CN117856795A - Offshore pile foundation three-dimensional sonar data compression method and system based on edge calculation - Google Patents
Offshore pile foundation three-dimensional sonar data compression method and system based on edge calculation Download PDFInfo
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- 238000009991 scouring Methods 0.000 description 7
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Abstract
The invention discloses a three-dimensional sonar data compression method of an offshore pile foundation based on edge calculation, which comprises the following steps: acquiring height value data of a target lattice at the current moment through a three-dimensional sonar, and calculating based on the height value data of the current moment and the height value data of a preset reference moment to acquire a height value change data string of the target lattice, wherein each data in the height value change data string is represented by 2 bytes; performing high-low data separation on each data in the high-value change data string based on a preset rule to extract high-level 1-byte data and/or low-level 1-byte data of each data in the high-value change data string; describing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset rule to obtain compressed data; and sending the compressed data to a server for data analysis by the server. The data is compressed efficiently, so that the efficient transmission of the offshore pile foundation side-sweeping data is realized.
Description
Technical Field
The invention belongs to the technical field of three-dimensional sonar, and particularly relates to a method, a system, computer equipment and a storage medium for compressing three-dimensional sonar data of an offshore pile foundation based on edge calculation.
Background
The environmental conditions of the offshore pile foundation are very complex, and the influence of meteorological hydrologic factors such as wind, wave, current and the like on the foundation of the wind turbine cannot be ignored. Particularly after pile foundation infrastructure, the movement of the water body caused by tide and wave can be obviously influenced, so that the sand carrying capacity of water flow is improved. If the bed is susceptible to erosion, then scour pits may form locally on the pile foundation, which may affect the stability of the pile foundation. The three-dimensional sonar is mainly used for acquiring and imaging underwater submarine profile data, and one conventional application is submarine scour monitoring or sediment accumulation measurement on foundations such as offshore pile foundations and jackets.
In order to know and master the actual condition of the scouring depth of the offshore pile foundation, the three-dimensional sonar is installed underwater on the pile foundation with the designed height, the precision of the three-dimensional sonar reaches the mm level, and a fixed range is scanned at fixed time to form the submarine scouring height data of the pile foundation; the actual submarine scouring condition and trend of the pile foundation can be clearly depicted through the comparison of submarine scouring height data of each three-dimensional sonar side-scanning pile foundation obtained at different time points. The offshore wireless communication condition resources are very limited, obtained data are usually required to be compressed, and the compression degree of the three-dimensional sonar side scanning data has different degrees of effects on aspects such as data transmission, rapid imaging and data storage, so that the offshore pile foundation safety monitoring system is very important.
Disclosure of Invention
In order to solve the problems, the invention aims to provide the offshore pile foundation three-dimensional sonar data compression method and the system based on the edge calculation, which can realize the efficient compression of the offshore pile foundation three-dimensional sonar side scanning data, thereby realizing the efficient transmission and the rapid imaging of the offshore pile foundation three-dimensional sonar side scanning data.
In order to achieve the above purpose, the technical scheme of the invention is as follows: an offshore pile foundation three-dimensional sonar data compression method based on edge calculation comprises the following steps: acquiring height value data of a target lattice at the current moment through a three-dimensional sonar, and calculating based on the height value data of the current moment and the height value data of a preset reference moment to acquire a height value change data string of the target lattice, wherein each data in the height value change data string is represented by 2 bytes; performing high-low data separation on each data in the high-value change data string based on a preset rule to extract high-level 1-byte data and/or low-level 1-byte data of each data in the high-value change data string; describing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset rule to obtain compressed data; and sending the compressed data to a server for data analysis by the server.
In a preferred embodiment of the present invention, acquiring, by three-dimensional sonar, height value data of a target lattice at a current time further includes: dot matrix encoding is carried out on the target range based on a preset resolution; and controlling the three-dimensional sonar to laterally sweep each point in the target lattice based on the lattice codes so as to acquire the height of each point.
In a preferred embodiment of the present invention, the calculating to obtain the height value change data string of the target lattice based on the height value data of the current time and the height value data of the preset reference time further includes: taking the height value data at the previous moment as the height value data at the preset reference moment, and performing difference operation on the height value data at the current moment and the height value data at the preset reference moment to obtain a height value change data string of the target dot matrix.
