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arXiv · 2606.10839

HarmoView: Harmonizing Multi-View Constraints for Identity-Consistent Video Generation

Cong Wang·Zhentao Yu·Hongmei Wang·Weicong Liang·Zixiang Zhou·Zilin Yang·Jiarong Ou·Rui Chen·Yuan Zhou·Qinglin Lu
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Abstract

Current identity-consistent video generation methods struggle to preserve appearance fidelity under large viewpoint changes. While introducing multi-view reference input offers a natural solution, progress remains constrained by the lack of effective frameworks for multi-view inputs and the scarcity of multi-view data. We address these challenges by proposing HarmoView, a robust framework for identity-consistent video generation that effectively integrates multi-view cues through three architectural refinements complemented by a staged training curriculum. Specifically, we first introduce Multi-level Feature Injection to anchor identity fidelity; by injecting raw ViT features from frontal references alongside text tokens via cross-attention, MFI provides persistent low-level appearance anchors that complement the high-level identity features within DiT blocks, leading to enhanced identity preservation. Then, we employ learnable proxy tokens to unify heterogeneous reference layouts across single-/multi-view settings while simultaneously resolving the reference-view mismatch problem. Jump-RoPE is further developed for identity-wise feature isolation to reduce identity crosstalk. To activate these structural capabilities while preserving the original generative priors, we propose the Progressive View Curriculum. This four-stage training strategy employs view dropout to facilitate a stable transition from vanilla T2V generation to high-fidelity, identity-persistent spatial reasoning. Furthermore, we construct a large-scale multi-view dataset to address the issue of data scarcity. Extensive evaluation on our multi-view benchmark, comprising 100 manually-curated cases spanning 52 unique identities, demonstrates that HarmoView significantly outperforms open-source baselines and matches leading closed-source engines, achieving state-of-the-art performance in identity-consistent video generation.

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Cong Wang, Zhentao Yu, Hongmei Wang, Weicong Liang, Zixiang Zhou, Zilin Yang, Jiarong Ou, Rui Chen, Yuan Zhou, Qinglin Lu. 2026-06-22. HarmoView: Harmonizing Multi-View Constraints for Identity-Consistent Video Generation. https://arxiv.org/abs/2606.10839

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