齐次坐标就是将一个原本是n维的向量用一个n+1维向量来表示，是指一个用于投影几何里的坐标系统，如同用于欧氏几何里的笛卡儿坐标一般。
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最后，利用齐次坐标讨论了NURBS曲线的延伸算法。
Finally, extension algorithms for NURBS curves are discussed by means of homogeneous coordinates.
首先结合多体系统理论和齐次坐标变换建立目标机床的误差模型；
The first work was to build an error model of target machine tool by combining the multi-body system theory and homogeneous coordinate transform.
研究了线结构光传感器的数学模型，并给出了齐次坐标系下的表达形式。
The mathematical model of single line structured light transducer is studied and it's expression under homogenous coordinate is given out.
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