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Data Acquisition on the Frontend: Server for Multiple Clients

Image Acquisition and Processing

• image acquisition
• software crop
• rotation (90°, 180°, 270°)
• mirror
• simple image scaling
• projections
• simple analysis neglecting further perspective distortion
• histogram
• position of brightest pixel
• center-of-brightness
• FWHM

Camera / Software Settings (if suppported)

• acquisition mode (free running / triggered)
• exposure time
• binning
• gain boost
• contrast
• brightness
• rotation / mirror
• area-of-interest (fixed during runtime)

scintillating screen typically mounted under 45° with respect to the optical axis

• short distance leads to visible perspective distortion
• position in SI units can be calculated for each pixel by

• we do not rectify the image!

scintillating screen typically mounted under 45° with respect to the optical axis

• standard target holder contains alignment marks
• all scale factors are determined from the marks
• vertically mounted assemblies
  • Δs xx = 0 and Δs yx = 0
• horizontally mounted assemblies
  • Δs xy = 0 and Δs yy = 0

perspective distortion is solely handled by the Client

• overlay a grid showing the perspective distortion
• display pixel coordinates in SI units taking perspective into account