Method NumKeypointsForImage

src/colmap/scene/database_sqlite.cc:615–617

  }

  size_t NumKeypointsForImage(const image_t image_id) const override {
    return CountRowsForEntry(sql_stmt_num_keypoints_, image_id);
  }

  size_t NumDescriptors() const override {
    return SumColumn("rows", "descriptors");