arXiv:2506.04803cs.CV2025-06被引 11

统一的RANSAC框架,跨任务提升几何估计精度

SupeRANSAC: One RANSAC to Rule Them All

  • 提出统一的RANSAC流水线,整合采样与评分优化
  • 在基础矩阵估计上平均提升6 AUC点,超越现有方法
  • 适合需要高鲁棒性的视觉定位与重建任务

鲁棒估计是计算机视觉的核心,尤其在运动恢复结构(SfM)和同时定位与地图构建(SLAM)中。RANSAC及其变体是处理含异常值数据中几何模型(如单应性、基础/本质矩阵、绝对/刚性位姿)估计的黄金标准。尽管RANSAC看似简单,但在不同任务中保持一致高性能仍具挑战。近期研究多聚焦于改进特定组件(如采样、评分),但整体性能往往更受实现细节和问题特化优化的影响。例如,OpenCV和PoseLib等主流框架在某些任务表现优异,但在其他任务落后。本文提出SupeRANSAC,一种新型统一的RANSAC流水线,并深入分析使RANSAC在单应性、基础/本质矩阵、绝对/刚性位姿估计等任务中有效的技术。该方法设计用于跨任务保持高精度,在基础矩阵估计上平均提升6 AUC点,显著优于当前最优方法。我们在多个任务和数据集上验证了其显著性能提升。代码已开源。

原文摘要 · Abstract (English)

Robust estimation is a cornerstone in computer vision, particularly for tasks like Structure-from-Motion and Simultaneous Localization and Mapping. RANSAC and its variants are the gold standard for estimating geometric models (e.g., homographies, relative/absolute poses) from outlier-contaminated data. Despite RANSAC's apparent simplicity, achieving consistently high performance across different problems is challenging. While recent research often focuses on improving specific RANSAC components (e.g., sampling, scoring), overall performance is frequently more influenced by the "bells and whistles" (i.e., the implementation details and problem-specific optimizations) within a given library. Popular frameworks like OpenCV and PoseLib demonstrate varying performance, excelling in some tasks but lagging in others. We introduce SupeRANSAC, a novel unified RANSAC pipeline, and provide a detailed analysis of the techniques that make RANSAC effective for specific vision tasks, including homography, fundamental/essential matrix, and absolute/rigid pose estimation. SupeRANSAC is designed for consistent accuracy across these tasks, improving upon the best existing methods by, for example, 6 AUC points on average for fundamental matrix estimation. We demonstrate significant performance improvements over the state-of-the-art on multiple problems and datasets. Code: https://github.com/danini/superansac

几何估计RANSAC位姿估计鲁棒拟合

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