液晶投影显示均匀性及色坐标检测.doc

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液晶投影显示均匀性及色坐标检测,页数:26字数:7195关键词:液晶投影显示数码相机色坐标均匀性摘要在对液晶显示屏颜色和亮度的检测中,如何能够一次将这个屏幕的均匀分布的几个点的色坐标和亮度检测出来是十分重要的。在目前,大多数的颜色和亮度检测仪器大都是以精确的测量一点为主。当然,利用黑白ccd...
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液晶投影显示均匀性及色坐标检测


页数:26 字数:7195

液晶投影显示均匀性及色坐标检测
关键词:液晶投影显示 数码相机 色坐标 均匀性
摘要
在对液晶显示屏颜色和亮度的检测中,如何能够一次将这个屏幕的均匀分布的几个点的色坐标和亮度检测出来是十分重要的。在目前,大多数的颜色和亮度检测仪器大都是以精确的测量一点为主。当然,利用黑白CCD进行整个屏幕的测量也是有的,但由于需要用到滤光片而使得整个仪器在制造上十分不便。
为此,本文主要采用了数码相机作为探测仪器,通过对数码相机所拍图片的电平值与刺激值的转换的分析和对其颜色系统的定标可以达到和显示屏颜色系统的转换,再经过一系列计算可以得到所拍摄图片上各个点的色度坐标和其亮度值。
此外,本文还对测量的结果进行了分析,得到此中检测方法的计算结果和标准值的误差。
ABSTRACT
In the measurement of the color and the brightness of the liquid crystal screen, how to measure the color coordinates and the brightness of some points that averagely distribute on the screen one time is very important. But at present, most of the apparatuses for the measurement of the color and the brightness are accurately measure only one point. Of course, measurement all the screen with black and white CCD is also receivability. But it needs the filters, the manufacture of the apparatus is very difficult.
For this reason, this article adopted the digital camera as the apparatus of the measurement, via the analysis of the transition between the electricity level and the stimulative value of the photos and confirms the coordinates of the color system, we can get the transition of the color system between the photos and the screen. And then, after a series calculation, we got the color coordinates and the brightness of each point on the photo.
Besides, this article analyzed the result of the measurement, and got the error between the result and the standard value. 序言
随着电子计算机工业的发展及信息社会的到来,大屏幕显示在生活、娱乐、军事等各方面都起着重要的作用。当前市场上占主导地位的投影显示是阴极显象管技术,这种显示产品通常需要3