三线性插值 meaning in English

trilinear interpolation

Secondly , we analyses the volume rendering based on ray casting , includeing algorithm principle , implementation pipeline . and for the features of medical slice images , improved trilinear interpolation algorithm is presented with an increase of the speed ray - casting in direct volume rendering
其次,详细分析了光线投射体绘制算法的基本原理、流程步骤,并针对医学断层图像的特点,提出和实现了改进的三线性插值算法,从而大大提高了光线投射法的绘制速度。