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Raspberry Pi Car Speed Detector

(gregtinkers.wordpress.com)
187 points mhss | 11 comments | 17 May 16 15:00 UTC | HN request time: 0s | source | bottom
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post_break ◴[17 May 16 18:02 UTC] No.11715818[source]▶
I need a raspberry pi that can monitor parking spots so I know if I have a spot waiting for me when I get off of work. Of course I don't know how to code so it will probably never happen.

edit: I meant parking spaces outside of my apartment.

replies(2): >>11715921 #>>11716295 #
mandeepj ◴[17 May 16 18:13 UTC] No.11715921[source]▶
You at least need a drone with camera for it. You would need to implement some object recognition on the images transmitted by the drone
replies(1): >>11715935 #
1. post_break ◴[17 May 16 18:15 UTC] No.11715935[source]▶
Wut. The parking spaces are viewable by my apartment window.
replies(2): >>11715969 #>>11716111 #
2. lightbritefight ◴[17 May 16 18:19 UTC] No.11715969[source]▶
Point a camera at the spots when unoccupied.Specify the spots exact coordinates to the camera. Set color as baseline. If the color changes by 50% or more, they are occupied. Send alert when all occupied, or when not all occupied.

Now, learn to code it.

replies(4): >>11715989 #>>11716002 #>>11717052 #>>11717274 #
3. post_break ◴[17 May 16 18:22 UTC] No.11715989[source]▶
Well I've got the raspberry pi, mjpeg, a camera that works. Just need to make the logic work. Here is what I'm stuck on. http://i.imgur.com/pIy3QNt.jpg
replies(1): >>11716553 #
4. Pxtl ◴[17 May 16 18:24 UTC] No.11716002[source]▶
The challenge, of course, is snow.
replies(1): >>11716093 #
5. khedoros ◴[17 May 16 18:34 UTC] No.11716093{3}[source]▶
Also: clouds, nighttime, people walking across the lot, and any other color changes that aren't related to other vehicles being parked in the spots.
replies(1): >>11716345 #
6. mandeepj ◴[17 May 16 18:35 UTC] No.11716111[source]▶
Did not you said "I need a raspberry pi that can monitor parking spots so I know if I have a spot waiting for me when I get off of work."
7. TheOtherHobbes ◴[17 May 16 19:01 UTC] No.11716345{4}[source]▶
Plug in a webcam, and upload a photo to a server every minute or so. Or put the Pi online.

Humans are still better at parking spot recognition than $35 hardware.

Of course you'll need a camera with a time machine so you know the spot will be free when you arrive, and not just when you set out.

replies(1): >>11717015 #
8. cake ◴[17 May 16 19:26 UTC] No.11716553{3}[source]▶
Or just remotely send yourself a photo of your parking lot.
9. post_break ◴[17 May 16 20:15 UTC] No.11717015{5}[source]▶
IFTTT api to create geo fence on my route home to poll the Pi "are there spaces left?" with an email or response yes or no with a photo at the current time.
10. oh_sigh ◴[17 May 16 20:18 UTC] No.11717052[source]▶
You could also zoom in so you would be looking at a car if it is parked there, and then upload the image to the microsoft caption bot service. It's pretty good at recognizing cars already, and you can just search the result for the word "car"
11. awesomerobot ◴[17 May 16 20:48 UTC] No.11717274[source]▶
Couldn't you just get a decent security camera and uh, well... look?