I am not going to read through all 328 papers to fact check this, but I'm very confident they did do a "thorough review", that's how you start research like this. There's a bit more detail in the course that this presentation is from:
> As of 2021, we only found two technical papers that showed Afro-textured hair [Bertails et al. 2005; Patrick et al . 2004]. While some technical papers containing Black hair have started to appear since we published our findings [Hsu et al . 2023; Wang et al. 2023], these usually represent relatively unstyled hair. Some styles have started to appear in short talks [Ogunseitan 2022], but a wide range of intricate, sophisticated, and very common hair styles still lie outside the visual language of computer graphics research.
The four papers they mention here are not from SIGGRAPH. The "short talk" was from SIGGRAPH 2022, but as that phrase implies it was a talk and not a paper.
> As of 2021, we only found two technical papers that showed Afro-textured hair [Bertails et al. 2005; Patrick et al . 2004]. While some technical papers containing Black hair have started to appear since we published our findings [Hsu et al . 2023; Wang et al. 2023], these usually represent relatively unstyled hair. Some styles have started to appear in short talks [Ogunseitan 2022], but a wide range of intricate, sophisticated, and very common hair styles still lie outside the visual language of computer graphics research.
- https://dl.acm.org/doi/10.1145/3664475.3664535 (not open access, I can share it if you're interested though)
The four papers they mention here are not from SIGGRAPH. The "short talk" was from SIGGRAPH 2022, but as that phrase implies it was a talk and not a paper.