Remote Sensing for Decision-Makers Series N. 20

ASSESSMENT OF PRIORITY AREAS FOR TRYPANOSOMIASIS CONTROL ACTIONS BY SATELLITE DATA AND FUZZY LOGIC

Pilot study In Togo

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THE DECISION-MAKERS SERIES FOR WHOM AND FOR WHAT?

THE NEED FOR PRIORITY AREAS IN CONTROL ACTIVITIES

WHAT IS FUZZY LOGIC?

Landsat Thematic Mapper (TM) colour composite image superimposed on the digital terrain model. In the Oti plains vegetation is denser than in the heavily cultivated plateau.

WHAT IS REMOTE SENSING?

HIGH-RESOLUTION SATELLITE IMAGERY

Land cover map derived from a supervised maximum likelihood classification with median (3X3) filter.

CASE STUDY IN TOGO IN THE KARA AND SAVANES-L'OTI REGIONS

REMOTE SENSING AND FUZZY LOGIC: DECISION-MAKING AIDS

EVALUATION AND RECOMMENDATIONS

Costs and delivery times

Operation

Costs (US$/km2)

Time (months)

Purchase of satellite images

0.55

1

Image processing and interpretation

0.16

6

Field survey

0.09

0.5

Fuzzy relational calculus

0.08

4

Database construction-GIS

0.03

5

Map production

0.02

1

Total

1.3

17.5

REMARKS

ADVANTAGES OF THE FUZZY METHODOLOGY

RECOMMENDATIONS