RE: [Gumstix-users] iLab Toolkit/Visual Processing

[Erik D. R. <eri...@ce...>]

Some library like you mentioned would be primo! My specific usage =
involves all the floating point calculations in my neural network =
(Including the iLab toolbox). I have been banging my head against the =
wall trying to figure out how to modify the calculations to work with =
fixed point. Alas, I am not a mathematician. Just a dumb little =
programmer.=20
=20
You get that next-gen Gum out and I will be one of the first customers. =
Until then, anyone have a library that would help on this?

________________________________

From: gum...@li... on behalf of Craig =
Hughes
Sent: Fri 5/12/2006 1:17 PM
To: gum...@li...
Subject: Re: [Gumstix-users] iLab Toolkit/Visual Processing



We're working on next-gen gumstix stuff now; I think actually that=20
the main contenders at this point for next-gen CPU don't have FPUs on=20
them.  As someone said to me the other day though "If you know what=20
you're doing, fixed point math will always be faster anyway though". =20
My reply was "Yeah, but show me the open source lib which saves me=20
having to code it myself, man!"  I think the topic was actually MP3=20
encoders -- incredibly, there doesn't seem to be a decent fixed-point=20
open source MP3 encoder out there.

C

On May 11, 2006, at 10:19 AM, Erik D. Rodriguez wrote:

> Ahh... yeah... You know, that stood out and poked me in the eye=20
> when I was considering the Gumstix. For some reason, I didnt pay a=20
> great deal of attention... Don' need no stinkin FPU!!! Argh,=20
> yeah... Hmmm. That is going to have a pretty big impact even if I=20
> dont use iLab. Most my neural network code is floating point. Any=20
> chance of a FPU enabled Gum? Either way, no HUGE loss as the Gum is=20
> more than capable of dealing with most of the primary functions.
>
> ________________________________
>
> From: gum...@li... on behalf of Craig=20
> Hughes
> Sent: Wed 5/10/2006 12:54 AM
> To: gum...@li...
> Subject: Re: [Gumstix-users] iLab Toolkit/Visual Processing
>
>
> I haven't used it, but I notice that this is a floating-point=20
> library, and since there's no FPU on the gumstix, it's going to run=20
> EXTREMELY slowly.  If you want to run code on the gumstix, you=20
> should probably look for a fixed-point library instead.
>
> C
>
> On May 9, 2006, at 10:40 AM, Erik D. Rodriguez wrote:
>
>
>       I am currently working through the object model of the iLab=20
> Toolkit (See http://ilab.usc.edu/toolkit/) classes trying to=20
> determine which classes I need for my project, and which would work=20
> on the Gumstix. Then it struck me, perhaps one of you have used=20
> this? (And would be willing to share information/Examples) If not,=20
> have any of you used any other visual processing software? I am=20
> trying to use an established toolkit to allow my robot a basic (Or=20
> better) visual understanding of its environment. iLab looks like a=20
> very useful and competent toolkit, but it also appears incredibly=20
> processor intensive (And very large!).
>     =20
>       I am not really looking for any form of image recognition, but=20
> visual path and object detection are a concern. Other things such=20
> as object tracking, and path projection would be useful.
>
>
> <winmail.dat>



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