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Date: 03 Oct 2006 19:20:36
From:
Subject: Researchers Aim for Single-Pixel Camera
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http://www.livescience.com/technology/061002_single_pixel.html
I think the future of amateur astro-imagers just got brighter! ;)
Cleardarkskies!
Orion
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Date: 10 Oct 2006 08:04:38
From: Helpful person
Subject: Re: Researchers Aim for Single-Pixel Camera
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mark@curio.com wrote:
> http://www.livescience.com/technology/061002_single_pixel.html
>
> I think the future of amateur astro-imagers just got brighter! ;)
> Cleardarkskies!
> Orion
What drugs are these people on?
Please visit my web site at www.richardfisher.com
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Date: 10 Oct 2006 10:25:56
From: Greg Crinklaw
Subject: Re: Researchers Aim for Single-Pixel Camera
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Helpful person wrote:
> mark@curio.com wrote:
>> http://www.livescience.com/technology/061002_single_pixel.html
>>
>> I think the future of amateur astro-imagers just got brighter! ;)
>> Cleardarkskies!
>> Orion
>
> What drugs are these people on?
>
> Please visit my web site at www.richardfisher.com
What's that supposed to mean? The technique may well have some
potential. I'd think someone claiming to be an optical engineer would
see that, or at least give us an intelligent reason to think otherwise.
--
Greg Crinklaw
Astronomical Software Developer
Cloudcroft, New Mexico, USA (33N, 106W, 2700m)
SkyTools: http://www.skyhound.com/cs.html
Observing: http://www.skyhound.com/sh/skyhound.html
Comets: http://www.skyhound.com/sh/comets.html
To reply take out your eye
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Date: 12 Oct 2006 18:25:32
From: nytecam
Subject: Re: Researchers Aim for Single-Pixel Camera
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Helpful person Wrote:
> mark@curio.com wrote:-
> http://www.livescience.com/technology/061002_single_pixel.html
>
> I think the future of amateur astro-imagers just got brighter! ;)
> Cleardarkskies!
> Orion-
>
> What drugs are these people on?
>
> Please visit my web site at www.richardfisher.com
I make that 33 hours to record a single 6Mp image in my Canon Rebel -
WOW now that's progress I think not!
--
nytecam
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Date: 10 Oct 2006 16:56:22
From: Helpful person
Subject: Re: Researchers Aim for Single-Pixel Camera
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Greg Crinklaw wrote:
>
> What's that supposed to mean? The technique may well have some
> potential. I'd think someone claiming to be an optical engineer would
> see that, or at least give us an intelligent reason to think otherwise.
>
> --
> Greg Crinklaw
I believe that single pixel imaging systems date back to the early days
of television (or perhaps to early oscilloscope days). Both mechanical
scanning and electronic scanning were used.
Single pixel scanning was used to great effect in the 1970s and 1980s
for infra red scanners. This later evolved into line scanners and
eventually arrays of pixels. Another successful single pixel imager,
still in use today, is the confocal microscope.
With regards to returning to single pixel imaging systems, amongst
other matters, to reduce storage requirements, this doesn't make
sense at all. Nyquist sampling theory has covered this problem may
years ago. (Extrapolation cannot recover lost object detail.)
With regards to the claim of improved low light level brightness, short
dwell time on the object for a single pixel system results in worse low
light level performance than array imagers.
These are just a few of the problems of single pixel imagery.
Please visit my web site at www.richardfisher.com
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Date: 11 Oct 2006 08:34:10
From: Greg Crinklaw
Subject: Re: Researchers Aim for Single-Pixel Camera
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Helpful person wrote:
> Greg Crinklaw wrote:
>> What's that supposed to mean? The technique may well have some
>> potential. I'd think someone claiming to be an optical engineer would
>> see that, or at least give us an intelligent reason to think otherwise.
>>
>> --
>> Greg Crinklaw
>
> I believe that single pixel imaging systems date back to the early days
> of television (or perhaps to early oscilloscope days). Both mechanical
> scanning and electronic scanning were used.
>
> Single pixel scanning was used to great effect in the 1970s and 1980s
> for infra red scanners. This later evolved into line scanners and
> eventually arrays of pixels. Another successful single pixel imager,
> still in use today, is the confocal microscope.
>
> With regards to returning to single pixel imaging systems, amongst
> other matters, to reduce storage requirements, this doesn't make
> sense at all. Nyquist sampling theory has covered this problem may
> years ago. (Extrapolation cannot recover lost object detail.)
>
> With regards to the claim of improved low light level brightness, short
> dwell time on the object for a single pixel system results in worse low
> light level performance than array imagers.
>
> These are just a few of the problems of single pixel imagery.
Yeah--I thought a lot of the claims made in the article were rather
fanciful at best myself. Thanks for taking the time to elucidate.
Greg
--
Greg Crinklaw
Astronomical Software Developer
Cloudcroft, New Mexico, USA (33N, 106W, 2700m)
SkyTools: http://www.skyhound.com/cs.html
Observing: http://www.skyhound.com/sh/skyhound.html
Comets: http://www.skyhound.com/sh/comets.html
To reply take out your eye
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Date: 11 Oct 2006 09:13:39
From: Don't Be Evil
Subject: Re: Researchers Aim for Single-Pixel Camera
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Cool. My 1GB SD card can hold 333,333,333 pictures.
Greg
mark@curio.com wrote:
> http://www.livescience.com/technology/061002_single_pixel.html
>
> I think the future of amateur astro-imagers just got brighter! ;)
> Cleardarkskies!
> Orion
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Date: 11 Oct 2006 16:39:43
From: Chris L Peterson
Subject: Re: Researchers Aim for Single-Pixel Camera
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On 11 2006 09:13:39 -0700, "Don't Be Evil" <g626700-gg@yahoo.com >
wrote:
>Cool. My 1GB SD card can hold 333,333,333 pictures.
Why stop there? Repeatedly ZIP each image until it is reduced to just
one bit, and you can store 8 billion images on your card!
_________________________________________________
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com
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