l Projection Vector (投影向量)：该选项用于选择在实体特征中所建立的基准轴。当在Projection Along下拉列表中选择Datum Axis以外的其他选项时，该选项将灰显。
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定维投影向量量化算法 DFPVQ
顶部大概轮廓投影向量 top outline projection vector
行投影向量 Row-projection vectors
列投影向量 Column projection vectors
特征向量投影 eigenvector projection
根集向量投影法 Root-set eigenvector projection method
创建向量投影曲线 Create Vector Projected Curve
双投影归一化向量 double projection normalization vectors
Spread Transform Dither Modulation(STDM) is a watermarking algorithm having good performance. In this algorithm,the Project-vector used for spread transform is an important factor that affects its performance.
扩展变换抖动调制(spread transform dither modulation,STDM)是一种性能很好的水印算法,该算法中用于扩展变换的投影向量是影响其性能的一个重要因素。
参考来源 - 扩展变换抖动调制水印算法中投影向量的研究 in C·2,447,543篇论文数据，部分数据来源于NoteExpress
通过极大化该边界获得最优投影向量，同时避免因类内离散度矩阵奇异导致的小样本问题。
Through maximalizing the margin, we can obtain the optimal projection vector, and avoid the small sample size problem due to singularity of the within-class scatter.
该方法先将图像矩阵进行重组，根据重组的图像矩阵构造出总体散布矩阵，然后求出最佳投影向量进行特征提取。
Then, an image scatter matrix is constructed using the reshaped image matrixes and its eigenvectors are derived for image feature extraction.
我所做的就是把F投影到切向量方向上，得出F沿着曲线的值,然后再把这些加起来。
What I do at any point is project F to the tangent direction, I figure out how much F is going along my curve and then I sum these things together.
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