Face recognition (photography)

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For example, the face recognized in the live view of a digital camera when taking a bronze bust of Friedrich Wilhelm Bessel is marked with a yellow frame. The eye closer to the camera was also recognized, marked with a crosshair and automatically focused.

As a face detection (also Face Detection or portrait recognition ) is a process in the digital photography refers to one or more faces of people automatically detects shots and recorded. The digital camera is during active face detection function automatically to the detected faces sharp and selects image parameters such as exposure and white balance for optimal viewing of the skin color , gradients u. The camera manufacturer Nikon presented the models Coolpix 7900, Coolpix 5900 and Coolpix 7600 at the PMA 2005 as the first cameras with this capability .

When digital photography with very low depth of one, in addition to face recognition eye detection are carried out so that the camera closer to eye in focus can be.

functionality

Face recognition in the live view of a digital camera with several people in a painting by John Francis Rigaud , in which the largest recognized face is marked in yellow and the others are marked in white.

The face recognition image analysis process is based on mathematical calculations and can take the following criteria into account, for example:

  • moving objects;
  • oval shapes that are interpreted as possible heads;
  • Colors within these forms, which suggest the presence of the skin pigment melanin , which occurs in every skin color;
  • Eyes identified by their statistically comparable distance.

The faces discovered during the motif search are framed in color on the control screen in live view , which enables the selection to be checked.

Face recognition works for both frontal and profile shots. It does not matter at what distance the people are from the camera, whether they are moving or whether there are other objects in the foreground or background of the image composition.

swell

  1. ↑ http://www.dpreview.com/news/0502/05021604nikonfaceaf.asp Press report on the presentation of face recognition from Nikon at the PMA
  2. ↑ Rudy Winston: What's New: EOS M50 Autofocus - New for Canon - Eye Detection AF , Canon Digital Learning Center, February 25, 2018, accessed August 24, 2018
  3. ^ Detection and Following of a Face in Movement Using a Neural Network. Springer 2009, ISBN 978-3-642-01215-0 .
  4. ↑ a b http://finepix.de/cms/home/myfinepix/foto-wissen/foto-lexikon/glossareintrag/glossary-detail/gesichtsgewinn/ Explanation on the Fujifilm website

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