# Usefulness of OSM and BDOT10k Data for Developing Tactile Maps of Historic Parks
## 3 Results
### BDOT10k and OSM Database Assessment for Park Styles  
The BDOT10k and OSM database assessment, broken down by objects belonging to each of the five park styles, showed clear differences in their usefulness. For the Baroque style (Figure 6(a)-c), 8 objects were selected for the first level of map detail, 14 for the second, and 7 for the third. The characteristic features of this style included, amongst others: garden parterre, lawn, row of shrubs, single tree, and row of trees. The group of water bodies included standing water and a fountain. The group of architecture and park equipment was comprised of sculpture, steps, wall, bucket plant, pergola, trellis, lattice, and bindage, amongst others. For the first level of map detail, the best results were obtained for categories 2, 4, and 5, with 83%, 61%, and 88%, respectively, for BDOT10k, and 83%, 61%, and 83%, respectively, for OSM (Figure 6(a)). Categories 2, 4, and 5 concerned the occurrence of descriptive attributes of data and the existence and correctness of geometry. Similarly, for the second level of detail, the results for these categories were 73%, 52%, and 82%, respectively, for BDOT10k, and 55%, 47%, and 67%, respectively, for OSM (Figure 6(b)). The lowest scores were obtained for the third level of map detail (Figure 6(c)). Only in category 2 (attributes) and 5 (correctness of geometry) were the results above 50% for BDOT10k, with 57.1%, while OSM received a rating of 42.9%. The characteristic features of the Renaissance style (Figure 6(d)-f) include, amongst others: garden parterre, medium vegetation, herbs, viidrage, fountains, stairs, and walls. At the first level of map detail, there were six objects, with the same number at the second level and seven at the third. The assessment of BDOT10k and OSM data usefulness for the development of Baroque-style park maps showed that at the first level in the categories of 2, 4 and 5, the BDOT10k database scored 71%, 51%, and 71%, respectively, while OSM scored 71%, 50%, and 64%, respectively (Figure 6(d)). Again, the lowest scores were assigned for the third level of detail, which were below 50% for BDOT10k and OSM (Figure 6(f)). For the Landscape/English (Figure 7(a),b) and Romantic/Sentimental (Figure 7(c),d) styles, only two levels of map detail were designed. At the first level of detail for the Landscape/English park, there were eight characteristic objects, with nine at the second level. These were mainly: lawn, flower meadow, tree cluster, standing water, stream, bower, stage, steps, and bench. At the first level of map detail, BDOT10k database attributes were available for 88% of objects, geometry for 72%, and, for all objects, the geometry was 100% correct. For the OSM database, the results were similar, with attributes available for 88% of objects, geometry for 77%, and geometry correctness for 100% (Figure 7(a)). At the second level of map detail, the best results were obtained in categories 4 and 5. For 68% of objects, according to BDOT10k, and 77% of objects, according to OSM, geometry was available,  
Figure 6: Usefulness of BDOT10k and OSM data—the third level of map detail: (**a**) sum of points; (**b**) percentage of points. and, for 77% of objects, according to BDOT10k, and 68% of objects, according to OSM, the geometry was correct (Figure 8b). The highest results of data assessment were obtained for the Sentimental park style, also defined as Romantic, both at the first level of map detail (Figure 8c) and at the second one (Figure 8d). The Romantic/Sentimental style was characterised by 12 objects at the first level and 14 objects at the second, with tall vegetation, an antique building, antique element (column, sphinx), oriental building, ruin, grotto, tomb, sculpture, wall, and steps. The assessment of the BDOT10k and OSM data showed that, at the first level in categories 1, 2, 4, and 5, the BDOT10k database received the ratings of 66%, 83%, 83%, and 100%, respectively, while OSM received the ratings of 66%, 83%, 83%, and 100%, respectively (Figure 8c).