查询词典 background image

Methods An unsupervised local and global features extraction method was adopted for the localization of facial features of frontal view face image. First, a threshold was used to segment the image into foreground and background, and the nose was localized by considering the symmetry of the face. Second, Harris operator was adopted to detect interest points in a rectangular area covering all the facial features, and then local maximum of the interest points were detected. And finally, Kmeans clustering method was used to cluster the points and obtain the facial features localization.

针对红外正面脸部图像，采用一种无监督的局部和全局的特征提取方法，首先通过阈值法区分出前景和背景，并根据面部特征对称性在前景中确定鼻区；然后在面部确定一个包含所有特征的矩形区域，利用Harris算子在该区域检测出角点，并找出这些点的局部最大值点；最后用Kmeans方法对这些点进行聚类。

Image distortion can be also introduced by interelectrode capacitance and electronic noise.Moreover,the position resolution,image linearity and background rate of detector are tested.

此外，测试了探测器的暗计数率、线性度以及空间分辨率等性能，同时分析了微通道板在光照情况下的增益特性和暗计数的一般特性及其产生原因。

Based on the isoperimetric graph partitioning method, we propose several practical segmentation algorithms. The first is the iterative two-way cut method which can segment an image into pieces with particular characteristics each other by iteration. The second is simultaneous K-way cut method which divides the image into K parts synchronously. The last is an interactive method separating objects of interest from the background by the user's input specifying the object of interest manually.

基于等周分割方法，我们提出了几种实用的分割算法：第一种是迭代2分方法，它通过迭代的方法将图像分割成各具特征的小区域；第二种是同时直接K分法，同时将图像分割成K个部分；最后一种方法是交互分割法，它依赖人工输入来指定所要分割的感兴趣目标，将图像目标从背景中分离出来。

Is mainly through the time background which as well as the biography experience inquisition locates to author Liang Chenyu,explored it to create "Huan Sha Ji" such has poured into the traditional historical story the deep political content,while eulogized struggle spirit which more country rulers and the ministers vigorous planned to be stronger,make determined efforts,also criticized the Wu rulers and the ministers sybaritism,to be greedy for money lasciviously,does not distinguish loyal deceitful decayed essential the dramatic work behind,what were more was to mold the painstaking care which the Xi Shi image poured into,namely Xi Shi has represented Liang Chenyu in the ideal character image,and was reposing author's ideal of life.

主要是通过对作者梁辰鱼所处的时代背景以及生平经历的探究，来探索其创作《浣纱记》这样一个将传统的历史故事注入了深厚的政治内容，在歌颂了越国君臣发奋图强、励精图治的斗争精神的同时，也批判了吴国君臣骄奢淫逸、贪财好色、不辨忠奸的腐朽本质的剧作的背后，更多的是为塑造西施形象所倾注的心血，即西施代表了梁辰鱼理想中的人物形象，并寄托着作者的人生理想。

The algorithm consists of 3 criterions: Criterion 1 is the mean square value of the difference image, and indicates occurrence of availability change of parking space; Criterion 2 is the variance of difference image; Criterion 3 calculates ratios of foreground to background at first, and then gets the variance of ratios.

监控算法基于以下三种判据：判据一是差影的均方值，可反映车位占用状态变化事件的发生；判据二是差影的方差，判据三是前景与背景比值的方差，通过判据二、判据三可以排除干扰、确认车位状态变化。

Because of the distinct difference in the background color, we use a binary algorithm based on gray mean value and a two-step segmentation method to segment the image. In order to reduce the influence of unlinear change on the image, we divide the shooting score into two parts: integral and floating.

针对靶图像背景颜色对比度大的特点，采用一种基于灰度期望值的图像二值化算法，通过逐步分离的方法，将靶环从背景中分割出来；针对影响靶数精度的主要因素，将靶数分解为整数与小数两部分。

In this paper, based on the comparison between CMOS and CCD image sensor and according to the principles of photometry and radiometry, the imaging range formula of CMOS image sensor in space-based system for space targets is derived with detail analysis, considering the metric of Signal-to-Noise Ratio and taking deep space as background.

在对CMOS和CCD传感器进行对比的基础上，从信噪比的角度出发，以深空作为背景，根据光度学和辐射度学的基本原理，对基于CMOS图像传感器的天基空间目标监测系统的成像距离进行了详细分析和公式推导，并以STAR-1000 CMOS图像传感器为例验证了理论模型和计算公式的正确性，最后对进一步提高CMOS图像传感器成像距离的方法进行了简要分析。

After image registration, the vehicle area is segmented by using the difference image of background and vehicle.

通过对背景图像和车辆图像进行配准运算，再用背景消减法提取目标车辆。

Firstly, the row crop and background were segmented by the excess green value. Secondly, the image strips were divided by crop image horizontally and the position was calculated by detecting the peak on the curve resulting from vertical projection of strips. Finally, the crop rows center lines were accomplished by robust regression.

对作物图像运用过绿特征值分割作物和背景，将得到过绿特征图像划分为若干水平图像条，对图像条过绿特征值进行垂直投影，求取投影曲线上突出峰点的位置；利用稳健回归法对位置点进行线性拟合得到作物的行中心线。

The study is includes: some images having some repeated area is projected on the spherical surface, and the adjacency pixels is matched, the seam line is clear, and get the background image from the panoramic spherical image according to the relation table based on view angle.

该方法研究了利用多幅具有重叠边界的客观图像通过球面投影、相邻图像像素匹配、消除相邻图像拼接处亮度差，进行无缝拼接获得全景图，以及在仿真过程中通过对应关系表得到正确背景图像的方法。

For every one of my New Year resolutions, I have been a backslider for years.

说到我的新年决心，我每年都做

With empathy and focus on a feeling level, we can all relate to the common ground of mutuality of emotions.

有了同情心和感觉上一级的重点，我们都可以涉及到相互的情感共同点。