1 de julio de 2000 Vol. 1 No.1


Integrated Technique for Automated Digitization of Raster Maps
Serguei Levachkine and Evgueni Polchkov

7 Appendix: Figures

Figure 1. Cartographic raster map. Source: Atlas nutesa, Madrid, 1979.

Figure 2. Some point cartographic patterns.

Figure 3. Differences between objects of the same type located in different parts of the map (magnified 800%).

0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 1 1 0 0 0

0 0 0 0 0 0 0 1 1 1 1 1 0 0

1 1 1 1 0 0 1 1 1 0 1 1 0 0

1 1 1 1 1 1 1 0 0 0 0 0 0 0

0 0 0 1 1 1 1 0 0 0 0 0 0 0

0 0 0 0 1 1 1 1 1 1 1 0 0 0

0 0 0 0 1 1 0 0 0 1 1 0 0 0

0 0 0 0 1 1 0 0 0 0 1 0 0 0

0 0 0 0 1 1 0 0 0 0 0 0 0 0

0 0 0 0 1 0 0 0 0 0 0 0 0 0

0 0 0 0 1 0 0 0 0 0 0 0 0 0

0 0 0 0 1 0 0 0 0 0 0 0 0 0

 

Figure 4. Traning mask for the neural network of the pattern in Figure 2.

Figure 5. Binarization of the pattern (magnified 800%).

Figure 6. Chromatic filtering of the map in Figure 1 considering the color tones of the pattern in Figure 2 (segment).

Figure 7. Binarization of the map in Figure 1.

Figure 8. Extraction of the skeleton of the pattern (magnified 800%).

Figure 9. Selection of candidates to be of the same type that the pattern in Figure 8 in the map in Figure 7 (segment).

Figure 10. Detection of some point objects corresponding to the pattern in Figure 8 in the map in Figure 7 (segment).

 

 

--- BLUE PALMS ---

(382, 274)

(392, 298)

(768, 300)

(450, 336)

(547, 375)

(572, 387)

(590, 408)

(709, 417)

(697, 443)

(819, 469)

(792, 473)

Figure 11. Table of pixel coordinates of the blue palms in Figure 1.

 




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éxico D.F.