Name

adams.flow.transformer.SpectralAngleMapper

Synopsis

Performs Spectral Angle Mapping on a set of spectra. Each spectrum is treated as a vector in band-space (where each spectral band is considered a basis), and the angle between the input and reference spectra is calculated to determine similarity. Emits an array of angles, one for each reference spectrum provided.

For more information see:

Kruse, Fred A, Lefkoff, AB, Boardman, JW, Heidebrecht, KB, Shapiro, AT, Barloon, PJ, Goetz, AFH (1993). The spectral image processing system (SIPS)—interactive visualization and analysis of imaging spectrometer data. Remote sensing of environment. 44(2-3):145--163.

Oshigami, Shoko, Yamaguchi, Yasushi, Uezato, Tatsumi, Momose, Atsushi, Arvelyna, Yessy, Kawakami, Yuu, Yajima, Taro, Miyatake, Shuichi, Nguno, Anna (2013). Mineralogical mapping of southern Namibia by application of continuum-removal MSAM method to the HyMap data. International journal of remote sensing. 34(15):5282--5295.

Additional information

Flow input/output:
- input: adams.data.spectrum.Spectrum
- output: double[]

Options

• loggingLevel
  

  The logging level for outputting errors and debugging output.

  command-line	-logging-level <OFF|SEVERE|WARNING|INFO|CONFIG|FINE|FINER|FINEST>
  default	WARNING
  min-user-mode	Expert

  
  
• name
  

  The name of the actor.

  command-line	-name <java.lang.String>
  default	SpectralAngleMapper

  
  
• annotations
  

  The annotations to attach to this actor.

  command-line	-annotation <adams.core.base.BaseAnnotation>
  default

  
  
• skip
  

  If set to true, transformation is skipped and the input token is just forwarded as it is.

  command-line	-skip <boolean>
  default	false

  
  
• stopFlowOnError
  

  If set to true, the flow execution at this level gets stopped in case this actor encounters an error; the error gets propagated; useful for critical actors.

  command-line	-stop-flow-on-error <boolean>
  default	false
  min-user-mode	Expert

  
  
• silent
  

  If enabled, then no errors are output in the console; Note: the enclosing actor handler must have this enabled as well.

  command-line	-silent <boolean>
  default	false
  min-user-mode	Expert

  
  
• references
  

  The name of the storage location where the reference spectra are stored.

  command-line	-references <adams.flow.control.StorageName>
  default	storage

  
  
• cache
  

  The name of the LRU cache to get the reference storage from. An empty value specifies that regular storage should be used.

  command-line	-cache <adams.core.base.BaseString>
  default

  
  
• checkWaveNumberAlignment
  

  Whether to check that all provided spectra have the same set of wave-numbers.

  command-line	-check-wave-number-alignment <boolean>
  default	true

  
  
• modified
  

  Whether to use the modified algorithm described in Oshigami et al.

  command-line	-modified <boolean>
  default	false