hmmm
April 21, 2007 9:51 pm general chit chathave seen an ad on tv today about a canon digital camera wiht ‘face detection’
surely its not real. seems like a crock to me.
Face Detection Technology
Cameras with the DIGIC III image processor have the ability to detect where human faces are located in the shooting frame, even when they fall between auto focus points. Up to 9 human faces on screen are automatically detected and brought into sharp focus. In addition, exposure errors that can leave a subject’s face too dark or too bright can be corrected.
Andrew :
Date: April 22, 2007 @ 1:18 pm
The claim is interesting, though not so implausible. Recognising something as a face shouldn’t be too hard, because you’re simply looking for something with a couple of predefined features, with enough scope for error based on different faces and different angles. From there, you can just meter the relevant pixels for exposure, and check the focus (I believe they use some sort of phase testing, I can’t remember) for those areas while your at it.
Simple in my head, probably a bit less so in the execution.