// Sequentially match images within neighborhood:
//
// +-------------------------------+-----------------------> images[i]
//                      ^          |           ^
//                      |   Current image[i]   |
//                      |          |           |
//                      +----------+-----------+
//                                 |
//                        Match image_i against
//
//                    image_[i - o, i + o]        with o = [1 .. overlap]
//                    image_[i - 2^o, i + 2^o]    (for quadratic overlap)
//
// Sequential order is determined based on the image names in ascending order.
//
// Invoke loop detection if `(i mod loop_detection_period) == 0`, retrieve
// most similar `loop_detection_num_images` images from vocabulary tree,
// and perform matching and verification.
std::unique_ptr<Thread> CreateSequentialFeatureMatcher(
    const SequentialMatchingOptions& options,
    const SiftMatchingOptions& matching_options,
    const TwoViewGeometryOptions& geometry_options,
    const std::string& database_path);