In a preferred embodiment of the present invention, the separating the high and low data of each data in the height value change data string based on a preset rule further includes: extracting high-order 1-byte data and low-order 1-byte data of each data in the height value change data string respectively under the condition that the maximum value MaxH in the height value change data string is more than 255; extracting low-order 1-byte data of each data in the height value change data string under the condition that the maximum value MaxH in the height value change data string is more than 0 and less than or equal to 255; and storing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset.
In a preferred embodiment of the present invention, describing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset rule to obtain compressed data further includes: the preset rule is as follows: y, X, height number n, height value 1, height value 2.Δy, X, height number n, height value 1, height value 2. Wherein Y represents the number of rows of each height value change data, X represents the number of columns of each height value change data, n represents the number of points where the height change occurs, and the height value n represents the high-order 1-byte data or the low-order 1-byte data of a specific value of the height change.
In a preferred embodiment of the invention, in case of a maximum value MaxH >255 in the height value change data string, the method further comprises: extracting all points larger than 255 in the height value change data string to be marked as abnormal points; transmitting the abnormal information corresponding to the abnormal point to a server in a preset time to perform priority analysis processing, wherein the abnormal information at least comprises: abnormal point coordinates, high-order 1 byte data of the abnormal point, and low-order 1 byte data of the abnormal point.
In a preferred embodiment of the present invention, the step of acquiring the height value change data string further comprises: and under the condition that the height value change data string contains data smaller than 0, carrying out preset calibration on all the data smaller than 0, and sending lattice coordinates and data values corresponding to the data smaller than 0 to a server.
Based on the same conception, the invention also provides a three-dimensional sonar data compression system of the offshore pile foundation based on edge calculation, which comprises the following steps: the three-dimensional sonar controller is realized by the singlechip with the server, the three-dimensional sonar controller further includes: the acquisition module is used for acquiring the height value data of the target dot matrix at the current moment through the three-dimensional sonar, and calculating the height value data of the target dot matrix based on the height value data of the current moment and the height value data of the preset reference moment to acquire a height value change data string of the target dot matrix, wherein each data in the height value change data string is represented by 2 bytes; the extraction module is used for separating high-level data and low-level data of each data in the height value change data string based on a preset rule so as to extract high-level 1-byte data and/or low-level 1-byte data of each data in the height value change data string; the compression module is used for describing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset rule to obtain compressed data; and the transmission module is used for sending the compressed data to a server for the server to analyze the data.
Based on the same conception, the present invention also provides a computer device comprising: a memory for storing a processing program; and the processor is used for realizing the offshore pile foundation three-dimensional sonar data compression method based on the edge calculation when executing the processing program.
Based on the same conception, the invention also provides a readable storage medium, wherein a processing program is stored on the readable storage medium, and the processing program realizes the offshore pile foundation three-dimensional sonar data compression method based on the edge calculation when being executed by a processor.
By adopting the technical scheme, the invention has the following advantages and positive effects compared with the prior art:
1. according to the invention, after the height value data of the target dot matrix preset in the target range is obtained through the three-dimensional sonar, the height value data of the target dot matrix is subjected to difference operation with the height value data obtained last time to obtain a height value change data string of the target dot matrix, the height value change data string comprises the height change value of each point in the target dot matrix, only the height value change data of the point with the height value change is extracted, and the data quantity required to be transmitted is reduced. In addition, the height value change data is further separated into high and low positions, that is, if the height value change data only occupies 1 byte at low position, the space of 1 byte can be saved after the height value change data is separated into high and low positions, so that the compression rate is further improved.
2. According to the technical scheme, through high-low bit separation of the high-level change relative value data string, the obtained data of the high-level change relative value data string ByteSTr2, namely the scouring height is greatly changed, the data can be defined as data with higher transmission priority, once the data appear, the three-dimensional sonar controller can firstly and timely transmit the data back to the server at the first time, an AI early warning model of the server monitoring system can firstly process the data, early warning suggestions are given, and the response time of the system is greatly improved.
