>>PaulHo+(OP)
The original post: https://www.reddit.com/r/electronics/comments/1olyu7r/i_made...

The video on Reddit: https://www.reddit.com/r/3Dprinting/comments/1olyzn6/i_made_...

>>PaulHo+(OP)
Compressed sensing! What Terence Tao uses to sell math funding!!

https://www.youtube.com/watch?v=EE9AETSoPHw&t=44

https://www.instructables.com/Single-Pixel-Camera-Using-an-L...

(Okay not the same guy, but I wanted to share this somewhat related "extreme" camera project)

>>ACCoun+tl9
To anyone wondering:

BCI == Brain-computer interface

https://en.wikipedia.org/wiki/Brain–computer_interface

>>anothe+se9
One of the comments from the creator answered one of my questions https://www.reddit.com/r/3Dprinting/comments/1olyzn6/comment...:

> Do you mean the refresh rate should be higher? There's two things limiting that: > - The sensor isn't optimized for actually reading out images, normally it just does internal processing and spits out motion data (which is at high speed). You can only read images at about 90Hz > - Writing to the screen is slow because it doesn't support super high clock speeds. Drawing a 3x scale image (90x90 pixels) plus reading from the sensor, I can get about 20Hz, and a 1x scale image (30x30 pixels) I can get 50Hz.

I figured there would be limitations around the second, but I was hoping the former wasn't such a big limit.

>>PaulHo+(OP)
Direct link to the reddit post:

https://old.reddit.com/r/electronics/comments/1olyu7r/i_made...

>>ACCoun+Fs9
they do read my mind at least to some extent -> "The paper concludes that it is possible to detect changes in the thickness and the properties of the muscle solely by evaluating the reflection coefficient of an antenna structure." https://ieeexplore.ieee.org/document/6711930

>>eugene+8z9
On Reddit, author says "The preview is shown at 20fps for a 3x scale image (90x90 pixels) and 50fps for a 1x scale image. This is due to the time it takes to read the image data from the sensor (~10ms) and the max write speed of the display.", and adds that optical mice motion tracking goes to 6400 fps for this sensor but you can't actually transmit image at that rate.

https://old.reddit.com/r/electronics/comments/1olyu7r/i_made...

>>SwtCyb+mT9
The brain really is quite a machine. I've personally had a retinal tear lasered. It's well within my peripheral vision, and the lasering of course did more damage (but prevents it from spreading). How much of this can I see? Nothing! My peripheral vision appears continuous. Probably I'd miss a motion event only visible to that eye only in that particular zone. Not to mention the enormous number of "floaters" one gets especially by my age (58). Sometimes you see them but for the most part the brain just filters them out.

Where this becomes relevant is when you consider depixellation. True blur can't be undone, but pixellation without appropriate antialiasing filtering...

https://www.youtube.com/watch?v=acKYYwcxpGk

So if your 30x30 camera has sharp square pixels with no antialiasing filter in front of the sensor, I'll bet the brain would soon learn to "run that depixellation algorithm" and just by natural motion of the camera, learn to recognize finer detail. Of course that still means training the brain to recognize 900 electrodes, which is beyond the current state of the art (but 16x16 pixels aren't and the same principle can apply there).

>>PaulHo+(OP)
vaguely related but exponentially more impressive

camera the size of a grain of rice with 320x320 resolution

https://ams-osram.com/products/sensor-solutions/cmos-image-s...

>>ck2+Rga
Woah, “wafer level optics” sounds really fancy

https://www.mouser.com/datasheet/3/5912/1/NanEyeC_DS000503_5...

>>SwtCyb+mT9
In some situations, you can trade resolution for frequency and maintain quality. 1-bit audio is a thing:

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