Method SmoothPartnerRuns

deps/tesseract/textord/colfind.cpp:1350–1379

Only images remain with multiple types in a run of partners. Sets the type of all in the group to the maximum of the group.

// Only images remain with multiple types in a run of partners.
// Sets the type of all in the group to the maximum of the group.
void ColumnFinder::SmoothPartnerRuns() {
  // Iterate the ColPartitions in the grid.
  GridSearch<ColPartition, ColPartition_CLIST, ColPartition_C_IT>
    gsearch(&part_grid_);
  gsearch.StartFullSearch();
  ColPartition* part;
  while ((part = gsearch.NextFullSearch()) != NULL) {
    ColPartition* partner = part->SingletonPartner(true);
    if (partner != NULL) {
      if (partner->SingletonPartner(false) != part) {
        tprintf("Ooops! Partition:(%d partners)",
                part->upper_partners()->length());
        part->Print();
        tprintf("has singleton partner:(%d partners",
                partner->lower_partners()->length());
        partner->Print();
        tprintf("but its singleton partner is:");
        if (partner->SingletonPartner(false) == NULL)
          tprintf("NULL\n");
        else
          partner->SingletonPartner(false)->Print();
      }
      ASSERT_HOST(partner->SingletonPartner(false) == part);
    } else if (part->SingletonPartner(false) != NULL) {
      ColPartitionSet* column_set = best_columns_[gsearch.GridY()];
      int column_count = column_set->ColumnCount();
      part->SmoothPartnerRun(column_count * 2 + 1);
    }
  }
}

// Helper functions for TransformToBlocks.
// Add the part to the temp list in the correct order.