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Why does COLMAP set the Ceres solver tolerance value to 0 in the bundle adjustment option? #2703

@juu-k

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@juu-k

Hello, I was looking at the COLMAP options and noticed that the function_tolerance, gradient_tolerance, and parameter_tolerance values for the Ceres solver used in the Bundle Adjustment step are all set to zero.

image

However, the initial values in the link below have a very small value close to 0 (ex. 1e-6, 1e-10). Why is COLMAP set to 0?

http://ceres-solver.org/nnls_solving.html#_CPPv4N5ceres6Solver7Options18function_toleranceE

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