arXiv:2501.04608eess.IVcs.CV2025-01被引 4

系统分析卷积网络在逆问题中的设计选择,提升可复用性。

Comprehensive Examination of Unrolled Networks for Solving Linear Inverse Problems

  • 统一优化算法与损失函数设计框架,减少自由度
  • 通过大规模消融实验揭示各组件对性能的影响规律
  • 提供工程化配置建议,适合图像重建领域研究者参考

卷积展开网络已在多个计算机视觉和成像任务中广泛应用。尽管其在特定任务中表现优异,但将其迁移到新场景时面临诸多挑战,主要源于设计决策繁多——如优化算法选择、损失函数定义、卷积层数量等,每一项都可能显著影响整体性能。而评估每个选项均需耗时的训练与调优过程,导致探索最优配置成本高昂。本文旨在(1)整合现有展开网络的设计思想,降低用户需做的设计选择数量;(2)开展全面的消融实验,分析各项设计因素对性能的影响,并基于结果提出实用建议。研究结果有助于科研人员高效构建适用于自身任务的展开网络,并快速诊断模型问题。

原文摘要 · Abstract (English)

Unrolled networks have become prevalent in various computer vision and imaging tasks. Although they have demonstrated remarkable efficacy in solving specific computer vision and computational imaging tasks, their adaptation to other applications presents considerable challenges. This is primarily due to the multitude of design decisions that practitioners working on new applications must navigate, each potentially affecting the network's overall performance. These decisions include selecting the optimization algorithm, defining the loss function, and determining the number of convolutional layers, among others. Compounding the issue, evaluating each design choice requires time-consuming simulations to train, fine-tune the neural network, and optimize for its performance. As a result, the process of exploring multiple options and identifying the optimal configuration becomes time-consuming and computationally demanding. The main objectives of this paper are (1) to unify some ideas and methodologies used in unrolled networks to reduce the number of design choices a user has to make, and (2) to report a comprehensive ablation study to discuss the impact of each of the choices involved in designing unrolled networks and present practical recommendations based on our findings. We anticipate that this study will help scientists and engineers design unrolled networks for their applications and diagnose problems within their networks efficiently.

逆问题展开网络消融实验图像重建

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