Figures (8)  Tables (1)
    • Figure 1. 

      Algorithm flowchart.

    • Figure 2. 

      Algorithm result graph. (a) the Imperial Palace City map, (b) 3 × 3 grouping search, (c) optimized inverse grid division, (d) equidistant grid division.

    • Figure 3. 

      YOLOv5s network architecture diagram.

    • Figure 4. 

      Loss-epoch.

    • Figure 5. 

      (a) Precision, (b) recall, (c) mAP result.

    • Figure 6. 

      YOLOv5s detection results.

    • Figure 7. 

      Algorithm chart.

    • Figure 8. 

      Algorithm result graph.

    • File formatFile attribute information
      .shpStore geometric shape data of geographic features such as points, lines, and surfaces, including coordinates, shape types, etc.
      .shxSpatial index files, accelerating search and access to geographic features from. shp files
      .dbfStore attribute data of geographic features in table form, including field names, field types, etc.
      .prjStore projection information of geographic data and describe a reference system for geographic coordinates.

      Table 1. 

      Output file format.