A dry beach monitoring method based on photogrammetry and laser ranging
A technology of laser ranging and photogrammetry, which is applied in measuring devices, radio wave measuring systems, electromagnetic wave reradiation, etc., can solve problems such as dry beach length measurement, and achieve the effect of improving measurement accuracy
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[0028] A dry beach monitoring method based on photogrammetry and laser ranging, comprising the following steps:
[0029] Step 1: Use the remote automatic camera system to calibrate the industrial camera and regularly take photos of the dry beach;
[0030] Step 2: According to the dry beach photos, use the waterline automatic recognition algorithm to accurately position the waterline;
[0031] Step 3: Use the precise control servo system to adjust the angle of the laser ranging device so that the laser ranging device is aligned with the identified precise waterline position;
[0032] Step 4: The laser distance measuring device automatically measures the distance from the waterline to the laser lens, and obtains the length of the dry beach through geometric conversion.
[0033] The watershed algorithm is used in the waterline automatic identification algorithm. The watershed algorithm is an image region segmentation method. During the segmentation process, pixels that are simi...
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