Spatial scale is one of the fundamental problems in geosciences.The spatial scale of remote sensing information and the spatial scale transformation have become the object of many scientific studies with the applications of remote sensing data.In this paper

the spatial scale of shoreline information extracted from satellite images with different resolutions has been studied based on fractal geometry.Two spatial scale transform models based on scale and fractal scale-dependence have been developed.The models have been used to transfer shoreline spatial scale extracted from IKONOS

IRS

SPOT and ETM+ images to（1∶10000） and（1∶50000） scales.The results have been compared with the map scale.It shows that the models work well.