【摘要】 综述了三维物体重建的各种方法。首先介绍被动还原重建的几种方法,指出了它们的缺陷,即像素匹配问题。接着介绍了从二维坐标空间转化到三维坐标空间所要遵从的对极几何限制,并通过数学推导得出坐标转化表达式。在此基础上重点讨论了三维物体主动还原重建方式,特别是结构光还原的方法,通过结构光的引入,能够较好地解决像素匹配问题,提高了还原的准确性,减少了拍照的次数,有利于动态物体的重建。根据双色反射模型,通过让系统的光路满足反射定理,且角度为60°,可改善主动还原重建方法对物体颜色限制在中性色的条件。最后讨论了精确匹配和消除强光的方法。更多还原

【Abstract】 The methods of 3D reconstruction are reviewed.The several methods of passive reconstruction are introduced,and it is pointed that the pixel correspondence problem is their defect.The transform space from 2D to 3D compling with the epipolar geometry constraint is introduced,and the coordinate computing formulas are deduced.On the basis of those,the active way is presented,especially the means of structured light,which can solve the correspondence problem and enhance the model veracity through the structured light.In addition,this method reduces the amount of taking photos and has the advantage of moving reconstruction.According to the dichromatic reflection model,the optical path of the system satisfies the reflection theorem and the reflection angle is 60°,which could alleviates the color limitation of the active method.Finally the methods of precise correspondence and eliminating glare are discussed.更多还原