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Purpose

 

This panel enables to set the default processing parameters, which are used in those functions related only to the Multitemporal features functionalities.  

 

Technical Note

 

Temporal features are extracted on geocoded time-series Intensity images.

 

The "Input file list" is automatically sorted in chronological order before generating the required products.

 

The ratio related products are generated by considering the newer divided the older acquisition. It means that, in the chronologically ordered input list, the ratio values come from 2nd/1st, 3rd/2nd, etc.

 

The "Generate Dates" flag allows creating the following outputs:

•Max Date - Date corresponding to the highest detected backscatter in the input series.

•Min Date - Date corresponding to the lowest detected backscatter.

•Max Ratio Date - Consecutive date pair corresponding to the highest detected backscatter ratio.

•Min Ratio Date - Consecutive date pair corresponding to the lowest detected backscatter ratio.

 

 

Parameters - Multitemporal Features

 

By setting this flag the output pixel value represents the average calculated from all input data.

 

Std        

By setting this flag the output pixel value represents the standard deviation calculated from all input data.

 

Median        

By setting this flag the output pixel value represents the median value (the central value in the ordered series) calculated from all input data.

 

Gradient        

By setting this flag the output pixel value represents the maximum absolute variation between consecutive acquisition dates. The sign of the variation (i.e. increment or decrement) is not taken into account. This file is not generated when the "dB" flag is checked.

 

Max

By setting this flag the output pixel represents the maximum value extracted from all input data.

 

Min        

By setting this flag the output pixel represents the minimum value extracted from all input data.

 

Span Difference        

By setting this flag the output pixel represents the difference between the maximum value and the minimum value of all input data. This file is not generated when the "dB" flag is checked.

 

Max Increment

By setting this flag the output pixel value represents the maximum increment between consecutive acquisition dates. This file is not generated when the "dB" flag is checked.

 

Max Decrement

By setting this flag the output pixel value represents the maximum decrement between consecutive acquisition dates. This file is not generated when the "dB" flag is checked.

 

Span Ratio        

By setting this flag the output pixel represents the ratio calculated between the maximum value and the minimum value of all input data.

 

Max Ratio

By setting this flag the output pixel represents the maximum value (max backscatter increment) among all ratios calculated between consecutive acquisition dates.

 

Min Ratio

By setting this flag the output pixel represents the minimum value (max backscatter decrement) among all ratios calculated between consecutive acquisition dates.

 

MuSigma

By setting this flag the output pixel represents the mean/standard deviation ratio.

 

Coefficient of Variation        

By setting this flag the output pixel represents the standard deviation/mean ratio.

 

Generate Dates

By setting this flag the dates corresponding to minimum and maximum values are provided (refer to the Technical Note for details).

 

Mode        

By setting this flag the output pixel value represents the mode value (the value which appears more often in the input series) calculated from all input data.

 

Make cmg RGB

By setting this flag an RGB image containing the Coefficient of Variation, the Minimum and the Gradient will be generated.

 

 

Generate Dates

By setting this flag the dates corresponding to minimum and maximum values are provided (refer to the Technical Note for details).

 

Mode        

By setting this flag the output pixel value represents the mode value (the value which appears more often in the input series) calculated from all input data.

 

Make cmg RGB

By setting this flag an RGB image containing the Coefficient of Variation (red), the Minimum (green) and the Gradient (blue) will be generated.

 

Normalization        

By setting this flag the selected feature(s) is normalized with respect to the "mean". The normalization is not carried on for the Coefficient of Variation, the MuSigma, the Standard Deviation and the Mean.

 

Db        

By setting this flag the output is in dB (logarithmic scale instead on linear scale). Note that this option does not foresee the generation of the following features:

 

Common Area

By setting this flag the outputs will contain only the pixels which are valid (i.e. neither missing or null) in all input data.

 

Mode Parameters

 

These parameters will be used for the initialization of the histogram used for the mode calculation. If values are kept to -9999, the histogram is then dynamically calculated for each time series.

 

 Bin Number

 Number of bin. If set to -9999, the number of bin will be the square root of n samples.

 

 Bin Width

This value fix the width of the bin. If set to -9999, the Bin Width will be: [(Max value - Min value)/Bin Number].

 

 Histogram Maximum

This value fix the maximum value that has to be taken into account for the histogram. Values ABOVE this value are considered as outlayer and not taken into account for mode calculation. If set to -9999, the maximum value of the series will be used.

 

 Histogram Minimum

This value fix the minimum value that has to be taken into account for the histogram. Values BELOW this value are considered as outlayer and not taken into account for mode calculation. If set to -9999, the minimum value of the series will be used.

 

 

General Functions

 

Load Preferences

It allows loading specific Preferences tthirteen different settings  as possible alternative default processing values.

 

Load

It allows loading an .xml, .sml or .txt file where SARscape common Preferences where previously saved.

 

Save

It allows saving SARscape common Preferences for a future processing using the same preferences characteristics.

 

Help        

Specific help document section.

 

 

Ok        

The selected default processing parameters are loaded.

 

Cancel        

The window will be closed.

 

Specific Function(s)        

 

None.

References

 

None.