Inspec keywords: impulse noise; image restoration; median filters; image colour analysis; image filtering

Other keywords: high peak-signal-to-noise ratio; unsymmetrical trimmed median filter; peer-group filter; noise pixel restoration phase; high-density noise supression; impulse noise corrupted pixels; colour images; first-order neighbourhood decision approach; grey scale; noise pixel detection phase; neighbourhood decision based impulse noise filter

Subjects: Optical, image and video signal processing; Computer vision and image processing techniques