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Low‐Cost Remote‐Sensing Techniques Applied to Drainage Area Studies
Author(s) -
SCOTT A.
Publication year - 1994
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.1994.tb01141.x
Subject(s) - raw data , drainage , remote sensing , computer science , computer program , environmental science , hydrology (agriculture) , computer graphics (images) , engineering , geology , geotechnical engineering , ecology , biology , programming language , operating system
The paper describes a project in which colour and infra‐red video images were used as the basis for assessing the percentage impermeability of subcatchments for a WALLRUS model. The imagery was obtained from helicopter‐mounted video cameras. Computer processes were developed to convert raw data, which were in analogue format, into a format which could be manipulated and displayed by the computer. The computer was able to assess the total permeable and impermeable areas in each subcatchment. These data were used in the WALLRUS model and compared with the results obtained using manually derived data and results from the flow verification survey.