Image Display Paradigm 3: IDP3

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Image Display Paradigm 3 IDP3
From simple image display to sophisticated image
analysis all in one package. Developed by
members of the NICMOS team including Stobie,
Schneider, Thompson, Lytle,Hines, Silverstone,
Cotera
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Primary Capabilities

• Written in IDL Tested on MacOS, Linux, WinTel,
  Solaris
• Fully configurable preferences
• I/O ? Standard and multi-extension FITS,
  Postscript, TIFF, JPEG, State Save
• GUI modeled after Mac/PC applications like
  Transform Photoshop
• Image Constraints
• Image planes limited by memory only
• Arbitrary array sizes with arbitrary pixel
  scaling (distortion TBA)
• The original image is NEVER altered. Operations
  are applied to original image.
• Interpolation
• Block replication
• Bicubic and bicubic spline
• Bi-Linear
• Basic Image Manipulation
• Shifting, scaling and offsets, rotation, pixel
  scale, (distortion correction)
• Stack manipulation
• Gaussian and Weighted Centroids and alignments
• World coordinate alignment
• ADD, SUB, MUL, DIV, MIN, XOR, POS, abs(NEG)
• Interpolated Zoom and De-Zoom, Median, Mean,
  sig-clip Median and Mean

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Image Analysis

• Full statistics of Region Of Interest with export
  to spread sheet
• Polygon Function allows arbitrarily shaped
  regions
• Polygons are movable and editable (much like in
  AIPS)
• Cross-Cuts
• GUI cuts with editable parameters
• Overplots and dump to ASCII tables
• Gaussian profile fitting
• Radial Profiles
• Gaussian and weighted centroids visualization of
  fits
• Encircled energy with errors
• Dump all parameters to ASCII table
• IDP3 Special Mods for FEPS, MIPS SIRTF
• Intended for analysis of high S/N, isolated
  point-sources
• Distortion formalism being incorporated
• Automatic alignment
• Cross-cut applications to IRS spectroscopy
  (exploration)

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MIPS-Specific Issues

• Latent Images
• Dither pattern does not provide sufficient
  spacing to eliminate latent contribution via
  median
• Especially difficult with structured background
  in GeGa data
• Distortion Corrections
• Assumes optical distortion only
• No capacity for different sized pixels within the
  array
• MOSAIC
• Not specifically designed for mosaics or scan-map
  data
• Will do basic alignment with World Coordinates
• Will correct optical distortion
• Will not auto-scale background