smoothing coarse resolution rasters, by bgs

TalkingWith Maps

2010

Smoothing coarse resolution raster for integration with g

vector data (applied to GeoSure)(applied to GeoSure)

Di Di DDiego Diaz Doce

TalkingWith Maps

2010

Talking GeoSureWith Maps

2010

Collapsible deposits Compressible ground

Landslides Running Sand

Shrink swell Soluble rocks

Talking GeoSureWith Maps

2010

Collapsible deposits Compressible ground

Landslides Running Sand

Shrink swell Soluble rocks

TalkingWith Maps

2010

Talking GeoSureWith Maps

2010

Talking Dat

a

With Maps2010

. .

Initi

al D

sing

ProcessingP

roce

ssP

.Res

ult

.R

Talking Dat

a

With Maps2010

. .

Initi

al D

(coarse resolution)

sing

( )

ProcessingP

roce

ssP

.Res

ult

.R

TalkingWith Maps

2010

Talking Dat

a

With Maps2010

.

Initi

al D .

sing

SmoothingSmoothing

Processing .P

roce

ssP (coarse resolution)

.Res

ult

.R

TalkingSmoothingSmoothing

With Maps2010

3x3 t3x3 raster

TalkingWith Maps

2010 Low Pass Filter

1 1 1 7 5 2 7 5 21 1 1

1 1 1

1 1 1

7 5 2

4 8 3

3 1 5

7 5 2

4 4.2 3

3 1 5=

1 1 1 3 1 5 3 1 5

V lV lValue=( (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

Value=( (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= 4.2

TalkingWith Maps

2010 Low Pass Filter

TalkingWith Maps

201025 m

25m x 25m raster cross-section

Talking3With Maps

20103 m

3m x 3m raster cross-section

Talking3With Maps

20103 m

3m x 3m raster cross-sectionafter Low Pass Filter

TalkingSmoothingSmoothing

With Maps2010

Talking Dat

a

With Maps2010

.

Initi

al D .

sing

SmoothingSmoothing

Processing .P

roce

ssP (coarse resolution)

.Res

ult

.R

TalkingWith Maps

2010

Talking Example 1: Shrink swell dataset (GeoSure)With Maps

2010

Current version Smoothed version

Talking Example 2: Shrink swell dataset (GeoSure)With Maps

2010

Current version Smoothed version

Talking Example 3: Landslides dataset (GeoSure)With Maps

2010

Current version Smoothed version

Talking Example 4: Landslides dataset (GeoSure)With Maps

2010

Current version Smoothed version

TalkingWith Maps

2010