Drawings
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a flow chart of a three-dimensional sonar data compression method of an offshore pile foundation based on edge calculation;
fig. 2 is a schematic diagram of three-dimensional sonar lateral scanning operation of the offshore pile foundation.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples. Advantages and features of the invention will become more apparent from the following description and from the claims. It is noted that the drawings are in a very simplified form and utilize non-precise ratios, and are intended to facilitate a convenient, clear, description of the embodiments of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
The embodiment provides a three-dimensional sonar data compression method of an offshore pile foundation based on edge calculation, which comprises the following steps:
acquiring height value data of a target lattice at the current moment through a three-dimensional sonar, and calculating based on the height value data of the current moment and the height value data of a preset reference moment to acquire a height value change data string of the target lattice, wherein each data in the height value change data string is represented by 2 bytes;
performing high-low data separation on each data in the high-value change data string based on a preset rule to extract high-level 1-byte data and/or low-level 1-byte data of each data in the high-value change data string;
describing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset rule to obtain compressed data;
and sending the compressed data to a server for data analysis by the server.
According to the technical scheme, after the height value data of the target dot matrix preset in the target range is obtained through the three-dimensional sonar, difference operation is carried out on the height value data and the height value data obtained last time to obtain a height value change data string of the target dot matrix, the height value change data string comprises a height change value of each point in the target dot matrix, and if the heights of certain points in two continuous side scanning are not changed, the height change value corresponding to the point is 0. After the altitude change data string is acquired, since each data in the altitude change data string is represented by 2 bytes, but since the scouring of the seabed is generally a very slow process, the altitude of many points in the target lattice will not generally change, that is, there is a large amount of 0 in the acquired altitude change data string. According to the technical scheme, only the height value change data of the point where the height value is changed is extracted, the data quantity to be transmitted is reduced, in addition, the height value change data is further subjected to high-low separation, namely, if the height value change data only occupies 1 byte at low position, the space of 1 byte can be saved after the high-low separation is performed, and therefore the compression rate is further improved.
If the height data string of each side sweep of the three-dimensional sonar is transmitted back to the monitoring center, the data size is huge for the wireless communication condition at sea under the condition that the number of pile foundations is large enough. According to the technical scheme, the high-efficiency compression of the data is scanned on the side of the three-dimensional sonar of the offshore pile foundation can be achieved, so that the high-efficiency transmission and the rapid imaging of the data are achieved on the side of the three-dimensional sonar of the offshore pile foundation, and the offshore pile foundation is monitored safely and reliably.
After receiving the compressed data, the server decompresses and recovers the data, and then further analyzes and processes the data.
Preferably, the obtaining, by the three-dimensional sonar, the height value data of the target lattice at the current moment further includes:
dot matrix encoding is carried out on the target range based on a preset resolution;
and controlling the three-dimensional sonar to laterally sweep each point in the target lattice based on the lattice codes so as to acquire the height of each point.
And (3) performing lattice coding on the target range in advance, namely determining the side-scanning points, wherein the distance between adjacent points is the above-mentioned division ratio, and determining the distance between the adjacent points in the lattice according to the actual requirement of the site.
Preferably, the calculating based on the height value data at the current time and the height value data at the preset reference time to obtain the height value change data string of the target lattice further includes:
taking the height value data at the previous moment as the height value data at the preset reference moment, and performing difference operation on the height value data at the current moment and the height value data at the preset reference moment to obtain a height value change data string of the target dot matrix.
For example, first, starting with (y=0, x=0), Y is a row, X is a column, and the direction of the X is the same and gradually increases with the X column, and then gradually increases with the Y row; the height data for each row is organized in a serial fashion.
As shown in FIG. 2, a three-dimensional sonar lateral scanning working principle diagram of the offshore pile foundation is shown.
The three-dimensional sonar is fixed on two sides of the stake machine, and the origin of each scanning is controlled by a three-dimensional sonar stepper motor; beam opening angle of three-dimensional sonar: high-frequency high-directivity 1-degree conical sonar wave beam with highest precision up to the mm level; unit height: 5mm (adjustable); measurement accuracy: depending on the angle of incidence (a) between the acoustic wave and the sea floor, the greater the angle of incidence, the higher the accuracy, i.e. the greater the distance (R), the poorer the accuracy.
Then, the three-dimensional sonar side sweep is used for forming a data string of the submarine pile foundation flushing depth (namely, the height data of each point in the same direction), and the height of each point is described by adopting unsigned 2 bytes, namely, the maximum unit height 65535. Taking 400×200 points as an example, the three-dimensional sonar side scan obtains 400 rows, and each row has a height data string of 200×2=400 bytes, and the whole lattice occupies about 156Kb of storage space.
