Projecting Image on Non-planar Surface with Zero-th Order Geometric Continuity Using Simple Dual-linear Function and Manipulation of Strict Integer Implementation in Programming Language

Usage of a projection system to display large screen images is still relevant in the midst of LED-based display increasing popularity. This is due to that the system itself is a mature technology, reliable and cheaper than the LED counterpart. While various methods had addressed the projection problems on curve surface, projecting image on jagged like surface (zero order geometric continuity) has yet to be studied in depth. This paper proposes a method for projecting image on non-planar surface with zero-order geometric continuity property using parametric modeling. The method manipulate linear function by combining two functions into one by taking advantage of computer programs strict implementation of integer variables. The method was applied to grid-based texturing algorithm in order to create the desired zero-continuity effect on the surface. The method was compared with texturing that implement existing curve algorithm to project image on the screen. Visual evaluation results showed that the proposed method fared better compared to existing curve-based projection algorithm.