In recent years, with the continuous development and promotion of UAV technology, UAV tilt photography technology has also been rapid development, and with its advantages of high speed, flexibility, high efficiency, reliability, high precision and so on, it has been widely used.<br>Based on the digital three-dimensional model produced by tilt photography and the method of making topographic map by DP modeler software, the digital topographic map of the experimental area is made, which is checked by field measurement,<br>
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