And correspondingly subtracting the three-dimensional sonar side-sweep point-by-point height value (original data) obtained at the current moment from the three-dimensional sonar side-sweep point-by-point height value (original data) obtained at the previous moment to obtain 2-time height change relative value data, namely the height value change data string WordStr0. The maximum height change relative value MaxH at this time is calculated from the height value change data string, wherein each data in the height value change data string WordStr0 is represented by 2 bytes.
Preferably, the step of separating the high and low data of each data in the high value change data string based on a preset rule further includes:
extracting high-order 1-byte data and low-order 1-byte data of each data in the height value change data string respectively under the condition that the maximum value MaxH in the height value change data string is more than 255;
extracting low-order 1-byte data of each data in the height value change data string under the condition that the maximum value MaxH in the height value change data string is more than 0 and less than or equal to 255;
and storing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset.
For example:
0 < MaxH < 255, extracting the low-order 1 byte of each height change data from the height change data string WordStr0 to form a height change relative value data string ByteSt 1 of the low-order 1 byte;
MaxH >255, extracting the high-order 1 byte and the low-order 1 byte of each high-order from the 2-byte high-order relative value data string to form a high-order 1-byte high-order relative value data string ByteSTr2 and a low-order 1-byte high-order relative value data string ByteSTr1;
the maximum value that the low level 1 word can represent is 255, the maximum value that the high level 1 word can represent is 65535, and assuming that the scanning accuracy of the three-dimensional sonar is 5mm, the maximum change height that the low level 1 word can represent is 255 x 5 mm/1000=1.275 m. Since the flushing of the sea floor is typically a slow process, it is rare to produce a varying height of more than 1 meter in two consecutive side sweeps. According to the scheme of the high-low separation as above, the height value variation data string WordStr0 can be compressed by about 50% of the data space.
Preferably, describing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset rule to obtain compressed data further includes:
the preset rule is as follows:
y, X, height number n, height value 1, height value 2.
Δy, X, height number n, height value 1, height value 2.
Wherein Y represents the number of rows of each height value change data, X represents the number of columns of each height value change data, n represents the number of points where the height change occurs, and the height value n represents the high-order 1-byte data or the low-order 1-byte data of a specific value of the height change.
Hereinafter, the height difference of the ByteStr1 and the ByteStr2 will be described.
The rules described are:
y, X, height number n, height value 1, height value 2.
Δy, X, height number n, height value 1, height value 2.
Wherein Y represents the number of rows of each height value change data, X represents the number of columns of each height value change data, n represents the number of points where the height change occurs, and the height value n represents the high-order 1-byte data or the low-order 1-byte data of a specific value of the height change.
Referring to Table 1, the relative values of depth and height of the three-dimensional sonar side-sweep pile foundation of the offshore pile foundation are shown.
Table 1:
since MaxH in Table 1 is 0x1770, maxH >0xFF, byteSTr1 is as in Table 2.
Table 2:
| Y | X | number of heights | Height 1 | Height 2 | Height 3 |
| 0x05 | 0x02 | 0x03 | 0x03 | 0x02 | 0x02 |
| 0x01 | 0x02 | 0x03 | 0x70 | 0xA8 | 0x08 |
| 0x01 | 0x02 | 0x03 | 0x7C | 0xEC | 0x0A |
| 0x01 | 0x02 | 0x03 | 0x03 | 0x02 | 0x02 |
| 0x01 | 0x02 | 0x03 | 0x02 | 0x02 | 0x02 |
| 0x01 | 0x02 | 0x02 | 0x02 | 0x01 |
ByteSTr2 is shown in Table 3.
Table 3:
| Y | X | number of heights | Height 1 | Height 2 |
| 0x06 | 0x02 | 0x02 | 0x17 | 0x16 |
| 0x01 | 0x02 | 0x02 | 0x15 | 0x13 |
Specifically, the preset compressed file structure may be:
characteristic characters: 2 bytes;
sonar ID:2 bytes;
compressed data length: 2 bytes;
CRC check: 2 bytes;
the data content is as follows:
if no relative height change occurs, a "0xFF 0xFF 0xFF 0xFF" terminator indicates;
the low maximum height change relative value DDMaxH (1 byte) +2 bytes bytestr1 length+bytestr1;
the high maximum height change relative value HHMaxH (1 byte) +2 bytes bytestr1 length+bytestr2;
based on a preset description rule, describing the high-order 1-byte data and/or the low-order 1-byte data according to the preset rule to obtain compressed data, and transmitting the compressed data to the server, wherein the compressed data can realize a compression rate of about 50% on the basis of a height value change data string WordStr0.
