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Posted by Halil_Demirezen on May 1, 2008, 3:40 am
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Hello,
We are working on a project which will follow a target on a road. The
authonomous system will use a video camera as an input, and process
the frames on Linux operating system and will instruct tyres, etc to
follow the target.
Which video camera do you suggest for such a project. We will use this
video camera on Linux distribution. And the camera should be
economical of course :)
Best regards.
Halil
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Posted by cadcoke4 on May 1, 2008, 7:25 am
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I posted here about the Z-Cam by 3DV Systems. It is a camera that
uses time-of-flight from a set of LED's that emit a pulse. The
special imaging chip that has a fast gate so that each pixel can have
a depth value.
I imagine that this technology is going to revolutionize navigation
for robots. The best part is that they want to market it to gamers,
and price it under $100.
For computer vision, it can provide a method for creating a 3-d map
of the environment. For your specific application, it provides a way
to filter out objects in the background. I believe this "depth
cropping" is onboard the camera, so it doesn't need computer
processing to do it.
It is supposed to be out this year, but doesn't seem to be for sale
yet to the public. They do have a SDK for sale (and I imagine the
camera is available to developers as well).
Joe Dunfee
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Posted by John Nagle on May 1, 2008, 2:55 pm
Please log in for more thread options cadcoke4 wrote:
> I posted here about the Z-Cam by 3DV Systems. It is a camera that
> uses time-of-flight from a set of LED's that emit a pulse. The
> special imaging chip that has a fast gate so that each pixel can have
> a depth value.
>
> I imagine that this technology is going to revolutionize navigation
> for robots. The best part is that they want to market it to gamers,
> and price it under $100.
>
> For computer vision, it can provide a method for creating a 3-d map
> of the environment. For your specific application, it provides a way
> to filter out objects in the background. I believe this "depth
> cropping" is onboard the camera, so it doesn't need computer
> processing to do it.
>
> It is supposed to be out this year, but doesn't seem to be for sale
> yet to the public. They do have a SDK for sale (and I imagine the
> camera is available to developers as well).
>
> Joe Dunfee
Very nice. It's a gated imager, rather than a per-pixel time of
flight counter, so you don't get full Z data in a single frame.
The price is great, though.
John Nagle
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Posted by A. Caspis on May 1, 2008, 3:27 pm
Please log in for more thread options John Nagle wrote:
> Very nice. It's a gated imager, rather than a per-pixel time of
> flight counter, so you don't get full Z data in a single frame.
My understanding is that they *do* get a full Z-map per frame:
the gating is designed so that each sensor pixel accumulates
light for a duration that is proportional to depth. Presumably
they use another imager, or a second non-gated pulse, to account
for differences in scene reflectivity between pixels.
Any clarification about this product is welcome. If they can
market it for ~ 100 USD, it is going to have a huge impact on
mass-market and homebrew robotics.
AC
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Posted by John Nagle on May 2, 2008, 3:09 am
Please log in for more thread options A. Caspis wrote:
> John Nagle wrote:
>> Very nice. It's a gated imager, rather than a per-pixel time of
>> flight counter, so you don't get full Z data in a single frame.
>
> My understanding is that they *do* get a full Z-map per frame:
> the gating is designed so that each sensor pixel accumulates
> light for a duration that is proportional to depth. Presumably
> they use another imager, or a second non-gated pulse, to account
> for differences in scene reflectivity between pixels.
>
> Any clarification about this product is welcome. If they can
> market it for ~ 100 USD, it is going to have a huge impact on
> mass-market and homebrew robotics.
There's plenty of hype on the web, but even though the company's
site says the product is for sale, they don't even offer anything
you can actually buy, not even a developer kit. No data sheets
or manuals, either.
The thing should work, but they may not have the manufacturing yet
to hit their claimed price point.
If they have a gated imager that good, I'm surprised they don't
make a set of binoculars with it. There's an expensive system
"http://www.laseroptronix.se/gated/gatsys.html" used for seeing
through fog.
John Nagle
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> uses time-of-flight from a set of LED's that emit a pulse. The
> special imaging chip that has a fast gate so that each pixel can have
> a depth value.
>
> I imagine that this technology is going to revolutionize navigation
> for robots. The best part is that they want to market it to gamers,
> and price it under $100.
>
> For computer vision, it can provide a method for creating a 3-d map
> of the environment. For your specific application, it provides a way
> to filter out objects in the background. I believe this "depth
> cropping" is onboard the camera, so it doesn't need computer
> processing to do it.
>
> It is supposed to be out this year, but doesn't seem to be for sale
> yet to the public. They do have a SDK for sale (and I imagine the
> camera is available to developers as well).
>
> Joe Dunfee