The correct recognition of bar code image is prerequisite for correct digital leveling with a bar code ruler.
在利用条码标尺定位测量的数字水准仪中，标尺条码图像的正确识别是实现水准测量的前提。
The positioning algorithm was studied of the triple sinusoidal bar code staff used in digital leveling to accomplish automatic staff reading.
研究了三正弦码标尺应用于电子水准测量中实现标尺自动化读数的定位算法。
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