对比度

The building rules of GLCM （ the best gray levels and pixels interval） were confirmed by experiment. GLCM texture parameters of 300 wood specimens were calculated and assayed, and then placed into a Competitive Neural Network for classification output. The results are as follows: 1） GLCM parameters Angular Second Moment contrast , correlation , entr

以"角二阶矩"、"对比度"、"相关"、"熵"、"方差"、"逆差矩"作为描述木材纹理的特征参数是合适的。2）在比例为1：1的512×512木材图像情况下，生成灰度共生矩阵的最佳像素间距为4，最佳图像灰度级数为128.3）木材纹理图像灰度共生矩阵的"角二阶矩"、"相关"和"熵"值最大的方向为纹理方向。4）竞争神经网络的分类正确率为88％。

Of course, ANSI contrast is not the only factor that contributes to the perception of contrast on the screen.

当然，ANSI对比度并不是唯一的因素，有助于在屏幕上对比的看法。

It had great ANSI contrast at 515:1 and superb color performance.

它伟大的515：1和精湛的色彩表现ANSI对比度。

This is functionally irrelevant, and one can say that the HW10 and HW15 have identical ANSI contrast.

这是不相关的功能，一个可以说HW10和HW15具有相同的ANSI对比度。

It has 800×600 SVGA resolution and comes with 2200 ANSI lumens and a 2000:1 contrast ratio.

它800 × 600的SVGA决议，并配备2200 ANSI流明的亮度以及2000：1的对比度。

Even though there has been a clear increase in on/off contrast, ANSI contrast is about the same.

尽管出现了明显的对比过在增加/，ANSI对比度是相吻合的。

Furthermore, thickness of the external light shielding sheet and height of a pattern unit have a given ratio in order to properly secure an aperture ratio of the external light shielding sheet.

最大限度地吸收及遮挡从外部入射的光的外光遮挡薄片附着在面板的前面，从而能接近原色地实现黑影像，因此具有改善明室对比度的效果。

The result was an air-spaced apochromatic doublet. Color correction was as good as or even exceeding most triplet systems and contrast was far superior.

采用空气分隔的复消色差双片设计出现了，对色差的纠正能力等于甚至超过了三片式的设计，对比度更胜一筹。

The new FS series employs fully hard over-coated fluorite and low dispersion elements in an air-spaced f/8 doublet design that provides the highest contrast, brightest, and sharpest images in an apochromatic refractor today.

新的FS系列使用了完全硬镀膜和低色散透镜，两片空气间隔的透镜f/8能提供最大的成像对比度、亮度和锐度。

The application of an appropriate apodization film to an ordinary lens makes the point amplitude response asymptotic to a Dirac-delta function, or causes an arbitrarily narrow depth of focus. This implicates that we may achieve lateral or axial superresolution through implementing an apodization film.

运用适当形式的光瞳滤波器可以改变成像系统点振幅响应的分布，使其具有类似于冲击函数(Dirac-delta函数)的形式，这样就有可能实现光学超分辨，但变迹术的运用往往会因其强烈的旁瓣效应而导致成像系统对比度的急剧下降。

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