查询词典 background image

On the basis of the image correlation and the nonparametric kernel density estimation, kernel density functions of background and foreground were built., Bayesian theory was used to estimate the prior probabilities of the foreground and the background, so an estimative threshold was obtained and the classification of the background and the foreground was realized.

首先，在图像相关性的基础上，利用非参数核密度估计的方法，建立前景和背景的核密度函数，再利用贝叶斯理论，估计出背景和前景的先验概率，两者相结合得到一个估计的阈值，从而实现目标和背景的分类。

When an image digital holographic microscopy layout is employed, the Fresnel integral cannot be used in separating the reconstructed image from its conjugate image and background.

在像面数字全息中，用菲涅尔衍射积分进行复振幅再现的方法已不适用，将相移同轴技术与数字全息显微术结合，研究了以平行光为参考光记录相移同轴像面显微数字全息图及其幅度和相位再现方法。

Its research attracts many authors; therefore, the vehicle type recognition problem is studied. The main researches and results can be described as follows:(1) Vehicle image pretreatment: For the particularity of the vehicle image of this paper, the image pretreatment includes grey scale and background processing.

本文正是在这一背景下，对车型识别的两种算法和识别技术进行了研究，主要的研究工作包括以下几个方面：(1)车辆图像预处理：针对本文研究的车辆图像的特点，车辆图像预处理主要包括图像灰度化和去除背景两部分。

In the image processing , the noise filter principal of the digital logical circuit is used to enhance the image background characteristics . And the average of grey-leveland standard deviation are also adopt to increase the contrast of image , such that the identification rate is improved .

在影像波方面，系以位辑电之杂讯过原增强影像中的背景特徵，并辅以灰平均值与标准差之运算法则增强影像中印字与背景特徵的对比，避免在后续的影像处过程中，将背景特徵归为印字特徵。

In the studying of image segmentation, six crucial technologies havebeen developed successfully. 1 In one dimension histogram of original DRimage of luggage, there remain maximum-value wave crest havingapproximately stationary position, and the first minimum to the left of thewave crest performs excellently to be used to get rid of background of DRimage. 2 Open operation, one type of math morphology, is the right idea toerase luggage disturbance in DR image and at the same time, can be retaininteresting region appropriately. 3 After open operation, there are only a few minimums on image histogram, one of which can be to segment image furtherand achieves satisfying result. 4 Method of histogram analyzing and that oferosion performs well in the re-segmentation of conglutinative region in DRimage. 5 Method of image distance switch can ensure Luggage CT sectionautomatically obtained to have rich suspicious region information. 6 Todecompose structure element of math morphology is a way to save a great dealrunning time for automatically discerning interesting regions algorithm,apparently improving implementation efficiency.

在对图像可疑区域分割研究中，主要开发成功以下几项关键技术：1发现原始箱包DR图像的一维直方图中，均具有位置相对稳定的最大值波峰，以波峰左边第一个极小值为分割阈值，去除DR图像背景，效果非常好。2运用数学形态学中的开运算能够非常有效地去除箱子的干扰，同时能够比较好地保留可疑区域。3发现开运算后的DR图像直方图只有若干个极小值点的特点，其中用最大值波峰左边的第二个极小值点进一步分割DR图像，能够更有效地提取箱包中的可疑区域。4运用直方图分析法和腐蚀法，对粘连区域实行再分割，效果较好。5运用距离变换法，能确保自动设定的箱包CT截面包含丰富的可疑区域信息。6运用形态学结构元素分解技术，大幅度减少可疑区域的自动判别算法运行时间，提高算法软件执行效率。

Ten contamination features are extracted from the contaminated insulator infrared image,viz.the highest , the lowest , the mean temperature of the background, the temperature variance of the background ,the highest ,the lowest ,the mean temperature of the contaminated insulator discal surface , the temperature variance of the insulator discal surface ,the maximum and the mean temperature increase of the discal surface contrasting to the mean temperature of the background .

本文研究从分割后的污秽绝缘子盘面图像中提取了10维原始污秽特征，即：绝缘子红外热像背景的最高温度、最低温度、平均温度、背景温度分布的方差值、盘面图像的最高温度、最低温度、平均温度、盘面温度分布的方差值、盘面温度的最大温升、盘面温度的平均温升。

A pivotal problem to recognize of the precise position of laser facula has been solved in the process of design work: Firstly the method of background-subtraction is used to eliminate or weaken the affect of background light. Secondly the image threshold segmentation operation and morphologic operation are used to locate the sketchy position of laser facula ; Then the new method of Extracting Edge are designed based on character of laser facula , by using this method in the search area the edges of laser facula can be extracted effectively; At last the optimum picture of laser facular is selected by using the triggering function of hardware and function of software. The exact result can be obtained only by image processing to optimum picture.

在设计过程中解决了精确确定激光斑中心位置这一关键问题：首先利用减背景法，消除或减弱背景光的变化对确定激光光斑中心的影响；再对减完背景后的图片进行阈值分割和二值化处理以确定激光光斑的粗略位置；根据本文激光光斑的特征，设计了一个有效的边界提取算法，对指定区域进行提取激光光斑边界操作，精确的确定激光斑中心位置；最后利用硬件的触发功能和软件编程实现了激光光斑最佳图片的判读，只有对最佳图片进行图像处理得到结果才是准确的。

In the Sixth Chapter, the Wavelet analysis method is introduced in discussing some acoustic imaging problems related to the physical background of the ultrasonic detection. In the light of the solution of some theoretical problem in the 2D Wavelet transmission of two components form, the enhancement and identification of the spotty and fibriform faults of the acoutic image, along with two acoustic image deblurring methods based respectively on the acoustic physical feature analysis and the acoustic image's spatial feature analysis of the object, are realized. Therefore the image degeneration problem resulting from the acoustic beam diffusion or the acoustic focus diffusion in the ultrasonic detection are effectively improved. The software for this purpose has also been developed.

第六章首次应用小波分析的方法，研究了与超声检测的物理背景有关的一些声象处理问题，在解决了二分量形式的二维小波变换中的一些理论问题的基础上，建立起了对声象中点状和线状缺陷目标的增强与分离方法，以及分别基于目标的声学物理特征分析和基于目标声象空间特征分析的二种声象弥散消除方法，实验分析结果表明，这种方法较好地解决了超声检测中由于声束截面或声焦点扩散所造成的成象退化问题。

Rifling-treating is a key technique because rough rifling adds difficulty to image processing. So the rifling-treating uses the method of area gray-scale average, which makes up the incontinuity of image. Image segmentation aims to separate the defects from the background.

膛线的处理是火炮内膛缺陷处理的关键之一，它的凹凸不平给图像处理带来极大的困难，采用区域灰度值平均法，较好的克服了图像的不连续性。

After this procession has been done, the background is easily filtered, the edge of moving objects are reserved. There are some things with invariableness color, and only similar color objects in the background. We set a filter template. Others color pixeles are filtered and the image is smoothed for eliminating noise, then the remarkable color region of the image is considered as moving object.

对于一些特殊的物体比如整个目标都是恒定色，而背景中又无这种相近颜色的物体，设置一个模板进行滤波，把该物体的三种颜色相近的像素点留下，其余点滤去，同时再作平滑处理去噪声，则在图像显著的颜色区域即能找出运动物体。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。