A large part of my projects is research and this page is dedicated to content written by others, which I particularly enjoyed reading:

LearnOpenGL
Incredible guide for getting started with graphics programming and also offers a very good explanation of physically based rendering here.

Strolls with my Dog
This is probably my favorite blog and offers technical articles about photography.

Filament Rendering Engine
While I’ve never used this engine, their technical writeup is great.

TSC1304
An open source project for building a low cost linear sensor which I used in my spectrometer project.

CUDA HGEMM
Article about an open source implementation of HGEMM (Half-precision General Matrix Multiplication) with various optimization techniques. Requires some knowledge about CUDA / GPU programming.

Photometric Stereo Survey
A survey of photometric stereo techniques. This provides a really good overview of the topic.

A Deep Dive into Nanite Virtualized Geometry (Video)
Very interesting explanation of Nanite.