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Main Authors: Liang, Yuanbang, Chen, Zhengwen, Lai, Yu-Kun
Format: Preprint
Published: 2026
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Online Access:https://arxiv.org/abs/2604.18804
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author Liang, Yuanbang
Chen, Zhengwen
Lai, Yu-Kun
author_facet Liang, Yuanbang
Chen, Zhengwen
Lai, Yu-Kun
contents Latent Diffusion Models (LDMs) achieve high-fidelity synthesis but suffer from latent space brittleness, causing discontinuous semantic jumps during editing. We introduce a Riemannian framework to diagnose this instability by analyzing the generative Jacobian, decomposing geometry into \textit{Local Scaling} (capacity) and \textit{Local Complexity} (curvature). Our study uncovers a \textbf{``Geometric Decoupling"}: while curvature in normal generation functionally encodes image detail, OOD generation exhibits a functional decoupling where extreme curvature is wasted on unstable semantic boundaries rather than perceptible details. This geometric misallocation identifies ``Geometric Hotspots" as the structural root of instability, providing a robust intrinsic metric for diagnosing generative reliability.
format Preprint
id arxiv_https___arxiv_org_abs_2604_18804
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Geometric Decoupling: Diagnosing the Structural Instability of Latent
Liang, Yuanbang
Chen, Zhengwen
Lai, Yu-Kun
Computer Vision and Pattern Recognition
Artificial Intelligence
Latent Diffusion Models (LDMs) achieve high-fidelity synthesis but suffer from latent space brittleness, causing discontinuous semantic jumps during editing. We introduce a Riemannian framework to diagnose this instability by analyzing the generative Jacobian, decomposing geometry into \textit{Local Scaling} (capacity) and \textit{Local Complexity} (curvature). Our study uncovers a \textbf{``Geometric Decoupling"}: while curvature in normal generation functionally encodes image detail, OOD generation exhibits a functional decoupling where extreme curvature is wasted on unstable semantic boundaries rather than perceptible details. This geometric misallocation identifies ``Geometric Hotspots" as the structural root of instability, providing a robust intrinsic metric for diagnosing generative reliability.
title Geometric Decoupling: Diagnosing the Structural Instability of Latent
topic Computer Vision and Pattern Recognition
Artificial Intelligence
url https://arxiv.org/abs/2604.18804