Image processing for coded level ruler of digital levels is the critical technology to realize the automatic reading of digital levels.
数字水准仪编码水准尺的图像处理是实现数字水准仪自动读数的关键技术。
A digitized ruler with absolute code is adopted as the reference of the system, and the ruler is read by the reading system which is composed of optical system, CCD camera and computer.
该系统采用绝对码标尺做基准，使用由光学系统、CCD摄像机和计算机组成的读数系统来读取标尺数值。
She learned to cope, reading with the help of a ruler.
她学习适应，以一把尺来帮助她阅读。
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