关键词: 三维纹理, 图形处理器, 体阴影, 色调映射

Abstract: Traditional 3D texture based volume rendering algorithms are usually not capable of producing high quality images compared with ray casting algorithms.In order to enhance rendered image quality，during GPU-based 3D texture volume rendering the volume shadow effect is realized by the interactive speed.At the same time，volume graphics are used for realistic image synthesis.Aspects of visual perception are taken into account by means of GPU-based real-time high dynamic range tone mapping．Several examples are given to illustrate the effectiveness on real volume datasets and get better result.

Key words: 3D texture, Graphics Processing Unit（GPU）, volume shadow, tone mapping