| 标准分划尺在CCD压痕直径测量系统校准中的应用 |
| Application of Standard Line-scale to Calibration of Indentation Diameter Measurement System |
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| 中文摘要: |
| 在高精度测量中,为达到测量精度要求,需要对CCD像素进行校准.本文介绍一种简单易行的采用标准分划尺校准CCD像素的方法.首先标准分划尺经过线纹工作基准装置校准;通过对标准分划尺成像,得出在一段标准距离下的像素数;最后得出每个像素所对应的实际距离.实验证明,这种方法能够有效地抑制综合误差,改善测量精度. |
| 英文摘要: |
| During the high accurate measurement,it needs to calibrate the value of the CCD pixel in order to fit the accuracy required.In this paper a simple and convenient method for calibrating the CCD pixel with standard line-scale is introduced.The line-scale is calibrated by laser interferometer.We can get the number of pixel corresponding to a length of standard line-scale.Then we can get the real distance corresponding to every pixel.The results of the experiments show that this method can restrain the composit... |
| 张文军 陈晓梅 |
| 中国一航北京长城计量测试技术研究所,北京100095 |
| 中文关键词: CCD成像 标准分划尺 高精度 像素校准 |
| 英文关键词:CCD imaging standard line-scale high accuracy calibration of pixel |
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