carspeed.py | cars passing in front of the Raspberry Pi Picamera
kandi X-RAY | carspeed.py Summary
kandi X-RAY | carspeed.py Summary
This program for the Raspberry Pi determines the speed of cars moving through the Picamera's field of view. An image of the car and labeled with its speed is saved.
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Top functions reviewed by kandi - BETA
- Draw rectangle
- Put text on image
- Record the speed
carspeed.py Key Features
carspeed.py Examples and Code Snippets
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QUESTION
I've just built a Raspberry Pi as a basic speed camera and want to make some tweaks to existing code. I've programmed before in various languages on and off for lots of projects, but not as a dedicated job.
The code that I'm using is this (it's quite long so I haven't posted it here):
https://github.com/gregtinkers/carspeed.py
I'd like to start by using line_profiler to help tweak the existing code where possible, slowly allowing me to make changes and learn how it works.
I've tried converting the existing script so that;
- The entire code is held within a 'main()' function, including the existing functions,
- Moving the code below the existing function definitions into a new 'def main():' function,
These result in me changing a lot of the existing code to get it to work, which it invariably doesn't and I end up getting lost!
I've followed various guides on using line_profiler and have it working with the existing defined functions, but I want to extend that to the rest of the code.
Am I missing a very easy method of doing this? How should I approach it?
...ANSWER
Answered 2020-Aug-18 at 19:30I cannot test the code as I do not have a Rasberry Pi, but I would try this starting at line 57 (after your existing function defs). Basically you are defining a main() function, then calling it if the file is called as a script (What does if __name__ == "__main__": do?).
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Install carspeed.py
You can use carspeed.py like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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