Appreciate the View: A Task-Aware Evaluation Framework for Novel View Synthesis

• URL: http://arxiv.org/abs/2511.12675v1
• Date: Sun, 16 Nov 2025 16:28:08 GMT
• Title: Appreciate the View: A Task-Aware Evaluation Framework for Novel View Synthesis
• Authors: Saar Stern, Ido Sobol, Or Litany,
• Abstract summary: Novel View Synthesis (NVS) aims to generate realistic images of a given content from unseen viewpoints.<n>Existing evaluation metrics struggle to assess whether a generated image is both realistic and faithful to the source view.<n>We introduce two complementary evaluation metrics: a reference-based score, $D_textPRISM$, and a reference-free score, $textMMD_textPRISM$.
• Score: 15.922599086027098
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The goal of Novel View Synthesis (NVS) is to generate realistic images of a given content from unseen viewpoints. But how can we trust that a generated image truly reflects the intended transformation? Evaluating its reliability remains a major challenge. While recent generative models, particularly diffusion-based approaches, have significantly improved NVS quality, existing evaluation metrics struggle to assess whether a generated image is both realistic and faithful to the source view and intended viewpoint transformation. Standard metrics, such as pixel-wise similarity and distribution-based measures, often mis-rank incorrect results as they fail to capture the nuanced relationship between the source image, viewpoint change, and generated output. We propose a task-aware evaluation framework that leverages features from a strong NVS foundation model, Zero123, combined with a lightweight tuning step to enhance discrimination. Using these features, we introduce two complementary evaluation metrics: a reference-based score, $D_{\text{PRISM}}$, and a reference-free score, $\text{MMD}_{\text{PRISM}}$. Both reliably identify incorrect generations and rank models in agreement with human preference studies, addressing a fundamental gap in NVS evaluation. Our framework provides a principled and practical approach to assessing synthesis quality, paving the way for more reliable progress in novel view synthesis. To further support this goal, we apply our reference-free metric to six NVS methods across three benchmarks: Toys4K, Google Scanned Objects (GSO), and OmniObject3D, where $\text{MMD}_{\text{PRISM}}$ produces a clear and stable ranking, with lower scores consistently indicating stronger models.

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