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大视野动态体视投影探讨

On Dynamic Stereoprojection of Large Visual Field

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【作者】 王希富

【Author】 Wang Xifu (College for Workers and Staff Members of Realty Management Office Beijing)

【机构】 北京市房地产管理局职工大学

【摘要】 互补色体视图的视野,受到立体视野、颜色视野和滤色镜的限制,图幅很小。本文提出了采用和动态观察时双眼同轨迹、同方位的动态视点,用一系列变换的投影体系进行投影的“动态投影法”。并建立了水平投影面、正交投影面、圆柱投影面等与动态投影相适应的画面,以扩大体视投影的视野和加强体视效果。为了计算和消除动态观察产生的空间象畸变,推导了以下计算公式:1.旋转视点水平投影面体视投影的线性象差、象差视角、体视角差、视差和集合角计算公式。2.旋转视点正交投影面体视投影的垂直象差、转折点象差计算公式。3.旋转视点圆柱画面体视投影的最大垂直视差点定位、最大垂直视差、作图象差和旋转象差的计算公式。根据上述计算,运用视觉生理中视敏度和离心度的函数关系,提出了消除畸变的象差分配法。探索了动态投影、动态观察中的图学、生理学问题。取得了大视野动态体视投影的三维成象效果。

【Abstract】 Visual field of complementary colours stereogram is limited by the stereos- copic visual field,color field and coloured spectacles.,the refore,the stereogram size is rather mall.An dynamic projective method of series alternate projection system is studied in this paper.Using dynamic sight point of common locus and orientation with dynamic view.Meanwhile,several picture planes which suits the dynamic projection is established.Such as horizontal projection plane, orthogonal system of projection and cylindrical surface etc.in order to enlarge the stereoprojection visual field and strengthen the stereotyped effect. For computing and eliminating the distortion of 3D image dynamic view, following formulas are derived: 1.Formula for computing linear aberration,visual angle of aberration, stereotype angle difference,parallax and convergent angle of the revolution sight point horizontal projection plane stereoprojection. 2.Formula for computing vertical and turning point aberration of the revolution sight point orthogonal system of projection stereoprojection. 3.Formula for maximum vertical parallax point positioning,computing maximum vertical parallax,construction and revolving aberration of revolution sight point cylindric surface stereoprojection. Depending upon the above—mentioned calculations,by applying the visual acuity as a function of centrifugal degree in optical physiology,a method for distributing the aberration is suggested to eliminate the distortion,problems of graphics and physiology in dynamic projection and dynamic view are also studied in this paper and the 3D image effect for dynamic stereoprojection of large visual field is obtained.

  • 【文献出处】 工程图学学报 ,Journal of Engineering Graphics , 编辑部邮箱 ,1985年06期
  • 【被引频次】4
  • 【下载频次】10
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