Accession Number : ADA119964

Title :   Median Filtering of Speckle Noise.

Descriptive Note : Technical rept.,

Corporate Author : ARMY MISSILE COMMAND REDSTONE ARSENAL AL RESEARCH DIRECTORATE

Personal Author(s) : Gallagher,N C ; Sweeney,D W ; Christensen,C R

PDF Url : ADA119964

Report Date : 08 Feb 1982

Pagination or Media Count : 23

Abstract : A digital model was developed which simulates the physical process of speckle noise generation in coherent imagery. This was used to determine the effectiveness of two-dimensional digital filters for the reduction of speckle noise. Median filters, ranked order filters, and separable combinations of these were evaluated and found to yield good improvement in image signal-to-noise ratios. (Author)

Descriptors :   *Digital filters, *Signal processing, *Noise reduction, *Image processing, Signal to noise ratio, Noise, Two dimensional, Images, Coherent radiation, One dimensional, Nonlinear analysis, Digital simulation, Infrared images, Microwaves, Microwave filters, Filters, Sampling

Subject Categories : Electrical and Electronic Equipment
      Test Facilities, Equipment and Methods
      Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE