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See also Example for Module ImgAlgos::ImgPeakFinderAB.

Module ImgAlgos::ImgHitFinder

ImgHitFinder is created by request for amo74213. It works pretty similar to ImgCalib, but the threshold algorithms are extended and background subtraction is removed.
It gets the raw image from data and process it as follows:

1. subtracts pedestals,
2. apply gain factors,
3. apply mask, and
4. apply one of the threshold algorithms
   and saves the corrected image or hit-pixel map in the event.

Functionality:

• ImgHitFinder uses the source and key_in parameters to get the input raw image (as ndarray<T,2> object), where T stands for uint16_t, int, float, uint8_t, or double,
• gets the calibration parameters from files fname_peds, fname_gain, fname_mask, and fname_thre, if their names are specified,
• the specified by the file name corrections are applied per-pixel to raw data image as follows:

  Code Block
  bgColor #F7F7ED
  A_cor = A_raw (1) - pedestal | if the file name is specified in the parameter "fname_peds" (2) * gain | if the file name is specified in the parameter "fname_gain" (3) apply mask | if the file name is specified in the parameter "fname_mask" (4) apply threshold | if the file name is specified in the parameter "fname_thre"

• corrected image is saved in the event with key key_out as double (or unsigned for pixel map) type.

Details:

• All files with input calibration parameters should have the same shape as image and formatted as regular text file containing 2d matrix (table) of float (or integer) values, with columns separated by space(s), ' ', and rows(lines) terminated by the '\n'.
• Masking algorithm assumes that good pixels in the fname_mask file should be marked by '1' (ones) and bad pixels – by '0' (zeros). The bad masked pixel amplitudes are substituted by the masked_value.

Corrections are not applied by default or with empty file names.

See also Example for Module ImgAlgos::ImgHitFinder.

Module ImgAlgos::ImgSpectra

This module is motivated by the discussion with Josef Frisch, Ryan Coffee, Nick Hartmann. In xppi0412 etc. experiments they need to extract two spectra from Opal1000 camera image for signal and reference, evaluate their relative difference, and find peak position in the differential spectrum.
Module mgAlgos::ImgSpectra works as follows:

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