Tuomas Siipola Articles Projects

Welcome to my website. You can contact me by tuomas ät zee pee el döt ef eye.


Here's my latest articles mostly related to programming:

Converting rotation matrices to angles

Tutorial on converting rotation matrices to angles in two and three dimensions.

Aligning point patterns with Kabsch–Umeyama algorithm

Description and implementation of Kabsch–Umeyama algorithm for finding the optimal translation, rotation and scaling between two paired sets of points.

Pixelated images in SVG

Investigating how to render pixelated raster graphics such as pixel art in SVG images.

Exif orientation in different formats

Investigating how JPEG, WebP, PNG and AVIF store Exif metadata and do web browsers support Exif orientation in all these formats.

Chroma subsampling and JPEG sampling factors

Comparing different ways of notating chroma subsampling and trying to understand how these are related to JPEG sampling factors.

Drawing musical keyboards

Studying different ways of drawing musical keyboards in music software.

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Here's some of my free and open source projects:

For other random unfinished projects, check out github.com/siiptuo and git.zpl.fi.