查询词典 concavities

In order to overcome the problems of traditional snake associated with poor convergence to boundary concavities and sensitive initialization,gradient vector flow based on deformable models is presented to segment tumor region.

为了克服传统的蛇形算法不能收敛于边缘凹陷处以及对蛇的初始化过于敏感的缺点，本文提出用基于可变形模型的梯度矢量流方法提取乳腺X光片中的肿瘤区域。

Experiments on synthetic images with low signal-to-noise ratio and scene images show good performance and robustness of the approach, especially it's capabilities of capturing the discontinuous boundary and moving snakes into boundary concavities.

对人工合成的低信噪比图像及景物图像的实验表明本文方法具有很好的性能及鲁棒性，特别是在处理目标边缘不连续及有凹形边缘时更显示了其优越的性能。

In order to solve this problem, a glass-cutting process by using a single- straight tool with big inclination angle is proposed, which helps to obtain integral surface without cracks and concavities in a culling depth at sub-millimeter level.

该方法能在亚毫米级的切削深度下高效地获得无裂纹和凹坑的完整表面。

However, many of them are not only hard but also brittle and are difficult to be machined by a cutting tool due that cracks and concavities form easily on machined surface.

但功能玻璃大都硬度高、脆性大，易在已加工表面产生裂纹和凹坑。

Found corroded. The paint on the concavities of the corrugated bulkheads wasn't peeled

发现剩余的油漆约有3-4 层并也已脱落，油漆铲除后，发现下面的钢板已腐蚀。

The new method overcomes the disadvantages of the sensitivity of active contour models to its initial position, the poor convergence to boundary concavities which existed in the traditional Snake algorithm, sensitivity to noise and complex computation.

从而克服了参数主动轮廓线模型对初始曲线敏感、噪声敏感和不能收敛到凹陷的边缘问题和几何主动轮廓线模型水平集方法计算量大等问题。

Experiments on synthetic images with low signal-to-noise ratio images and nature images show good performmance and robust of the approach, especially it's capable to capture the discontinuous boundary and move snakes into boundary concavities.

对人工合成的低信噪比图像及自然图像的实验表明，本文方法性能良好，工作稳定，具有较强的处理边缘不连续及进入凹形边缘能力。

Precise cutting of glass using single-straight tool with big inclination angle is a new machining method in which integral surface with no cracks and concavities can be machined out high efficiently at the cutting depth of sub-millimeter level.

基于大刃倾角刀具的玻璃切削是一种新的加工方法，该方法能在亚毫米级的切削深度下高效地获得无裂纹和凹坑的完整表面。

The proposed method can detect certain object boundaries, for which the original method is not applicable. E.g. it can automatically detect interior and exterior contours of an object and edges of multi-objects, starting with only one initial curve whose position is anywhere in the image. Moreover, active contours can move into boundary concavities and perform better in the presence of weak boundaries.

它能够解决原方法所不能解决的一些图像分割问题，例如，能够从任意选取的一条初始曲线出发自动检测目标物体的内外轮廓，检测多目标物体以及深度凹陷区域的边缘，并能较好地提取目标物体的弱边界。

The active contour model is a powerful image segmentation method for representing image contour, but it has three severe difficulties. First, active contour model highly depends on its initial position. Second, active contour model lacks the ability to handle boundary concavities.

动态轮廓模型(active contour model； ACM)是一种功效强大的影像分割描绘方法，但却具有三个严重的缺点：第一、此模型非常依赖待描绘图形的起始位置，第二、此模型缺乏进入图形凹陷处的能力，第三、此模型有停滞在局部能量极小值的倾向。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48