// GTSAM namespaces and symbols
using namespace gtsam;
using symbol_shorthand::C; // Camera
using symbol_shorthand::P; // 3D points
// Define the SfM camera type (Pose + Cal3Bundler)
using SfmCamera = PinholeCamera<Cal3Bundler>;
// Function declaration for GTSAM bundle adjustment benchmark
benchmark_utils::BenchmarkResult ;