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- W2363847390 abstract "The digital level was a kind of leveling system including optics, electronic technology, encoding technology, image processing and computer technology. It had been widely used in leveling and industrial measurement because of its fast speed, high precision and convenient operation. All kinds of level staffs were designed based on one-dimensional bar code. And the designs on digital levels were developed around the appropriate encoding method of the staffs. After several years of development, the encoding methods had been patent protected by several foreign surveying and mapping equipment manufactories. The later internal starting made that finding more suitable encoding method is hard. Thus a new coding design based on 2D plane was put forward. This design classified a level staff into 3 modules including number symbol, two-dimension code and circles. The digital level utilized array CCD to get staff images and fast digital image processing algorithms to locate the height of the sight line. The theoretical analysis and model machine tests showed that this design could produce the digital level of high precision and excellent capability." @default.
- W2363847390 created "2016-06-24" @default.
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- W2363847390 date "2015-01-01" @default.
- W2363847390 modified "2023-09-26" @default.
- W2363847390 title "The Principle Design and Testing Progress of a Digital Level System Based on Two-Dimension Encoding Staff" @default.
- W2363847390 hasPublicationYear "2015" @default.
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