Preferably, in the case that the maximum value MaxH >255 in the height value change data string, the method further includes:
extracting all points larger than 255 in the height value change data string to be marked as abnormal points;
transmitting the abnormal information corresponding to the abnormal point to a server in a preset time to perform priority analysis processing, wherein the abnormal information at least comprises: abnormal point coordinates, high-order 1 byte data of the abnormal point, and low-order 1 byte data of the abnormal point.
Because the depth of pile foundation flushing directly influences pile foundation safety, and the application requirements of the depth of flushing of the marine pile foundation are combined, the data of the obtained high-level height change relative value data string ByteSTr2, namely the flushing height, are greatly changed, the data can be defined as data with higher transmission priority, once the data appear, the three-dimensional sonar controller can transmit the data back to the server in time in first time, an AI early warning model of a server monitoring system can process the data in first time, early warning suggestions are given, and the response time of the system is greatly improved.
Preferably, the step of acquiring the height value change data string further comprises:
and under the condition that the height value change data string contains data smaller than 0, carrying out preset calibration on all the data smaller than 0, and sending lattice coordinates and data values corresponding to the data smaller than 0 to a server.
In general, the probability of data smaller than 0 in the height value change data string is low, that is, the seabed in the pile foundation target range is high, the rising of the seabed does not affect the safety of the pile foundation in a short period, but after the data are analyzed, a predictive signal may be given to the trend of the seabed change, so that the technical scheme of the invention carries out additional preset calibration on the data so as to facilitate the server to carry out further analysis work.
Based on the same conception, the invention also provides a three-dimensional sonar data compression system of the offshore pile foundation based on edge calculation, which comprises the following steps: the three-dimensional sonar controller is realized by the singlechip with the server, the three-dimensional sonar controller further includes: the acquisition module is used for acquiring the height value data of the target dot matrix at the current moment through the three-dimensional sonar, and calculating the height value data of the target dot matrix based on the height value data of the current moment and the height value data of the preset reference moment to acquire a height value change data string of the target dot matrix, wherein each data in the height value change data string is represented by 2 bytes; the extraction module is used for separating high-level data and low-level data of each data in the height value change data string based on a preset rule so as to extract high-level 1-byte data and/or low-level 1-byte data of each data in the height value change data string; the compression module is used for describing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset rule to obtain compressed data; and the transmission module is used for sending the compressed data to a server for the server to analyze the data.
According to the technical scheme, after the height value data of the target dot matrix preset in the target range is obtained through the three-dimensional sonar, difference operation is carried out on the height value data and the height value data obtained last time to obtain a height value change data string of the target dot matrix, the height value change data string comprises a height change value of each point in the target dot matrix, and if the heights of certain points in two continuous side scanning are not changed, the height change value corresponding to the point is 0. After the altitude change data string is acquired, since each data in the altitude change data string is represented by 2 bytes, but since the scouring of the seabed is generally a very slow process, the altitude of many points in the target lattice will not generally change, that is, there is a large amount of 0 in the acquired altitude change data string. Based on the technical scheme, only the height value change data of the point with the change of the height value is extracted, the data to be transmitted is reduced, and in addition, the height value change data is subjected to high-low separation, namely, if the height value change data only occupies 1 byte at low position, the space of 1 byte can be saved after the high-low separation is carried out, so that the compression rate is further improved.
Based on the same inventive concept, the present invention also provides a computer apparatus comprising: a memory for storing a processing program; and the processor is used for realizing the efficient compression method of the three-dimensional sonar side-scan data of the offshore pile foundation when executing the processing program.
Based on the same inventive concept, the invention also provides a readable storage medium, wherein a processing program is stored on the readable storage medium, and the processing program realizes the efficient compression method of the three-dimensional sonar side-scan data of any one of the offshore pile foundations when being executed by a processor.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read Only Memory (ROM), a magnetic disk or an optical disk, or the like, which can store program codes.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is within the scope of the appended claims and their equivalents to fall within the scope of the invention.
Claims (10)
1. The offshore pile foundation three-dimensional sonar data compression method based on edge calculation is characterized by comprising the following steps of:
acquiring height value data of a target lattice at the current moment through a three-dimensional sonar, and calculating based on the height value data of the current moment and the height value data of a preset reference moment to acquire a height value change data string of the target lattice, wherein each data in the height value change data string is represented by 2 bytes;
performing high-low data separation on each data in the high-value change data string based on a preset rule to extract high-level 1-byte data and/or low-level 1-byte data of each data in the high-value change data string;
describing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset rule to obtain compressed data;
and sending the compressed data to a server for data analysis by the server.
