Face recognition

Non-technical related questions should go here.
gauri
New User
Posts: 2
Joined: Thu Dec 09, 2010 9:57 am

Face recognition

Postby gauri » Tue Dec 14, 2010 1:08 pm

Hi,
I am new to XMOS architecture. I would like to know if it is possible to implement any face recognition algorithm on this platform. How does it supports camera and other image processing functions.
User avatar
Berni
Respected Member
Posts: 363
Joined: Thu Dec 10, 2009 10:17 pm

Postby Berni » Tue Dec 14, 2010 8:53 pm

It certainly is possible but you may have to use external ram for working with a respectable resolution image as the internal ram fills up very fast when you want to store images in it.
User avatar
segher
XCore Expert
Posts: 843
Joined: Sun Jul 11, 2010 1:31 am

Postby segher » Tue Dec 14, 2010 9:19 pm

64kB per core is quite a lot really; you do have to be a bit careful, of course, and you certainly
have to _think_ about how you're using it. It's easily enough to store an image for this.
User avatar
Berni
Respected Member
Posts: 363
Joined: Thu Dec 10, 2009 10:17 pm

Postby Berni » Tue Dec 14, 2010 9:51 pm

Well a 320x240 color image is already 150kB. I know that cause i had problems with a frame buffer for a LCD display. I'm guessing he wants a relatively high res camera to do it accurately
User avatar
segher
XCore Expert
Posts: 843
Joined: Sun Jul 11, 2010 1:31 am

Postby segher » Tue Dec 14, 2010 11:28 pm

Berni wrote:Well a 320x240 color image is already 150kB.
If you store it at 16 bits per pixel, sure. I am saying you don't need that :-)

Everything is always a tradeoff...
gauri
New User
Posts: 2
Joined: Thu Dec 09, 2010 9:57 am

Postby gauri » Wed Dec 15, 2010 8:28 am

Yes I will be needing relatively high resolution image quality to get accurate results. I will be needing RAM also for storing face feature extraction templates.
In this forum only, I read there are issues with implementing external RAM. Does anyone has experience with it?
User avatar
Berni
Respected Member
Posts: 363
Joined: Thu Dec 10, 2009 10:17 pm

Postby Berni » Wed Dec 15, 2010 11:11 am

Well external SRAM works pretty nicely but you need a lot of pins to interface it.

Who is online

Users browsing this forum: No registered users and 0 guests