Opened 6 years ago

Closed 5 years ago

#503 closed task (fixed)

convert pixel center values to mm center values

Reported by: srkline Owned by: srkline
Priority: major Milestone: VSANS Reduction
Component: All Components Keywords:
Cc: Blocking:
Task:

Description

how do I convert the center in pixels to the center in mm? lateral is easy, 8.4mm spacing. Along the tube is more difficult - since the "zero" pixels don't necessarily line up. Do I just use the 0 tube as my reference and move on, or since the center was fit as essentially an "average" of the pixels, do I use an average pixel number as "zero" -- and then what do I use for the "average" non-linear correction factors? average these too?

Change History (1)

comment:1 Changed 5 years ago by srkline

  • Resolution set to fixed
  • Status changed from new to closed

Beam center is now determined in cm by using the arrays of real-space distances calculated from the non-linear coefficients as the RAW data is loaded.

The real space beam center is converted to pixel values for an approximate display. Calculations do not ever use pixels.

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