2. The method for compressing three-dimensional sonar data of an offshore pile foundation based on edge calculation according to claim 1, wherein obtaining the height value data of the current moment of the target lattice through three-dimensional sonar further comprises:
dot matrix encoding is carried out on the target range based on a preset resolution;
and controlling the three-dimensional sonar to laterally sweep each point in the target lattice based on the lattice codes so as to acquire the height of each point.
3. The method for three-dimensional sonar data compression of offshore pile foundation based on edge calculation according to claim 2, wherein calculating based on the height value data at the current time and the height value data at the preset reference time to obtain the height value change data string of the target lattice further comprises:
taking the height value data at the previous moment as the height value data at the preset reference moment, and performing difference operation on the height value data at the current moment and the height value data at the preset reference moment to obtain a height value change data string of the target dot matrix.
4. The offshore pile foundation three-dimensional sonar data compression method based on edge calculation according to claim 1, wherein the high-low bit data separation of each data in the high value change data string based on a preset rule further comprises:
extracting high-order 1-byte data and low-order 1-byte data of each data in the height value change data string respectively under the condition that the maximum value MaxH in the height value change data string is more than 255;
extracting low-order 1-byte data of each data in the height value change data string under the condition that the maximum value MaxH in the height value change data string is more than 0 and less than or equal to 255;
and storing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset.
5. The method for three-dimensional sonar data compression of offshore pile foundation based on edge calculation according to claim 4, wherein describing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset rule to obtain compressed data further comprises:
the preset rule is as follows:
y, X, height number n, height value 1, height value 2.
Δy, X, height number n, height value 1, height value 2.
Wherein Y represents the number of rows of each height value change data, X represents the number of columns of each height value change data, n represents the number of points where the height change occurs, and the height value n represents the high-order 1-byte data or the low-order 1-byte data of a specific value of the height change.
6. The method for three-dimensional sonar data compression of offshore pile foundation based on edge calculation according to claim 5, wherein in case that maximum value MaxH >255 in the height value variation data string, the method further comprises:
extracting all points larger than 255 in the height value change data string to be marked as abnormal points;
transmitting the abnormal information corresponding to the abnormal point to a server in a preset time to perform priority analysis processing, wherein the abnormal information at least comprises: abnormal point coordinates, high-order 1 byte data of the abnormal point, and low-order 1 byte data of the abnormal point.
7. The method for three-dimensional sonar data compression of offshore pile foundation based on edge calculation according to claim 1, wherein after obtaining the height value change data string, further comprises:
and under the condition that the height value change data string contains data smaller than 0, carrying out preset calibration on all the data smaller than 0, and sending lattice coordinates and data values corresponding to the data smaller than 0 to a server.
8. An offshore pile foundation three-dimensional sonar data compression system based on edge calculation, which is characterized by comprising: the three-dimensional sonar controller is realized by the singlechip with the server, the three-dimensional sonar controller further includes:
the acquisition module is used for acquiring the height value data of the target dot matrix at the current moment through the three-dimensional sonar, and calculating the height value data of the target dot matrix based on the height value data of the current moment and the height value data of the preset reference moment to acquire a height value change data string of the target dot matrix, wherein each data in the height value change data string is represented by 2 bytes;
the extraction module is used for separating high-level data and low-level data of each data in the height value change data string based on a preset rule so as to extract high-level 1-byte data and/or low-level 1-byte data of each data in the height value change data string;
the compression module is used for describing the extracted high-order 1-byte data and/or low-order 1-byte data according to a preset rule to obtain compressed data;
and the transmission module is used for sending the compressed data to a server for the server to analyze the data.
9. A computer device, comprising:
a memory for storing a processing program;
a processor, which when executing the processing program, implements the offshore pile foundation three-dimensional sonar data compression method based on edge calculation as defined in any one of claims 1 to 7.
10. A readable storage medium, wherein a processing program is stored on the readable storage medium, and when the processing program is executed by a processor, the method for compressing three-dimensional sonar data of an offshore pile foundation based on edge calculation as set forth in any one of claims 1 to 7 is implemented.
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