查询词典 feature space

Extensity, abstractness, polymorphism and space time are their basic feature.

从而，明确了研究工作的基础是对空间数据的定义、存储和处理。

Local invariant feature ; object recognition ; image matching ; image classification ; scale space ; affine invariant moment ; detector ; descriptor

吉林大学；刘萍萍局部不变性特征；物体识别；图像匹配；图像分类；尺度空间；仿射不变矩；检测子算法；描述子算法

In this paper, searching technology of product information based on knowledge was researched. On the aspect of cognition, we researched the relation between user\'s cognition and designer\'s cognition, explored the knowledge flow in the process of product development, set up a matching model between user\'s knowledge and designer\'s knowledge, brought forward a modeling method based on users\' cognition, and set up a measurable model of product feature; coded and decoded product form element, set up a computer aided product form design system and image evaluating system based on the result of measurement. Accordingly, the product style and product image were systematically discussed, the recognition space of product style and image was constructed, the factors that affect product style and image were put forwards and analyzed, and the relation between product image and form elements was tested by experiments. Furthermore, the product automatic recognition technologies were discussed.And then, with the media of concept model and the kernel of parameter technology, a mathematic model that describing product layout design by constraints and rules was presented. Furthermore, a product design integration system based on imagery thinking including product fonii base system based on imagery thinking, product form design system based on imagery thinking and product form intelligent design system based on space layout were set up, which tested the system and provided a new way for product innovative design.

本文以产品特征描述目标对象——产品，研究一种基于知识的产品信息检索技术，在对产品的认知方面，研究了用户认知和设计师认知之间的关系，研究了产品开发过程中的知识流传递过程，建立了用户知识和设计知识之间的匹配模型，提出了一种基于用户知识的产品建模方法，它不但提取了产品的特征，还建立了产品特征量化模型，从而实现了产品知识的量化描述；对产品造型元素进行分解和编码，利用实验量化结果构造计算机辅助产品形状设计系统和心象评价系统；使用量表分析造型元素的心象尺度，构造输入、输出系统，建立了产品设计知识库咨询系统，可以方便用户和设计师来导入或查询产品设计方案；实现了对产品造型心象的分类知识库系统，便于设计师存储或查询，辅助设计师进行产品创新设计；通过实验量化了产品造型参数和产品心象参数之间的关系，并在此基础上建立了基于心象的产品形状设计系统，为产品空间布局方案智能生成系统奠定基础；在基于知识库的基础上建立了产品空间布局方案智能生成系统，通过更改概念产品造型参数，实现了产品设计方案的智能生成，使系列化的设计工作变得十分方便；将产品的心象运用到实际设计过程中，能够引导流行趋势，创造出产品无形的设计价值。

Characteristic number of inertia moment of gray level co-occurrence matrix can reflect the feature of complexity of image gray space. Optimum space coefficient of LOG operator can be ac-quired effectively and most noise of images can be removed.

通过纹理分析，利用灰度共生矩阵惯性矩特征值能够反映图像灰度空间复杂度的特性，成功获取了LOG边缘检测算子最佳空间系数，抑制了图像中的大部分噪声。

Last, this paper introduced some concepts of multiscale geometrical analysis and curvelet transform theory. Because curvelet can showed this feature more 'sparsely' in the function included singular curve or singular side in two dimension space or multi-dimension space. This paper provided a robust digital watermarking technology algorithm based on curvelet transform. watermarking information was embedded into coarse scale coefficients after curvelet transforming, choose right embedding strength. Testing proved it has good invisibility and robustness.

最后，介绍了多尺度几何分析和曲波变换理论的相关概念，鉴于曲波能对二维乃至高维空间中含奇异曲线或者曲面的函数进行更"稀疏"地表示这一特性，本章提出了一种基于Curvelet变换的鲁棒数字图像水印算法，该算法将水印信息嵌入到经曲波变换后的图像的粗尺度系数中，合理选择的嵌入强度，试验表明该算法具有较好的隐蔽性和鲁棒性。

Vehicle headlamp provided with a metal halide lamp comprising a discharge vessel surrounded with clearance by an outer envelope and having a ceramic wall which encloses a discharge space containing xenon and an ionizable filling, wherein in said discharge space two electrodes are arranged whose tips have a mutual interspacing EA so as to define a discharge path between them, wherein the discharge vessel has an internal diameter Di at least over the distance EA, and wherein Di is smaller than or equal to 2 mm and the relation EA/Di is smaller than 6, with the special feature that said vehicle headlamp has not more than one band-shaped light-absorbing coating laterally of the discharge path.

一种配置金属卤化物灯的车辆前灯包括：放电容器，其被外壳有间隙地包围，其具有陶瓷壁，所述陶瓷壁封闭包含氙和可电离填充物的放电空间，其中两个电极布置在所述放电空间内，所述电极末端具有相互间隔EA，因而在它们之间定义放电路径，其中放电容器至少沿着距离EA具有内径Di，其中Di小于或等于2mm，以及关系式EA/Di小于6，其特征在于，所述车辆前灯放电路径的侧向方向具有至多一条带状光吸收涂层。

The feature of this paper lies in combining economic growth theory, theory of the new economic geography with economic integration space, charactering the type of rural economy with space Statistics technology, and conducting a 2-scale empirical study on rural economic growth factors in time and cross-section by panel data model, providing a basis for making policy of sustainable development of rural economy.

本文特色在于将经济增长理论、新经济地理理论和空间经济结合，使用空间统计技术对农村经济类型在空间上进行刻画，并运用面板数据模型对农村经济增长因素在时间和截面2个尺度进行实证研究，为农村经济的持续发展政策制定提供了依据。

At present, the progress of our understanding the vision mechanism is behind the development of computer processing methods, and how to bestow the early human vision function, such as multiscale transform、adaptive smoothing、the time-space feature of space texture perception etc., on machine, is an important study branch of computer vision.

目前，我们对视觉机理的理解还落后于计算机处理手段的发展，如何将人类视觉的一些初级功能赋予机器，如多分辨分析、自适应平滑、空间纹理感知的时空特性等，是当前计算机视觉的研究重点。

According to the distribution feature of floral envelope, the distance between petals to calculate translucent shadow distribution was used. 3-D space question was changed to 2-D space question thought many times mapping and many buffer zone.

花瓣的间距基于图像空间实现，通过多次投影将三维空间的运算转化为二维问题，使用多缓冲区记录花瓣间的关系，最终实现半透明花朵的可视化三维图形。

Three years later, Toscana developed the architectural feature that adapts to family and business space and carried out newly room inteqration Ceiling space connected intelligent electric with decorated material.

三年后，研制出在居室与商业空间中能结合建筑的特征，实现智能电气与装饰材料为有机结合的新型室内集成吊顶空间。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。