SOIL EROSION IDENTIFICATION BY TM-LANDSAT AND HRV-SPOT IMAGES 
Sérgio dos Anjos Ferreira Pinto 
José Pereira de Queiróz Neto 
Instituto Nacional de Pesquisas Espaciais - INPE 
Divisáo de Sensoriamento Remoto e Meteorologia Espacial - DSM 
Caixa Postal 515 
12201-970 - Sáo José dos Campos - SP 
ISPRS Commission VII / Working Group 6 
ABSTRACT 
The present work was carried out int the Casa Branca region (Eastern of Sáo Paulo State). The objective was 
to develop a methodology using orbital images (TM-LANDSAT and SPOT-Panchromatic) to identify soil 
erosion. Digital TM-LANDSAT (bands 3, 5 and 7) and HRV-SPOT panchromatic images were merged. TM 
bands were transformed by the IHS enhancement and the resultant images (bands R, G and B) were obtained 
after the displacement of the component I by the panchromatic SPOT image. The performance of the R, G 
and B bands, for the detection soil erosion features, was evaluated with serial photographs. 
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