Test results demonstrate the combined invariant moments are too sensitive towards the local dissimilarity to correctly calculate the displacement of the control points on the vessel part.
结果显示，复合不变矩对于局部的血管信息比较敏感，对于位于血管上的控制点无法准确计算偏移量。
In order to provide the feature points stereo matching between two wide baseline images, a novel algorithm based on affine invariant feature of the feature points is proposed.
为了实现长基线图像特征点的立体匹配，提出了一种新的基于特征点仿射变换不变性的匹配算法。
Third, this paper presents an autonomous landing navigation algorithm taking the scale invariant feature points as the landmarks.
再次，给出了利用尺度不变特征点作为导航陆标进行探测器自主着陆导航的算法。
The main methods include:1) Invariant local feature regions are generated using locally most stable feature points of images;
采取的主要方法有：1）利用图像中的局部最稳定特征点生成具有几何不变性的局部特征区域；
As SIFT features are invariant to rotation and scaling, we employ SIFT to extract feature points.
由于SIFT特征对旋转和缩放具有不变性，该算法利用SIFT提取图像的特征点。
The precise integration method proposed for linear-invariant dynamic system can give precise numerical results approaching to the exa ct solution at the integration points.
对线性定常结构的动力系统提出的精细积分法，能得到在数值上逼近于精确解的结果。
The main methods adopted include:1) watermark synchronization is achieved by invariant local circular regions which can be generated using image locally most stable feature points;
采取的主要方法有：1）利用图像中的局部最稳定特征点生成具有几何不变性的圆形特征区域，用于水印的同步；
SSL is the description of the surge points locus and, in the current practice, it's assumed to be invariant with centrifugal compressor inlet conditions.
SSL描述了喘振点的轨迹。在目前的实践工作中，一般假定认为它不随离心压缩机的入口条件变化而改变。
And Scale Invariant Feature Transform (SIFT) was employed to exclude those sub-regions with smaller matching key points.
然后利用尺度不变特征变换(SIFT)剔除那些匹配的关键点数目少的子区域。
And Scale Invariant Feature Transform (SIFT) was employed to exclude those sub-regions with smaller matching key points.
然后利用尺度不变特征变换(SIFT)剔除那些匹配的关键点数目少的子区域。
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