Face Detection--your experiences at DVinfo.net

Go Back   DV Info Net > High Definition Video Acquisition > AVCHD Format Discussion

AVCHD Format Discussion
Inexpensive High Definition H.264 encoding to DVD, Hard Disc or SD Card.


Reply
 
Thread Tools Search this Thread
Old January 23rd, 2009, 05:38 PM   #1
Major Player
 
Join Date: Jun 2003
Location: Crested Butte, CO
Posts: 568
Face Detection--your experiences

I'm curious to hear some real life examples of the strengths and weaknesses of face detection. Anyone?
__________________
Scott
Shot-By-Scott
Scott Brickert is offline   Reply With Quote
Old January 23rd, 2009, 07:54 PM   #2
Major Player
 
Join Date: Sep 2008
Location: Las Vegas, NV
Posts: 628
Quote:
Originally Posted by Scott Brickert View Post
I'm curious to hear some real life examples of the strengths and weaknesses of face detection. Anyone?
With it turned on it would see a face but then it would just search for focus until I just gave up and turned it off.
__________________
EX3, Q6600 Quad core PC - Vista 64, Vegas 8.1 64bit, SR11 b-cam
Erik Phairas is offline   Reply With Quote
Old January 24th, 2009, 12:35 AM   #3
Inner Circle
 
Join Date: Feb 2007
Location: Apple Valley CA
Posts: 4,866
My experience with SR11 and CX12 is that it recognizes faces fairly well, not sure how much adjusting it does, but you definitely get boxes around faces... smile shutter (related technology) works pretty well on the CX12. I feel like it can't hurt having the camera monitoring and adjusting on the fly, so I've left it on.

In the end I suspect it takes a fair amount of the overall processing horsepower of the camera, and turning it off might actually be an advantage? But I can't say for sure...
Dave Blackhurst is offline   Reply With Quote
Old January 28th, 2009, 06:18 PM   #4
Regular Crew
 
Join Date: Apr 2005
Location: Singapore
Posts: 97
This is one of those rare features that I see moving UP from consumer to the pro-level, especially for ENG and non-narrative types of situations.

Each manufacturer has their own algorithms, but the latest generation of camcorders (say those released at CES 2009) have much better practical application than earlier face detection.

So for example in Sony's face detection, they actually use a higher bit rate in the face detection area to compress that part of the image less, and allows you to select the face you want to be primary by simply touching the lcd screen. Canon combines it with their "instant" autofocus system to be able to do some pretty amazing tracking shots, even when the face turns to profile.

Yes its an electronic setting and it can fail, but I think in one or two more generations, face detection will be a standard video tool at most levels of production, and we'll wonder how we ever did without it.
__________________
John Burkhart
http://mynahmedia.com
John M Burkhart is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > High Definition Video Acquisition > AVCHD Format Discussion

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 12:34 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network