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Unread 14-10-2013, 22:25
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thephpdev thephpdev is offline
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AKA: Josh Larson
FRC #2502 (Talon Robotics)
Team Role: Programmer
 
Join Date: Mar 2012
Rookie Year: 2012
Location: Eden Prairie, MN
Posts: 16
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Re: Raspberry Pi + Camera Module = New Vision System?

Quote:
Originally Posted by yash101 View Post
Do you guys know of any cheap substitute to the raspberry pi camera, that doesn't use USB?
You can use the Camera Module that is $25.

As a status update, I started utilizing OpenCV and the UV4L driver to get a /dev/video0 input stream. Under 320x240 I got about 10-12 frames per second while processing and rotating the image (the pi wasn't oriented correctly for my setup), and about 3 FPS under 640x480.

The goal was to find mini retro-reflective targets that resembled the targets from last year. The algorithm was converting to HSV, thresholding, then searching for contours. From there I filtered out the bad polygons and I was left with (mostly, occasionally I would get the outlier) my two targets.