The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

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

På svenska

Author

Summary, in English

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.

Publishing year

2004

Language

English

Pages

743-748

Publication/Series

Journal of Optics. A, Pure and Applied Optics

Volume

6

Issue

8

Document type

Journal article

Publisher

IOP Publishing

Topic

  • Zoology

Keywords

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

Status

Published

Research group

  • Lund Vision Group

ISBN/ISSN/Other

  • ISSN: 1741-3567