Summary of Changes

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This pull request increases the flexibility of the incremental pipeline configuration by allowing users to disable the global bundle adjustment step. Previously, a strict validation required a positive value for the maximum number of global bundle adjustment refinements, preventing its omission. The updated validation now permits a value of zero, which aligns with the intent to make global bundle adjustment an optional process.

Highlights

Global Bundle Adjustment Configuration: Modified the validation check for ba_global_max_refinements from requiring a value strictly greater than zero to allowing a value greater than or equal to zero. This change enables the option to skip global bundle adjustment.

Changelog

src/colmap/controllers/incremental_pipeline.cc
- Relaxed the assertion for ba_global_max_refinements to allow a value of 0.

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