理想透视图的给定条件与形成关系研究

On the Relationship between the Given Conditions and Formation of the Ideal Perspective Drawing

理想透视图是根据具体物体,构建一个期望得到的透视图形的基本框架.这种基本框架构建的合理与否,直接影响其透视体系的建立.本文基于一点透视和两点透视下理想透视图的给定条件与形成关系.依据透视关系的形成原理,提出了各种情况下理想透视图视点的极限位置判定方法,解决了当把照片作为透视图来处理时摄制时的死角问题.

Ideal perspective drawing constructs a desirable basic frame of a perspective drawing based on a specific object.Whether the construction of the basic frame is reasonable or not directly influences the establishment of the perspective system.In order to reasonably construct the basic frame of the perspective drawing and perspective system smoothly,one-point perspectives and two-point perspectives serve as subjects and are analyzed respectively.Based on the formation principle of perspective relationship,the given conditions of an ideal perspective drawing as well as the decision of the limit position of a visual angle under any circumstances are advanced,which solves the reasonable establishment of an ideal perspective drawing.If the pictures are handled as perspective drawings,then the blind angle when taking pictures can be decided.