CV-Instagram-Filters

Python remake of the Gotham Instagram filter

Four easy steps

Using numpy, scikit-image, and a profound artistic vision (required to copy the most popular Instagram filter available)

Original image

A nice shot, but with a dull colour palette. Really missing a lot of potential detail around the sky and clouds - also colours look desaturated, and white/black balance is off on both ends.

1. Mid tone colour boost

• Lets add some vibrancy.

* Red snow and sky? I don't know about that..

2. Bluer Blacks

• Lets add some depth to the low end.

4. Sharpening the image

Now look at those fluffy trees,

5. Blue channel boost in lower-mids, decrease in upper-mids

6. Finally, add a vignette for that vintage look

Final image on the left, original on the right.

Summary

The depth of colours around the boots is nice, as is the extra contrast on the snow-capped trees. The increased vibrancy has turned the snow and sky an unwanted reddish colour - the vibrancy modification needs to be turned down on the R channel. Vignette looks good however I think i'd like to see it even stronger.

Overall, it's turned a dull shot into a great playful image. All while maintaing true to the original Instagram Gotham filter.

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Acknowledgements

Michele Pratusevich Instagram Filters in 15 Lines of Python (youtube)

And for a better blog on the method with more detail (and pictures) https://www.practicepython.org/blog/2016/12/20/instagram-filters-python.html