Safari_Matrix-Free_Shared_Intrinsics_Bundle_Adjustment@CVPR2025@CVF

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#1 Matrix-Free Shared Intrinsics Bundle Adjustment [PDF] [Copy] [Kimi] [REL]

Author: Daniel Safari

Research on bundle adjustment has focused on photo collections where each image is accompanied by its own set of camera parameters. However, real-world applications overwhelmingly call for shared intrinsics bundle adjustment (SI-BA) where camera parameters are shared across multiple images. Utilizing overlooked optimization opportunities specific to SI-BA, most notably matrix-free computation, we present a solver that is eight times faster than alternatives while consuming a tenth of the memory. Additionally, we examine reasons for BA instability under single-precision computation and propose minimal mitigations.

Subject: CVPR.2025 - Poster