对比度

The first step is to eliminate all kinds of noises generated in the process of collecting traffic video by means of median filter; Then we finish image sharpening with Laplace operator to clarify edges of the video images; finally, image contrast is enhanced with the help of the second-developing packet SDK-2000, which is provided by our video-collecting card. This way, much more satisfactory images are obtained, and preparation is already made for the following work, thats image analyse.Thirdly, according to the characteristics of our system, mobile objects are distinguished by means of image difference. Then some features such as regional area, length and width of traffic objects are selected and extracted. After processing of scale filter, we successfully recognize those moving vehicles appearing in the monitoring regions.Fourthly, some corresponding algorithms are brought forward to automatically identify those familiar traffic peccancies of many sorts, such as red light violation, yellow-line covering, parking in prohibited spots, over-speed running and converse running. Then we find means to snap pictures and to intercept videos of the spot, and collect a lot of relevant information such as the time, the block, the running direction and the weather conditions and so on. According to this information, our traffic management departments could make correct decisions on punishing those drivers who have broken the traffic rules.Considering the complexity of traffic environments on particular blocks, in order to monitor other traffic peccancies effectively, we also have designed the scheme to carry out traffic monitoring by manual.

首先运用中值滤波法对视频图像进行去噪处理，然后采用二阶差分法进行图像锐化，再通过视频捕获卡携带的二次软件开发包SDK-2000进行对比度增强，从而得到比较理想的图像，为后续的图像分析工作做准备；第三，根据系统特点，通过背景图像差分法，分割出监测区中的运动目标，然后对交通目标的区域面积、长度和宽度等进行特征提取，再经过尺度滤波处理，从而自动识别出机动车辆目标：第四，分别设计相应的算法，实现对闯红灯、压黄线、违章停车、违章超速及违章逆行等常见的交通车辆违章行为的自动识别，并自动抓拍违章现场，截取违章视频，采集其它相关违章信息，为交通执法部门进行交通违章处罚提供有力依据：考虑到特殊路段特殊环境下的交通复杂性，为了有效监控其它类型的交通违章行为，本文还设计并实现了对交通违章的手动监控模式。

And this was not just plain ole overhyped contrast ratios based just on dynamic irises.

LCD技术再次进步，标称对比度高达60000：1到75000：1，不再仅仅以动态光圈噱头。

CONTRAST – the range of difference in the light to dark areas of an image.

对比度–一个图片上亮到暗区域的变化范围。

Large-screen color TV color, volume, contrast, etc. should be suitably adjusted well, so watch good effect, and energy-saving, but also to extend the service life.

大屏幕彩电的颜色，体积，对比度等应适当地调整好，所以看效果好，节能，而且还延长了使用寿命。

The use of a trough-shaped CRT shadow mask, distance of up to 0.24mm, it is a combination of SONY Trinitron and traditional grid-like mask mask punctate characteristics: pure flat two-dimensional extension of the trough-shaped mask, Compared to traditional point-like mask to space more available to more electronic liquidity to allow more light to reach the screen, the CRT image accuracy, brightness, contrast and color purity has been improved, so more light a clearer picture, and this structure is also conducive to the improvement of resolution and distance.

该显像管使用了槽状荫罩，点距可达0.24mm，它综合了SONY特丽珑栅状荫罩和传统点状荫罩的特点：纯平面两维伸展的槽状荫罩，比起传统点状荫罩来间隙更多，可得到更大的电子流通量，让更多的光线到达屏幕，所以显像管的图像精度、亮度、对比度和色纯度都有了提高，从而获得更亮更清晰的画面，而且这种结构也有利于分辨率和点距的提高。

And it also put forward the principle of panel division, the formula of signal timing, and the requirement of capacity and speed of frame cache.

文章给出了屏体的划分原则，信号时序的计算公式，上屏时钟和点亮效率与其它设计参数的关系，亮度、对比度的计算公式和影响因素。文章分析了扫描电路对帧缓存容量和速度的需求。

The time constant, space resolutions and contrast ratio of the transducer were discussed theoretically and measured experimentally.

理论上分析了该装置的时间常数、空间分辨率和辐射对比度等参数，并进行了实验研究。

The MRI image space resolution ratio reflects its resolving power to tiny subject under high contrast.

空间分辨率反映核磁共振系统在高对比度下对微小物体的分辨能力。

For the limitation of current license plate location measurement methods,a new algorithm is presented,using complicated texture,sharp-cut contrast and exterior to get the contrast energy,based on extremum region of convolution energy.

针对现有车牌定位方法的局限性，提出了一种基于灰度图像求取卷积能量极值区域的车牌定位新方法。该方法充分利用车牌的纹理复杂、对比度鲜明、外型规则等特征构造车辆图像的能量图，然后通过选取能量区域定位车牌。

Study of small scale self-focusing in laser beams by high order contrast .

用高阶对比度研究光束的小尺度自聚焦。

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