Face detection using EXIF

[AbdealiLoKo]

This is a table of all camera models that need to be checked. The info here is the make of the camera and some exif data which is normally associated with the make.

• Sony - FacesDetected, Face1Position
• Fujifilm - FacesDetected, FacePositions, Face1Name, Face1Category, Face1Birthday
• Nikon - FacesDetected, FaceDetectFrameSize, Face1Position,
• Panasonic - FacesDetected, Face1Position, RecognizedFace1Name, RecognizedFace1Age
• Pentax - FacesDetected, Face1Position, FacePosition
• Sanyo - FacesDetected, FacePosition
• Casio - FacesDetected, FaceDetectFrameSize, Face1Position
• Ricoh - FacesDetected, FaceDetectFrameSize, Face1Position
• Canon
  • Old versions - FacesDetected, FaceDetectFrameSize, FaceWidth, Face1Position
  • New versions - ValidAFPoints, AFImageWidth, AFImageHeight, AFAreaXPositions, AFAreaYPositions, PrimaryAFPoint
• Olympus - FacesDetected, FaceDetectArea, MaxFaces, FaceDetectFrameSize, FaceDetectFrameCrop

Note that the way the position is written in FacePosition is different for various makes and models.

The perl code given on exiftool forum can be found here: http://u88.n24.queensu.ca/pub/facetest.pl

[drtrigon]

What about asking the users on: https://en.wikipedia.org/wiki/Wikipedia:Requested_pictures to check their cameras and provide examples?

[drtrigon]

https://commons.wikimedia.org/wiki/Commons:Picture_requests

[AbdealiLoKo]

After a fair about of digging around, I found the following images on commons where I could get exif data:

• Sony
  • https://commons.wikimedia.org/wiki/File:2015_NAMM_Show_-_DSC00396_(16344792356).jpg
• Fujifilm
  • https://commons.wikimedia.org/wiki/File:Gabriele_Paolini_Roma_20-9-2015_2.jpg
• Nikon
  • https://commons.wikimedia.org/wiki/File:Alexander_Fomichev_2011-10-27.JPG
• Panasonic - FacesDetected, Face1Position, RecognizedFace1Name, RecognizedFace1Age
  • https://commons.wikimedia.org/wiki/File:Adriana_Cerretelli.JPG (seems corrupt ? Faces Detected is 0, but Face1Position is not 0)
  • https://commons.wikimedia.org/wiki/File:Anra_Kennedy_at_the_editathon_at_the_Royal_Armouries_2016-03-24_01.jpg (FacesDetected is set to 0 ...? But Face1Position is there)
  • https://commons.wikimedia.org/wiki/File:9th_Coventry_Wikimeet_07.jpg (FacesDetected is set to 0 ...? But Face1Position is there and seems credible !)
• Pentax
  • https://commons.wikimedia.org/wiki/File:Quentin_Bryce_and_Neil_Willmett.JPG
• TODO Sanyo - FacesDetected, FacePosition
• TODO Casio - FacesDetected, FaceDetectFrameSize, Face1Position
• TODO Ricoh - FacesDetected, FaceDetectFrameSize, Face1Position
• Canon
  • TODO Old versions - FacesDetected, FaceDetectFrameSize, FaceWidth, Face1Position
  • New versions
  • https://commons.wikimedia.org/wiki/File:Annagrah-2_041.JPG
  • https://commons.wikimedia.org/wiki/File:Bangla_Wikipedia_10_year_Founding_Anniversary_Conference_2015_(130).JPG (EOS model, EOS models have different position encoding)
• Olympus - FacesDetected, FaceDetectArea, MaxFaces
  • https://commons.wikimedia.org/wiki/File:Myriam_Chalek.jpg