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Night Sight for Pixel phones

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Re: Night Sight for Pixel phones

#11

Post by jessriedel »

londons_explore wrote: post #2

Prior work at Google Research before it made it into the product: https://ai.googleblog.com/2017/04/experimental-nighttime-pho... And by the original researcher in 2016: https://www.youtube.com/watch?v=S7lbnMd56Ys

The example images at your first link are much more informative than the OP link. Photo pairs should be compared after normalizing the total brightness of each image file. (Heck, I could take a single photo and display it at two different brightness settings and it would give basically same impression as the OP article to anyone not looking super carefully.)

Re: Night Sight for Pixel phones

#12

Post by nanomonkey »

londons_explore wrote: post #4

I would like super sensitive cameras like this to be used inside fridges to see the very faint glow of food going off. Chemical reactions by bacteria breaking down food produce light, enough for humans to see in only the darkest of places (if you live in a city, you won't ever encounter dark enough situations). A camera simulating a 1 hour exposure time in a closed refrigerator ought to be able to see it pretty easil…

On a similar note, it would be nice if some of the drawers of the fridge had red LED lights to keep leafy greens photosynthesizing, to keep them green.

Re: Night Sight for Pixel phones

#13

Post by yorwba »

londons_explore wrote: post #4

I would like super sensitive cameras like this to be used inside fridges to see the very faint glow of food going off. Chemical reactions by bacteria breaking down food produce light, enough for humans to see in only the darkest of places (if you live in a city, you won't ever encounter dark enough situations). A camera simulating a 1 hour exposure time in a closed refrigerator ought to be able to see it pretty easil…

Reading between the lines of [1], bioluminescence is used to detect bacteria/fungi/other organisms in food, but only by adding luciferase to a sample and measuring the light emitted when luciferase reacts with ATP. Because living organisms contain ATP, the ATP content can be used as a proxy for contamination by microorganisms.

But I didn't find anything on bioluminescence occurring naturally in the kinds of bacteria you'd want to be warned about. Did you ever personally see glowing food?

[1] http://cdn.intechopen.com/pdfs/27440/InTech-Use_of_atp_biolu...

Re: Night Sight for Pixel phones

#14

Post by jjcm »

londons_explore wrote: post #2

Prior work at Google Research before it made it into the product: https://ai.googleblog.com/2017/04/experimental-nighttime-pho... And by the original researcher in 2016: https://www.youtube.com/watch?v=S7lbnMd56Ys

That video is a great demo. Very simple, very informative, and accurate from a data point.

Re: Night Sight for Pixel phones

#15

Post by fsargent »

nanomonkey wrote: post #12
londons_explore wrote: post #4

I would like super sensitive cameras like this to be used inside fridges to see the very faint glow of food going off. Chemical reactions by bacteria breaking down food produce light, enough for humans to see in only the darkest of places (if you live in a city, you won't ever encounter dark enough situations). A camera simulating a 1 hour exposure time in a closed refrigerator ought to be able to see it pretty easil…

On a similar note, it would be nice if some of the drawers of the fridge had red LED lights to keep leafy greens photosynthesizing, to keep them green.

Can you link to some research on that? I'd love to throw together a hack where you use LED light strips to do this. Isn't it possible that the light would increase bacteria though? https://biology.stackexchange.com/questions/66878/blue-light...

Re: Night Sight for Pixel phones

#17

Post by rdtsc »

> Google says that its machine learning detects what objects are in the frame, and the camera is smart enough to know what color they are supposed to have.

That is absolutely impressive.

The color and text on the fire extinguishers along with the texture detail seen in the headphones in the last picture are just stunning. Congratulations to anyone who worked on this project!

Re: Night Sight for Pixel phones

#18

Post by dhruvp »

If you're interested in learning more about this stuff the head of the Pixel team (Marc Levoy - Prof emeritus at Stanford) has an entire lecture series on this stuff from a class he ran at Google. They are here along with lecture notes:https://sites.google.com/site/marclevoylectures/home

What's really cool is you can see him talk about a lot of these ideas well before they made it into the Pixel phone

Re: Night Sight for Pixel phones

#20

Post by retSava »

yorwba wrote: post #13
londons_explore wrote: post #4

I would like super sensitive cameras like this to be used inside fridges to see the very faint glow of food going off. Chemical reactions by bacteria breaking down food produce light, enough for humans to see in only the darkest of places (if you live in a city, you won't ever encounter dark enough situations). A camera simulating a 1 hour exposure time in a closed refrigerator ought to be able to see it pretty easil…

Reading between the lines of [1], bioluminescence is used to detect bacteria/fungi/other organisms in food, but only by adding luciferase to a sample and measuring the light emitted when luciferase reacts with ATP. Because living organisms contain ATP, the ATP content can be used as a proxy for contamination by microorganisms. But I didn't find anything on bioluminescence occurring naturally in the kinds of bacteria…

Luciferase, easily the coolest (hottest?) name I've come across in a while. Here's the wiki:

https://en.wikipedia.org/wiki/Luciferase

"Luciferase is a generic term for the class of oxidative enzymes that produce bioluminescence"

and,

"Bioluminescence is the production and emission of light by a living organism"

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