Abstract: An efficient hardware-accelerated view-dependent level-of-detail rendering technique for out-of-core visualization of large terrains is developed.To achieve realistic in visualization,the corresponding satellite or aerial imagery texture is applied over the terrains.Also,to display large collection of static objects such as buildings,trees,roads,and so on.Over the terrain while maintaining the real-time frame rates,efficient object handling methods are developed.A technique to use powerful performance and programmable vertex and fragment features of current GPU for advanced visual effects and increased realism in terrain visualization are proposed.The above algorithms have been successfully tested on different terrains and satellite images.Results show that large-scale terrain renders fast and with high realistic using GPU-based programmable hardware.