Page History

...

• gets the pixel coordinates from PixCoords2x1, PixCoordsQuad, and PixCoordsCSPad classes,
• makes the arrays of neighbour addresses (quad, section, row, column) and weights as a function of the bin indexes (ix, iy) of the CSPad image,
• gets data from the event,
• produces the Image2D object with interpolated CSPad image for each event,
• adds the CSPadPixCoords::Image2D<double> or ndarray<double,2> object in the event for processing in other modules.
  In this module we use 4-node bi-linear interpolation algorithm.
  Time consumed to fill the CSPad image array (currently 1750x1750) is measured to be about 200 msec/event on psana0106. We consider options for acceleration using GPU or multi-core processing.

...

CSPadImageGetTest is a psana module class, which works after the CSPadImageProducer or CSPadInterpolImageProducer. It receives the CSPadPixCoords::Image2D<double> or ndarray<double,2> image object from the event. (This image object may be used in further data processing.) For test purpose, the image of particular event, defined by the eventSave parameter in configuration file, is saved in the text file with standard predefined name like cspad_image_get_test_ev<number>.txt.

...

• source (default: "DetInfo(:Cspad)") – source of data
• key (default: "Image2D") – key for input image data
• threshold (default: 10) – minimal threshold on pixel amplitude
• numPixMin (default: 100) – minimal number of pixels with amplitude above the threshold
• filterIsOn (default: true) – ONOn/OFF Off the filter
• xmin (default: 0) – minimal row number
• xmax (default: 100000) – maximal row number
• ymin (default: 0) – minimal column number
• ymax (default: 100000) – maximal column number

...

• 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.