logitech facial features tracking

asked 2014-07-08 07:49:11 -0600

for my application i want to track the facial features. i have tried some methods but none of them provided the required robustness , i have seen the Logitech avatars and their facial feature tracking was accurate and robust.any ideas how they are doing ?. it will be helpful....

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you could at least mention, what you tried before...

berak gravatar imageberak ( 2014-07-08 07:56:16 -0600 )edit

Have you seen this book (Chapter 6)?

thdrksdfthmn gravatar imagethdrksdfthmn ( 2014-07-08 08:06:14 -0600 )edit

@berak the first approach 1. haar based face detection , 2.canny edge detection , 3.contours finding and key point detection in this approach the points changes drastically . second approach is using flandmarks but 7 points doesn't fulfill the requirement

Dinesh_Kannan gravatar imageDinesh_Kannan ( 2014-07-08 09:02:58 -0600 )edit

@thdrksdfthmn is any other way to reduce the landmark points in muct database.because i don't want 76 landmark points.

Dinesh_Kannan gravatar imageDinesh_Kannan ( 2014-07-08 22:35:36 -0600 )edit

Yes, when you train the detector, you specify only X points (landmarks). Look a little in the code. I think you should train your own detector

thdrksdfthmn gravatar imagethdrksdfthmn ( 2014-07-09 02:24:17 -0600 )edit

When I have tested it I have got about 10 ms for computer (Win 7 ... I've forgot the other specifications)

thdrksdfthmn gravatar imagethdrksdfthmn ( 2014-07-09 02:25:41 -0600 )edit

Not to disappoint you but Logitech is a company that makes profit from safeguarding their algorithms and keeping them all to themselves. So it would only be guessing how they actually do it, probably based on a combination of existing algorithms which were then patented as a combination.

Stop trying to create sortlike behaviour and just look at existing papers who published usefull work on this like here

StevenPuttemans gravatar imageStevenPuttemans ( 2014-07-09 07:12:47 -0600 )edit

@thdrksdfthmn thanks !. i have seen the book , obtained the landmark points of eyebrows,eyes,nose,mouth with the help of asm (totally 24 landmarks ) using these points applied 3d reconstruction on a face model but rotation is not working , all other transformations are working fine. for head pose estimation i have referred this[http://www.morethantechnical.com/2010/03/19/quick-and-easy-head-pose-estimation-with-opencv-w-code/]... any idea ?

Dinesh_Kannan gravatar imageDinesh_Kannan ( 2014-07-10 00:29:17 -0600 )edit

In fact, the rotation is done by the tracking. If it's lost and rotated, the new init is going to be when a face is found (not rotated).

thdrksdfthmn gravatar imagethdrksdfthmn ( 2014-07-10 06:08:40 -0600 )edit