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DU00000001
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Re: low cost high frame rate?
DU00000001   6/17/2014 11:53:25 AM
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You already were on the right site:

LUPA1300-2 and PYTHON300/500 might fulfill your requirements in terms of resolution, frame rate etc. - though probably not in $$$

DeeCee430
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low cost high frame rate?
DeeCee430   4/28/2014 4:34:49 PM
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Does anyone know of a high-frame-rate image sensor that is low cost (under $100 in small quantities)?  640x480 monochrome resolution is adequate, but 500 fps is required.

I've found the LUPA300 (NOIL1SM0300A), but it is slower and more expensive than desired.



junko.yoshida
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Re: The era of machine vision
junko.yoshida   4/28/2014 12:57:28 PM
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@Larry, I couldn't agree with you more. It always cracks me up when I watch one of those shows -- where a fuzzy picture becomes suddenly crystal clear once treated by some sort of a machine...what happened to the principle of "garbage in, garbage out"?

LarryM99
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Re: The era of machine vision
LarryM99   4/28/2014 12:52:42 PM
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@Junko, it has already been proven on many TV cop shows that image resolution is irrelevant. It has been replaced by the 'enhance image' button that can extract a perfect image from the grainiest source - usually just in time to catch the perpetrator...

Seriously, there are limits to the technology. I got several traffic tickets from San Francisco toll bridges (I live and spend most of my time in San Diego) because someone up there had a partially-obstructed license plate that got resolved to the number on my wife's car.The tickets were forgiven once a real human took a look at the images. I suspect that a good number of people have expectations driven more by TV shows than by reality.

Not all CSI geeks are that hot, people!

junko.yoshida
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Re: Low-cost optics needed too
junko.yoshida   4/28/2014 11:41:15 AM
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@AZskibum, thanks! Much appreciate your sharing the link!

AZskibum
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Re: Low-cost optics needed too
AZskibum   4/28/2014 11:39:57 AM
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It started as an accidental discovery at the Australian National University.

http://www.theregister.co.uk/2014/04/28/polymer_droplets_create_iphone_microscope_lenses/

junko.yoshida
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Re: The era of machine vision
junko.yoshida   4/28/2014 10:52:03 AM
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@Jack,L, thank you for your comment, and your points are well taken.

Indeed, much of the machine vision technologies have been around for a long time. That said, over the years, there have been a good deal of steady advancements on high dynamic range pixels, global shutter CMOS image sensors and fast and accurate column AD converters.

At a time when some of the machine vision technologies already well exploited on factory floors are now getting out on streets with the progress of ADAS, I figured it's time to do a quick reflection on where CMOS image sensors have been.

 

 

 

junko.yoshida
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Re: Low-cost optics needed too
junko.yoshida   4/28/2014 8:35:13 AM
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@AZskibum, that's brilliant. Could you share he name of he researchers who pulled hat off?

J---
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Re: The era of machine vision
J---   4/27/2014 2:34:45 PM
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Seven pages of links, but pretty light on content for an article and frankly this article could have been written 15 years ago with much of the same content.

Image sensor cost has come way down (mostly), but performance is not that much better now than it was 10 years ago in absolute terms of what is readily available. Read rates has gone up, but that has little to do with image sensors but more about analog A/D integration.


License plate reading, etc. was being done 20 years ago for IVHS.

FYI, camera on a stick for endoscopy was first done about 20 years ago as well. Power requirements of NMOS sensors not great for the application. CMOS brought power levels down to make this effective. Not sure what is meant by a "digital" image sensor ... integration of A/D?

 

J---
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Re: The era of machine vision
J---   4/27/2014 2:26:06 PM
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Photochromic glasses that darken in bright light and lighten inside have been around for decades. No knob required but many years ago, there were glasses that electrically darkened just like welding glasses. Massive failure if I remember.

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