对比度

The paper solved the problems of less valid data in thermal infrared imager,impurity being on surface of specimen and uneasy dipartite corrosion area in image which happened in detection of structure parts' hidden corrosion by thermal wave imaging.Firstly,the contrast of one unheated image was enhanced by self-adaptive mathematical morphology sharpening,and then location of the impurity was confirmed by change of the image grads.

针对飞机结构隐藏腐蚀热波成像检测中出现的试件表面存在杂物、热像仪中有用数据较少、图像序列中腐蚀区域不明显等情况，首先通过对加热前的一幅图像进行自适应形态学锐化处理，提高图像的对比度，并根据图像梯度的变换情况确定出杂物的位置。

An algorithm based on dyadic wavelet transform for speckle reduction and contrast enhancement in intravascular ultrasound images was presented.

提出基于二进小波变换的血管内超声图像血液斑点噪声抑制和对比度增强算法。

Blood speckle noise in the IVUS image would affect the validity of edge detection badly. A temporal/spatial filtering method was used to preprocess the IVUS image to restrain the noise. Then a method to automatically detect the intima and ectoblastic edge of IVUS image was presented. This method is based on the active contour model and the contrast properties of IVUS image, which makes use of the Hopfield NN and simulated annealing algorithm.

为解决血管内超声图像中严重的血液斑点噪声影响边缘提取方法的有效性问题，采用一种时/空滤波方法对IVUS图像进行降噪预处理，基于活动轮廓模型和IVUS图像的边缘对比度特征量，利用Hopfield神经网络并结合模拟退火算法自动提取IVUS图像的冠脉血管壁内、外膜边缘。

The electrooptical functions of the liquid crystal display, such as contrast,luminance etc., are greatly correlative with used polarizers.

液晶显示器的显示性能，如对比度，亮度等，与所用偏振片的性能有很大关系。

The electrooptical functions of the liquid crystal display, such as contrast, luminance etc., are greatly correlative with used polarizers.

摘 要：液晶显示器的显示性能，如对比度、亮度等，与所用偏振片的性能有很大关系。

Electrophoretic particle is very important to the contrast and response time of electronic ink displays.

电泳颗粒性能对电子墨水显示器的对比度、响应时间有重要的影响。

Computed tomography enteroclysis and magnetic resonance enteroclysis, as new imaging technologies, provide three-dimensional imaging capabilities and excellent soft-tissue contrast, which can analyze the abnormalities of peripheral intestinal structure as well as the tunica mucosa, greatly advancing the cognition of the imaging diagnosis for the intestinal disease.

新的影像技术CT小肠灌肠造影、MR小肠灌肠造影具有良好的软组织对比度及三维成像能力，不仅可以观察黏膜，同时能够分析肠管周围的改变，提高了人们对小肠疾病影像诊断的认识。

Results:The monocular and binocular amplitudes of the p-wave and the ratio values of the B/M were significantly different between the control and esotropic group under different contrasts.

结果：斜视组中85%红绿抑制试验阳性，正常对照组与内斜视组在50%与70%对比度下的P100单眼振幅、双眼振幅及其B/M比值差异均存在显著性意义。

Based on the demand for image enhancement in corner extraction of image segmentation,this paper researches homomorphic filtering technique.

1概述图像增强是图像预处理中提高视觉效果的重要手段，包括去除噪声、扩展对比度等。

In our algorithm, homomorphic filtering and direct contrast enhancement are combined together.

该算法将同态增晰和直接对比度增强算法结合，使得图像中的局部信息与全局信息在增强时都能被利用。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