%X Rendering and simulation software needs many models of reality. Every human has hair and we need to visualize realistic hair. We can model hair with many spline curves. A typical task of the ray tracing method is finding an intersection of spline curves with a ray. We try to find a fast way to calculate the point where the ray intersects the curve. %L miis694 %D 2014 %T Spline Intersection Improvement %A D. Aleksov %A M. Paskova %A N. Naidenov %A P. Marinov