statistics). Default:"0" |
Mean |
mean of values (Grid Statistics). Default:"1" |
Var |
variance of values (Grid Statistics). Default:"0" |
Stddev |
standard deviation (Grid Statistics). Default:"1" |
Quantile |
qunatile (Grid Statistics). Default:"0" |
Scales |
containing scale parameters for loop-segmentation |
Grass.ESP.Method |
determining on which parameter the objective function (~loop) should be performed. Default: "Threshold" |
Segments.Poly |
... |
Seed.Method |
"" |
env |
... |
other... |
see |
DRAGUT, L., TIEDE, D. & S.R. LEVICK (2010): ESP: a tool to estimate scale parameter for multiresolution image segmentation of remotely sensed data. - International Journal of Geographical Information Science 24, 6, 859-871.
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