Algorithm for radiometrically-accurate nonuniformity correction with arbitrary scene motion

Bradley M. Ratliff, Majeed M. Hayat, J. Scott Tyo

Research output: Contribution to journalConference article

3 Scopus citations

Abstract

This paper describes a major generalization of a recently reported radiometrically-accurate algebraic nonuniformity correction (NUC) algorithm. The original technique was capable of accurately estimating the bias nonuniformity from a sequence of pairs of images exhibiting strictly one-dimensional (ID) subpixel shifts. The new technique relaxes the subpixel 1D shift constraint to arbitrary two-dimensional (2D) motion, which can be either sub-pixel or super-pixel. The 2D technique relies on calibrating only rows and columns on the perimeter of the array, which in turn, provides the algorithm with the necessary initial conditions to recursively estimate the bias values in the entire array. In this way, radiometric NUC can be achieved non-disruptively, as needed, without disturbing the functionality of the interior array elements. The 2D algorithm is highly localized in time and space lending itself to near real-time implementation. Radiometric NUC can be achieved with a relatively low number of frames (typically about 10 frame pairs). Moreover, as in its earlier ID version, the performance of the 2D algorithm is shown to be insensitive to spatial diversity in the scene. This paper will address the performance of the 2D technique using real infrared data.

Original languageEnglish (US)
Pages (from-to)82-91
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5076
DOIs
StatePublished - Nov 26 2003
EventInfrared Imaging Systems: Design, Analysis Modeling, and Testing XIV - Orlando, FL, United States
Duration: Apr 23 2003Apr 24 2003

Keywords

  • Calibration
  • Fixed-pattern noise
  • Focal-plane array
  • Infrared sensors
  • Nonuniformity correction
  • Radiometric accuracy
  • Scene-based NUC

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Algorithm for radiometrically-accurate nonuniformity correction with arbitrary scene motion'. Together they form a unique fingerprint.

  • Cite this