查询词典 extraction

A new method based on two-dimensional feature extraction in the complex domain is proposed for face recognition in this paper.

摘要该文提出了一种新的基于复数域中的二维特征提取方法进行人脸识别。

Drying green tea; PAHs; composing; extraction rule; GC

烘青绿茶； PAHs；组成；浸出规律；气相色谱

This dissertation presents three segmentation algorithms for compressing image documents, with a high compression ratio of both color and monochromatic compound document images. The proposed algorithms greatly outperform the famous image compression methods, JPEG and DjVu, and enable the effective extraction of the text from a complex background, achieving a high compression ratio for compound document images.

本文中提出的切割方法应用於文件影像压缩，可以明显的看出压缩倍数与视觉品质优於JPEG或DjVu，而且在本文第三个切割方法中，提出新的区域性区块特徵分离与拼图式全图整合的方法，在解决复杂型复合式文件影像的文字切割问题时，即使在同一张完整的文件影像中，包含各种不同程度的复杂状况，也可以顺利的将不同颜色、不同复杂背景与不同交叠程度的文字切割出来，提高各种复杂型复合式文件影像的压缩品质。

Chinese outline fonts ; curve ; concave point and convex point ; stroke extraction ; curve fitting.

汉字轮廓库； Bezier曲线；凹凸点；笔划抽取；曲线拟合

What is the turbine type, condensing or extraction type.

是什么种类的涡轮？冷凝的还是提取的？

The approach of reliable extraction of conical surface feature and parameter estimation from range images we proposed has solved a difficult issue.

本文提出的圆锥面提取和参数估计方法较好地解决了从深度图象中可靠提取圆锥面的难题。

On the issue of surface feature extraction, the reliable approaches to extracting planar, spherical, cylindrical and conical surface is tackled.

面特征提取部分探讨了从深度图象中可靠提取平面、球面、圆柱面和圆锥面特征的方法。

By using the Graham scanning for the convex hull extraction and fitting these convex hull points with the conics,roots of the conics are regarded as points we need.

采用格雷厄姆扫描法对包络进行凸壳提取，并用二次曲线拟合凸壳点，计算出拟和曲线的根。

Connected component detection is an elementary and time-consuming operation in digital image processing. It is widely applied in pattern recognition, characteristic extraction, image understanding and so on.

连通检测是计算机数字图象处理中一个重要的基本操作，它在模式识别、图象理解、图象特征提取等方面有着广泛的用途。

According to the principle of mass conservation, the kinetic model of SCFE is set up founded on differential extraction, and the mass transfer in SCFE is analyzed.

根据质量衡算原理，建立了基于微分床萃取的超临界流体萃取的动力学数学模型，从理论上分析了超临界流体萃取的传质过程。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。