GeoNaviDiff：局所リーマン航法による拡散特徴への分離意味制御の転送
GeoNaviDiff: Transferring Disentangled Semantic Controls to Diffusion Features via Local Riemannian Navigation
StyleSpaceの分離制御を拡散モデルの局所リーマン軌道に転送し、教師なしで高忠実・因子選択的な実画像編集を実現した研究。
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著者: Tao Sun, Huanting Guo, Baao Xie, Zhou Fang, Qiuyu Chen, Hao Zheng, Wenjun Zeng
分類: cs.CV
原文アブストラクト
Disentangled real-image manipulation requires factor-specific semantic control while preserving image fidelity and non-target content. StyleSpace $S$ provides interpretable controls but is limited by GAN inversion, whereas diffusion models offer stronger image realization without an explicit factorized control basis. We introduce GeoNaviDiff, an unsupervised cross-space framework that transfers disentangled StyleSpace interventions to local Riemannian trajectories in diffusion $h$-space. GeoNaviDiff constructs reconstruction-decoupled supervision by extracting a spherical Log-map tangent from a matched StyleGAN reconstruction-edit pair and parallel-transporting it to the real-image diffusion state. A shared, factor-conditioned Navigator predicts this tangent at inference, while norm-preserving geodesic realization and source-anchored rollout stabilize the reverse process without edited references or factor-specific models. Experiments across multiple datasets show that GeoNaviDiff outperforms the compared methods in fidelity, factor selectivity, edit locality, and trajectory smoothness.
