1 // Ceres Solver - A fast non-linear least squares minimizer
2 // Copyright 2015 Google Inc. All rights reserved.
3 // http://ceres-solver.org/
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6 // modification, are permitted provided that the following conditions are met:
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9 // this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above copyright notice,
11 // this list of conditions and the following disclaimer in the documentation
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15 // specific prior written permission.
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29 // Author: sameeragarwal@google.com (Sameer Agarwal)
31 #ifndef CERES_INTERNAL_LINE_SEARCH_MINIMIZER_H_
32 #define CERES_INTERNAL_LINE_SEARCH_MINIMIZER_H_
34 #include "ceres/minimizer.h"
35 #include "ceres/solver.h"
36 #include "ceres/types.h"
37 #include "ceres/internal/eigen.h"
38 #include "glog/logging.h"
43 // Generic line search minimization algorithm.
45 // For example usage, see SolverImpl::Minimize.
46 class LineSearchMinimizer : public Minimizer {
49 State(int num_parameters,
50 int num_effective_parameters)
52 gradient(num_effective_parameters),
53 gradient_squared_norm(0.0),
54 search_direction(num_effective_parameters),
55 directional_derivative(0.0),
61 double gradient_squared_norm;
62 double gradient_max_norm;
63 Vector search_direction;
64 double directional_derivative;
68 ~LineSearchMinimizer() {}
69 virtual void Minimize(const Minimizer::Options& options,
71 Solver::Summary* summary);
74 } // namespace internal
77 #endif // CERES_INTERNAL_LINE_SEARCH_MINIMIZER_H_