This document discusses smoothing coarse resolution raster data for integration with vector data. It describes applying a low pass filter to a 3x3 raster window to average cell values and reduce noise. This smoothing technique is demonstrated on several geospatial datasets from GeoSure related to landslides, shrink-swell soils, and other terrain factors. The current coarse resolution rasters are shown alongside the smoothed outputs, which have noise reduced while preserving overall patterns.

1. Talking
With Maps
2010
Smoothing coarse resolution
raster for integration with
g
vector data
(applied to GeoSure)
Diego Di D
Di Diaz Doce

2. Talking
With Maps
2010

3. Talking GeoSure
With Maps
2010
Collapsible deposits Compressible ground
Landslides Running Sand
Shrink swell Soluble rocks

4. Talking GeoSure
With Maps
2010
Collapsible deposits Compressible ground
Landslides Running Sand
Shrink swell Soluble rocks

5. Talking
With Maps
2010

6. Talking GeoSure
With Maps
2010

7. Initial Data
Talking
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D
With Maps
2010
sing
Process
Processing
P
Result
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R

8. Initial Data
Talking
. .
D
With Maps
2010
(
(coarse resolution)
)
sing
Process
Processing
P
Result
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R

9. Talking
With Maps
2010

10. Initial Data
Talking
. .
D
With Maps
2010
Smoothing
sing
.
Process
Processing
P
(coarse resolution)
Result
.
R

11. Smoothing
Talking
With Maps
2010
3x3 raster
t

12. Talking
With Maps
2010 Low Pass Filter
1 1 1 7 5 2 7 5 2
1 1 1 4 8 3
= 4 4.2 3
1 1 1 3 1 5 3 1 5
Value
Vl
=( (7 * 1) + (5 * 1) + (2 * 1) + (4 *1 ) + (8 * 1) + (3 * 1) + (3 * 1) + (1 * 1) + (5 * 1) ) / 9
= (7 + 5 + 2 + 1 + 4 + 8 + 3 + 3 + 1 + 5) / 9
= 38/ 9
= 4.2

13. Talking
With Maps
2010 Low Pass Filter

14. Talking
With Maps 25 m
2010
25m x 25m raster cross-section

15. Talking
With Maps 3m
2010
3m x 3m raster cross-section

16. Talking
With Maps 3m
2010
3m x 3m raster cross-section
after Low Pass Filter

17. Smoothing
Talking
With Maps
2010

18. Initial Data
Talking
. .
D
With Maps
2010
Smoothing
sing
.
Process
Processing
P
(coarse resolution)
Result
.
R

19. Talking
With Maps
2010

20. Talking Example 1: Shrink swell dataset (GeoSure)
With Maps
2010
Current version Smoothed version

21. Talking Example 2: Shrink swell dataset (GeoSure)
With Maps
2010
Current version Smoothed version

22. Talking Example 3: Landslides dataset (GeoSure)
With Maps
2010
Current version Smoothed version

23. Talking Example 4: Landslides dataset (GeoSure)
With Maps
2010
Current version Smoothed version

24. Talking
With Maps
2010