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Computer Implementations for Irregular Gears

Posted: February 26, 2013 / Updated: May 20, 2016

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There are two functional versions of the gear maker: the original in MATLAB, and a cleaner, leaner one in Python. I recommend the Python one.


Python

You can head over to my Github and get the source code! There's no compiled binary or anything, but if you have Python installed it shouldn't be too much fuss.

Operation is described in the readme file. Change some of the parameters at the top of main.py if you wish. Then, run main.py; you will be prompted for an image file (your input gear). Soon you'll be prompted to save your output gear as a separate image file. That's all there is to it!

This work is licensed under the Revised BSD license.




MATLAB

The original version written in MATLAB. Download it here, feel free to play around with it.

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 Unported License.

The .rar file includes two sample images and a not-totally-intuitive MATLAB GUI. If the .m and .fig files are in the same folder, you should be able to just open the .m file in MATLAB and run it. You can change the gear ratio, number of steps, and "tooth size" (how far your input gear image can spill out over the circle).

Unless you use a completely bonkers huge number of steps, the output from the program won't be perfect. It gets run through a median filter to do some denoising without messing up the edges, but there will still be speckles around it.



NOTES: