An estimation method of fingerprint ridge distance based on ridge orientation projection signal spectrum analysis is proposed to overcome some shortages in the present literatures.
提出了一种基于纹线方向投影信号谱分析的指纹纹线间距估计方法。
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.
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”。
In engineering drawing, it is always inconvenient for orthographic projection to solve some measurement and orientation problems.
由于在工程图学中，用正投影法解决画法几何中的某些度量和定位问题往往很不方便。
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