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Module ImgAlgos::ImgPixAmpFilter

Filter The ImgAlgos::ImgPixAmpFilter is a filter for event selection.
This filter counts the number of image pixels in the specified window which with amplitude is above exceeding the threshold. If the number of high-amplitude pixels exceed the numPixMin, the event is passed for further analysis.

The algorithm performance was tested for CSPad images. This algorithm consumes up to 15 ms/event on psana0205, for maximal full CSPad (1650x1650) window size. For smaller window consumed time is negligible, comparing to the time for image reconstruction time,
which is ~70 ms/event (for cspad_mod.CsPadCalib and CSPadPixCoords::CSPadImageProducer) on psana0205.

Module configuration parameters:

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• The default key ("Image2D") stands for the CSPadPixCoords::Image2D<double> image object. Other key names work for the ndarray<double,2> image object.
• The xmin, xmax, ymin, ymax (in pixels) defines the window in the image for pixel counting. Default values means the entire image range.
• The threshold, numPixMin, and the window extents have to be adjusted for particular experiment.