特徵

In this thesis, we implement a computational procedure to categorize and classify 3-D objects from their contour under a simple environment. First, we use foreground detection, Canny edge detection and speedy GVF snake to obtain the object's contour. The contour is then used to establish the object's features. Two databases are built using methods which compute similarity by modified aspect-combination algorithm proposed by Cyr and Kimia and new proposed aspect-combination algorithm. By using these two databases, we recognize 3-D objects using four recognition methods and compare their performance. Finally, a conclusion is made that our newly proposed algorithm is better than the modified algorithm proposed by Cyr and Kimia.

在本论文中，对一个在单纯环境下的三维物体，由撷取到辨识出此物体做了一个完整的实现，首先，利用前景侦测结合肯尼边缘侦测法和加速的梯度向量流动态轮廓侦测法，来得到物体轮廓，接著利用此轮廓找寻出物体的特徵，然后配合计算相似度的方法，代入修改后的Cyr and Kimia的外观结合演算法（aspect-combination algorithm）和新提出的外观结合演算法去建资料库，然后，对於三维物体则依据两种不同方法所建出的资料库，利用四种辨识的方法来辨识并比较其结果，最后得出新提出的外观结合演算法是优於修改后的Cyr and Kimia的外观结合演算法的结论。

Dalmatian Pelican is easily distinguished by its long bill.

卷羽鹈鹕的明显特徵是其长长的咀。

The Dalmatian pelican is distinguished mostly by its long bill.

卷羽鹈鹕最明显的特徵是，它们有长长的咀。

In fact this software is loaded with failsafe features to prevent loss of data.

事实上，这软件是装载故障特徵，以防止数据丢失。

In the forth stage, we use three features, that is, the triangle formed by eyes and mouth, the degree of the direction symmetry and the degree of the region symmetry to classify the facial orientations as three classes: frontal, oriented and non-frontal face.

过滤其它的线段后，找出线段中心分布密集的区域。再依据眼睛、嘴巴的相对位置、颜色特徵来找验证所找到的线段是否为眼睛和嘴巴所形成的。最后从找出的线段来推算出眼睛和嘴巴的位置。

Methods: Ecumenical demology character and the reasons of laboring selections of 834 pregnant women were investigated with anonymous questionnaire.

采用匿名问卷方式对834例妇女的一般人口学特徵及选择分娩方式的理由进行调查。

The data including demology characteristics were gathered by face-to-face questionnare, and it was measured that the anthropometric variables, blood pressure and biochemical characteristics.

采用面对面询问法收集研究对象的一般人口学特徵，测量体格指标，并测定生物化学指标。

In the Wal-Mart era of religion and spirituality, every particular creed and any denominational distinctives get watered down.

在教会像华尔超市的世代，所有的教义和教派的特徵都被冲澹了。

If the communication system is very complex but there is no adaptive feature and the whole behavior pattern emerges in the course of a single-stage rigid development, any small biological deviation from the mean is likely to alter the receptive and productive capacities for patterns, thus rendering individuals that are not perfectly replicated incommunicado, and this difficulty in communication might bar them from interacting with the group.

如果沟通系统相当复杂，但却没有适应性特徵，而且整个行为形态在一阶段的精确发展的过程中浮现，那麼，在生物学上任何一点偏离平均值都可能会改变这此形态的接收及产出能力，於是使得非完美复制的个体完全的孤立，如此沟通上的困难会阻止他们和团体互动。

The similarities are in the proportions-rather straight legs, large or clumsy feet, and arms long in relation to the height-and also in the way the end of the dhoti hangs straight down between the legs.

体型比例的相似点是：腿线大致笔直，脚庞大粗笨，与身高相比，两臂过长这种体型特徵，而且腰布的端头垂落于两脚间。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。