Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Anti-aliasing in image recording and display hardware: lessons from nature

Publiceringsår: 2004
Språk: Engelska
Sidor: 743-748
Publikation/Tidskrift/Serie: Journal of Optics. A, Pure and Applied Optics
Volym: 6
Nummer: 8
Dokumenttyp: Artikel i tidskrift
Förlag: IOP Publishing


If images are undersampled during electronic recording and reproduction, regular patterns in the image may form interference patterns-aliases-with the mosaic of picture elements (pixels). Aliasing distorts visual information and is a serious technical problem. In a variety of animal eyes, images are also undersampled such that aliasing may occur. Nature's measures to reduce aliasing include (i) mosaics of photosensitive cells (pixels in technical applications) that include many spatial frequencies and are different in geometry for the basic colours red, green, and blue, (ii) electrical coupling between cells of different spectral sensitivities, and (iii) overlap between the spectral sensitivities of different cell types. Computer simulated renderings of images show that the measures are effective. Technical implementation seems to be possible in a variety of applications, such as cameras, television sets, scanners, monitors, data projectors, and digital photocopying machines.


  • Zoology
  • fish retina
  • pixel mosaic
  • aliasing
  • image recording
  • image reproduction


  • Lund Vision Group
  • ISSN: 1741-3567

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen