Abstract:
According to the natural phenomenon that produces a shadow of objects under direct sunlight, the principle of formation of a shadow was studied, through analyzing the relationship between actual shape of objects and its shadow, and then their mathematical model was built. Further using this principle to make reasonable reverse transformation, the computer experiment platform of reverse was developed by programming Visual Basic and Visual Lisp realizing reverse algorithm. The computer experiment platform was applied for reversing 3D model based on its shadow, and through the experimental reversing actual model. Comparing and analyzing with error between real and experimental data, the experiment results show that this algorithm is effective, and finally a new method of reverse is introduced here.