Abstract: Current methods for generating digital bas-relief are pretty slow and can not be used to preserve complex details in the result.This paper proposes an approach for interactively generating digital bas-relief in real time.By the method,first we present a novel dynamic range compression function which is proved to be able to better preserve details than previous method.Then a modeling system for generating bas-relief is developed based on the compression function.The system integrates all the processing including modeling,interaction and rendering into GPU and use texture computation technique of multi-targets rendering to gain a high rate of utilization of frame buffers.Therefore,the system can be used to generate bas-relief models in a real-time rate.The user can adjust parameters to obtain various bas-relief models in the system by an easy-to-use user interface.Experimental results show that the approach can be applied to efficiently generate more detailed bas-relief than previous approaches.