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In Embedded Vision, Sensors Rule, Part 1

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Sheetal.Pandey
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In Embedded Vision, Sensors Rule
Sheetal.Pandey   8/19/2013 9:38:52 AM
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Quite agree, image sensors are one of the big thing in electronics industry. Now the smartphone are almost becoming necessity, image sensors would play a great role. More and more clarity of the image is becoming a requirement. And there are so many applications where these image sensors are used and almost critical.

junko.yoshida
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image sensors for embedded vision
junko.yoshida   8/19/2013 9:39:25 AM
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This is fascinating.

I, too, used to think that when image sensors used in ordinary digital cameras today can capture 20 Megapixels or more, the challenge for embeded vision lies in algorithms, not in sensors.

But when I hear about image sensors capturing 1,000 frames per second, i suddenly realize we are no longer talking about conventional image sensors for conventional digital cameras.

What's needed is more detailed analysis on what image sensors need to capture, so that embedded visions have meaningful information to extract and decode.

 

junko.yoshida
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embedded vision for automotive
junko.yoshida   8/19/2013 9:49:13 AM
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Another thing I have been thinking about lately is embedded vision for automotive.

I found it interesting when I learned that visual information captured by cameras (installed inside a car) can be compressed if that info is used for...say...parking assistance. 

But if the visual information is used for lane changing or recognizing a person in the crossing, that information needs to be uncompressed. 

There must be a vast difference in how machines (in this case, cars) decode visual information vs. how a human being processes the visual information.

Sheetal.Pandey
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Re: embedded vision for automotive
Sheetal.Pandey   8/19/2013 1:38:48 PM
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Quite agree, embedded vision in automotive is something that can do wonders and would be an attractive feature.

Susan Rambo
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Re: embedded vision for automotive
Susan Rambo   8/20/2013 4:09:10 AM
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Agreed. Embedded vision in automobiles is pretty cool---as long as it works. What happens when the car ages? Does its vision get bad? I supposed the systems need tuning or testing every so often. Mechanics will have to be embedded systems engineers.

vratford
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Re: embedded vision for automotive
vratford   8/20/2013 7:19:59 AM
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I don't think Presbyopia (or it's electronic equivalent) will be a problem. The active systems that take control have radar & other sensors to complement the image sensors & diagnostics for the system. Surely mechanics will need to become more like applications engineers with specialization likely.

vratford
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Re: embedded vision for automotive
vratford   8/20/2013 7:27:52 AM
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Yes. Pixel rate processing will likely be replaced by Metadata in which the pixels are preprocessed depending on the applications. Professor Ishikawa maintains that the sensors, system architecture and algorithms are all interrelated and need to be optimized for high frame rate applications in order to achieve this. More on this in a future blog.

vratford
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Re: In Embedded Vision, Sensors Rule
vratford   8/20/2013 7:35:11 AM
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Users are becoming more knowledgeable and likely to move beyond just counting megapixels and consider dynamic range, shutter speed, zoom, etc are likely to move to the front. Consumers will need to be educated but many already have experience with digital camera's. One interesting side effect of more (and smaller) pixels is a lower light level (photons) that can be sensed. I don't think that Moore's Law applies for image sensors.

junko.yoshida
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Re: embedded vision for automotive
junko.yoshida   8/20/2013 8:32:46 AM
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Thanks for your helpful response. It makes sense. Looking forward to learning about all the interrelations, and what needs to be developed further. 

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