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See also Example for Module ImgAlgos::ImgPeakFinderAB.

Module ImgAlgos::ImgSpectra

Extracts two spectra from image and evaluate their relative difference.

mgAlgos::ImgSpectra psana module:

• gets the ndarray<double,2> image object from event,
• selects two spectral band regions and integrates amplitudes for each column,
• saves two spectra for signal and reference bands and their relative difference as another ndarray<double,2> object in the event.

See also Example for Module ImgAlgos::ImgSpectra.

Module configuration parameters:

• source (default: "DetInfo(:Opal1000)") – source of data
• key_in (default: "img") – key for input image data
• key_out (default: "spectra") – key for output array with spectra
• sig_band_rowc (default: 510) – signal band central row at column=0
• ref_band_rowc (default: 550) – reference ...
• sig_band_tilt (default: 0) – signal band tilt angle
• ref_band_tilt (default: 0) – reference ...
• sig_band_width (default: 10) – signal band width in number op rows
• ref_band_width (default: 10) – reference ...
• print_bits (default: 0) – finder verbosity:
  • =0 - print nothing,
  • +1 - input pars,
  • +2 - event record,
  • +4 - image shape,
  • +8 - spectral array.

Module ImgAlgos::ImgSpectraProc

Works after module ImgAlgos::ImgSpectra.
This module is designed as an example, in order to show how to get access to spectral array.
In particular, method ImgSpectraProc::getSpectra(...) shows how to get pointer to data, and method ImgSpectraProc::printSpectra(...) iterates over array and selectively prints its elements.

Module configuration parameters:

• source (default: "DetInfo(:Opal1000)") – source of data
• key_in (default: "spectra") – key for input image data
• print_bits (default: 0) – finder verbosity:
  • =0 - print nothing,
  • +1 - input pars,
  • +2 - event record,
  • +4 - spectral array shape,
  • +8 - spectral array.

See also Example for Module ImgAlgos::ImgSpectraProc.

Module ImgAlgos::ImgSaveInFile

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