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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

Active Publication Date: 2021-10-26
CHINA NONFERROUS METAL CHANGSHA SURVEY & DESIGN INST CO LTD
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Problems solved by technology

[0012] The purpose of the present invention is to provide a dry beach monitoring method based on photogrammetry and laser ranging to solve the problem of dry beach length measurement

Method used

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Examples

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Embodiment 1

[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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Abstract

The invention provides a dry beach monitoring method based on photogrammetry and laser ranging. It includes the following steps: Step 1: Use the remote automatic camera system to calibrate the industrial camera and regularly take photos of the dry beach; Step 2: According to the photos of the dry beach, use the automatic waterline recognition algorithm to accurately position the waterline; Step 3: Use precise control The servo system adjusts the angle of the laser ranging device so that the laser ranging device aligns with the identified precise waterline position; Step 4: The laser ranging device automatically measures the distance from the waterline to the laser lens, and obtains the dry beach through geometric conversion length. The invention integrates image recognition, laser ranging, and precise control of the servo system; by automatically identifying the waterline, the precise control of the servo system adjusts the angle of the laser ranging device, and the laser ranging device automatically measures the distance from the waterline to the laser lens, realizing dry Automated measurement of beach length.

Description

technical field [0001] The invention relates to the technical field of dry beach monitoring, in particular to a dry beach monitoring method based on photogrammetry and laser ranging. Background technique [0002] Tailings pool refers to the place where dams are built to intercept valley mouths or enclosures, and are used to stockpile metal or non-metal mines for ore sorting and then discharge tailings or other industrial waste. The tailings pond is a high potential energy man-made debris flow hazard, and there is a danger of dam failure. Once the accident occurs, it is easy to cause serious accidents. At present, the number of tailings ponds in my country is large and widely distributed. Many tailings ponds have been in operation for many years, and the capacity of the tailings ponds is gradually decreasing. The ability to resist natural disasters continues to decline, and safety hazards are increasing. The safety of tailings ponds is related to the safety of people's life,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/08
CPCG01S17/08
Inventor 熊明辉
Owner CHINA NONFERROUS METAL CHANGSHA SURVEY & DESIGN INST CO LTD
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