# SuperFace: Preference-Aligned Facial Expression Estimation Beyond Pseudo Supervision

Source: [SuperFace: Preference-Aligned Facial Expression Estimation Beyond Pseudo Supervision](<https://www.sota2.com/research/paper/69fd6e1a5497b3b670c89464>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2026-05-09T05:00:12.752Z

Authors: Zejian Kang, Xuanyang Xu, Wentao Yang, Kai Zheng, Yuanchen Fei, Hongyuan Zou, Hui Shan, Shuo Yang, Xiangru Huang

Published: 2026-05-07T12:57:49.000Z

## Abstract

Accurate facial estimation is crucial for realistic digital human animation, and ARKit blendshape coefficients offer an interpretable representation by mapping facial motions to semantic animation controls. However, learning high-quality ARKit coefficient prediction remains limited by the absence of reliable ground-truth supervision. Existing methods typically rely on capture software such as Live Link Face to provide pseudo labels, which may contain noisy activations, biased coefficient magnitudes, and missing or inaccurate facial actions. Consequently, models trained with supervised learning tend to reproduce imperfect pseudo labels rather than optimize for perceptual expression fidelity. In this paper, we propose SuperFace, a preference-driven framework that moves ARKit facial expression estimation from pseudo-label imitation toward human-aligned perceptual optimization. Instead of treating software-estimated coefficients as fixed ground truth, SuperFace uses them only as an initialization and further improves coefficient prediction through human preference feedback on rendered facial expressions. By aligning the model with perceptual judgments rather than numerical pseudo labels, SuperFace enables more visually faithful and expressive facial animation. Experiments show that SuperFace improves expression fidelity over Live Link Face supervision, demonstrating the effectiveness of preference-driven optimization for semantic facial action prediction.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

- [Facial Expression Estimation on KeyframeFace held-out subjects (test)](<https://www.sota2.com/research/sota/facial-expression-estimation-on-keyframeface-held-out-subjects-test.md>): Facial Expression Estimation; KeyframeFace held-out subjects (test); Win Rate: 61.07.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2605.06179>)

[PDF](<https://arxiv.org/pdf/2605.06179.pdf>)