Adaptive thresholding of texture towards white region normalization
Abstract:Human colour vision has the ability to recover a measure of contextdependent surface reflectance from observed areas. This can be seen as an analogue to radiometric corrections employed in remote sensing. Procedures based on human colour vision applied in the context of remote sensing could simplify image preprocessing and classification. This study evaluates an algorithm based on Land's colour vision or 'retinex' theory. When tested on remotely sensed images, the algorithm had difficulty coping with the presence of image texture. A new framework is presented that adapts Land's procedure to processing of remotely sensed images using adaptive thresholding techniques.
Document Type: Research Article
Affiliations: Department of Geography, Simon Fraser University, Burnaby, British Columbia, Canada, V5A 1S6
Publication date: 2000-10-15