Function WriteBoundingBox

src/colmap/exe/model.cc:70–100

}

void WriteBoundingBox(const std::filesystem::path& reconstruction_path,
                      const Eigen::AlignedBox3d& bbox,
                      const std::string& suffix = "") {
  const Eigen::Vector3d extent = bbox.diagonal();
  // write axis-aligned bounding box
  {
    const auto path = reconstruction_path / ("bbox_aligned" + suffix + ".txt");
    std::ofstream file(path, std::ios::trunc);
    THROW_CHECK_FILE_OPEN(file, path);

    // Ensure that we don't lose any precision by storing in text.
    file.imbue(std::locale::classic());
    file.precision(17);
    file << bbox.min().transpose() << '\n';
    file << bbox.max().transpose() << '\n';
  }
  // write oriented bounding box
  {
    const auto path = reconstruction_path / ("bbox_oriented" + suffix + ".txt");
    std::ofstream file(path, std::ios::trunc);
    THROW_CHECK_FILE_OPEN(file, path);

    // Ensure that we don't lose any precision by storing in text.
    file.imbue(std::locale::classic());
    file.precision(17);
    const Eigen::Vector3d center = (bbox.min() + bbox.max()) * 0.5;
    file << center.transpose() << "\n\n";
    file << "1 0 0\n0 1 0\n0 0 1\n\n";
    file << extent.transpose() << '\n';
  }
}

std::vector<Eigen::Vector3d> ConvertCameraLocations(
    const bool ref_is_gps,