This study assesses the possibility of detection of oasis basins in east-central Niger through textural analysis of satellite images based on the variance. Texture analysis serves to find descriptive attributes that quantify images granularity characteristics, directionality or finesse. These textural characteristics are usually related to image objects properties. An image texture analysis provides information about the nature of objects, constituting the segments of homogeneous regions, and improves
image quality. 

KEYWORDS

Oasis basins, SPOT 5 imagery, textural classification, variance, Gouré, Niger.