Dry beach monitoring method based on photogrammetry and laser ranging
A technology of laser ranging and photogrammetry, which is applied to measurement devices, radio wave measurement systems, and re-radiation of electromagnetic waves, etc., can solve problems such as length measurement of dry beaches, 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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