Extreme portraiture often utilizes extreme lighting ratios (High Key vs. Low Key) to compensate for the loss of environmental context.
Assuming you are looking for an academic-style research paper on the concept of "Portrait Extreme" (which typically refers to in portraiture or the EXtreme facial alignment dataset), I have drafted a comprehensive review paper below. portrait extreme
Portrait Extreme photography often features: Borrows from horror cinema: stitches, extra eyes, removable
Achieving an "extreme" look requires specific technical and artistic choices that differentiate it from standard headshots. Borrows from horror cinema: stitches
Beyond the Human Form: A Comprehensive Review of Extreme Portraiture and High-Dynamic Range Facial Reconstruction
In the field of Computer Vision, "Portrait Extreme" often refers to the handling of "extreme head poses" (profile views, upward/downward gazes). The landmark paper “Face Alignment Across Large Poses: A 3D Total Solution” (Zhu et al., CVPR) introduced the 300W-LP dataset, often benchmarked as the "EXtreme" dataset.
Borrows from horror cinema: stitches, extra eyes, removable skin. Example: Joel-Peter Witkin’s photographs featuring cadavers, intersex individuals, or carnival “freaks.”