线性透视和空气透视专业知识讲座.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,二级,三级,四级,五级,*,*,本文档所提供的信息仅供参考之用，不能作为科学依据，请勿模仿。文档如有不当之处，请联系本人或网站删除。,线性透视,Linear Perspective,The process which people use to judge visually the relative and absolute distance of objects is quite complex and poorly understood.Its not simply a matter of triangulation using our two eyes;a variety of other factors seem to be brought into play with varying degrees of influence,such as linear perspective,detail and aerial perspectives,interposition,and etc.Realizing these factors is most important particularly to researchers and designers in the field of virtual reality.,人们用眼睛判断物体的相对和绝对距离的过程是极为复杂和难于理解的。它不仅是用双眼进行三角测量的过程,还有其它许多因素不同程度地产生影响,比如线性透视、细节与空中透视、干涉等等。在虚拟现实领域工作的研究设计人员尤其要意识到这些因素。,Whenthe linearperspective drawings are used to express the effectof space,the dimen-sion of time is ignored,thus the continuous space is turned into a static instance.But ancient Chi-nese paintings embody the relevance of space and time very well,and so does the traditional Chi-nese buildings.Therefore,we can seek some approaches to the space design in the traditional Chi-nese culture.,当人们将线性透视图作为表达空间效果之手段的同时,他们忽略了“时间”这个向度,而将具有延续性的空间画面凝固成苍白的静态瞬间。然而,早在古代中国的画面中,已经体现了时间与空间的关联性。作为与传统绘画有着共同文化底蕴和一脉相承的四维世界观念的建筑,也同样体现出对时空交叠的四维空间的组织和创造。我们不应该迷失在追求表现形式和为装饰而装饰的室内空间设计作品中,而应该从自身的文化体系中去寻找那些我们的空间故事,Perspectine Science start gradually establish the methods of the line perspection of descripe object and spatial and other perspective science Nouadays,the research of peoples visual sense and consciousness expands the analysis realm of perspective science.As understanding every kind of perspective technigue of painting and extends the category of perspective science.,透视学在开始逐步确立的描绘物体、再现空间的线性透视和其他科学透视的方法。到现代对于人的视知觉的研究拓展了透视学的分析领域。随着对世界各种文化的了解,人们认识到受更多的文化结构制约的各种透视画法,从而也扩大了透视学的范畴,。,Anamorphic vision images are corrected with perspective model of lines.An approximate line passing through the center is approached by anamorphic curves.Intersection of two different approximate lines is regarded as the image center.Distortion is analyzed with a radial anamorphic model.The anamorphic coefficient is combined with the vision process to correct an anamorphic image for the final calibration of the liner model.,针对视觉成像畸变,提出基于直线透视成像变形的畸变校正方法,.,无需任何预先参数,利用畸变曲线拟合逼近过中心的近似直线,通过两直线的交点求得图像对称中心,.,利用径向畸变的数学模型和参数分解的方法对变形量进行线性求解,求得的畸变因子代入成像过程,为最终理想线性透视模型的标定消除畸变对成像的影响,.,空气透视,aerial perspective,空气透视（,aerial perspective,），是由于大气及空气介质（雨、雪、烟、雾、尘土、水气等）使人们看到近处的景物比远处的景物浓重、色彩饱满、清晰度高等的视觉现象。又称“色调透视”、“影调透视”、“阶调透视”。,空气透视规律指的是近处物体暗而深，远处物体淡而浅。近处物体色彩饱和，趋于暖色，明度高，远处物体色彩饱和度差，趋于冷色，近处明晰，远处模糊。近处明暗反差大，远处明暗反差小。,空气透视：用颜色的鲜明度的大小表现物体的远近：近处物体色彩鲜明，越远的物体越失去原来的颜色。,区别：,线性透视是近大远小,空气透视是近实远虚,Thanks,！,