INTEGRATION OF MULTISOURCE DATA - COMPARISON OF GEOMETRIC AND RADIOMETRIC METHODS

Multisource data integration requires geometric and radiometric processing adapted to the nature and the characteristics of the data in order to keep the best information available of each image in the composite image. This article compares different geometric and radiometric processing techniques and evaluates, quantitatively and qualitatively, their impact on the resulting composite images, using panchromatic SPOT and airborne SAR images. The techniques that take into account the nature of the data give better and more solid results: subpixel geometric accuracy, and high quality composite images, which are sharp and precise containing well-defined cartographic elements and information that are easy to interpret and closer to physical reality.