IEEE CVPR 2011
TechTalks from event: IEEE CVPR 2011
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Orals 1C Scene Understanding and 3D Structures - Ballroom 1 3:30-5:10
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Discrete-Continuous Optimization for Large-scale Structure from MotionRecent work in structure from motion (SfM) has successfully built 3D models from large unstructured collections of images downloaded from the Internet. Most approaches use incremental algorithms that solve progressively larger bundle adjustment problems. These incremental techniques scale poorly as the number of images grows, and can drift or fall into bad local minima. We present an alternative formulation for SfM based on ?nding a coarse initial solution using a hybrid discrete-continuous optimization, and then improving that solution using bundle adjustment. The initial optimization step uses a discrete Markov random ?eld (MRF) formulation, coupled with a continuous LevenbergMarquardt re?nement. The formulation naturally incorporates various sources of information about both the cameras and the points, including noisy geotags and vanishing point estimates. We test our method on several large-scale photo collections, including one with measured camera positions, and show that it can produce models that are similar to or better than those produced with incremental bundle adjustment, but more robustly and in a fraction of the time. -
- All Sessions
- CVPR Award Papers
- Orals 1A Image and Video Retrieval - Ballroom 1 10:30-12:10
- Orals 1B Computational Photography - Ballroom 2 10:30-12:10
- Orals 1C Scene Understanding and 3D Structures - Ballroom 1 3:30-5:10
- Orals 1D Video Analysis - Ballroom 2 3:30 - 5:10
- Orals 2A Object Detection - 10:30-12:10 Ballroom 1
- Orals 2B - Optimization Methods - 10:30-12:10 Ballroom 2
- Orals 2C - Segmentation and Grouping - 3:30 -5:10 Ballroom 1
- Orals 2D - Motion and Tracking - 3:30-5:10 Ballroom 2
- Orals 3A Object Recognition - 10:30 - 12:10 Ballroom 1
- Orals 3B Image Modeling - 10:30 - 12:10 Ballroom 2
- Orals 3C Statistical Methods and Learning 3:30-5:10 Ballroom 1
- Orals 3D Applications 3:30-5:10 Ballroom 2
- CVPR Poster Session