CN113220910A - Method and system for constructing ship deck cable database - Google Patents

Method and system for constructing ship deck cable database Download PDF

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Publication number
CN113220910A
CN113220910A CN202110552915.3A CN202110552915A CN113220910A CN 113220910 A CN113220910 A CN 113220910A CN 202110552915 A CN202110552915 A CN 202110552915A CN 113220910 A CN113220910 A CN 113220910A
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database
image
unsafe
information
frame image
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CN113220910B (en
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章文俊
赵常九
马双福
岳敬文
吕红光
王庆武
杨雪
孟祥坤
周翔宇
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Dalian Maritime University
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Dalian Maritime University
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G06F16/41Indexing; Data structures therefor; Storage structures
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G06F16/43Querying
    • G06F16/432Query formulation
    • G06F16/434Query formulation using image data, e.g. images, photos, pictures taken by a user
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G06F16/43Querying
    • G06F16/438Presentation of query results
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G06F16/44Browsing; Visualisation therefor
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06NCOMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N3/00Computing arrangements based on biological models
    • G06N3/02Neural networks
    • G06N3/04Architecture, e.g. interconnection topology
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

The invention provides a method and a system for constructing a ship deck cable database, wherein the method comprises the steps of obtaining video data of unsafe behaviors; preprocessing video data; screening the preprocessed data; labeling the screened images by using labelimg; and storing the basic information of the marked unsafe behavior database image into a picture data table to form a deck cable unsafe behavior database. According to the invention, by collecting an image database of unsafe behaviors of crews, the unsafe behavior characteristics of each database image are extracted, and the database image characteristics and the unsafe behavior indexes are stored in an image characteristic table; and unsafe behavior monitoring is carried out on the crew operating the deck cable through algorithms such as deep learning and neural network, and the crew can obtain early warning through bracelet vibration based on the support of project of 'crew unsafe behavior and state monitoring early warning platform'.

Description

Method and system for constructing ship deck cable database
Technical Field
The invention relates to the technical field of intersection of the ship field and the computer field, in particular to a method and a system for constructing a ship deck cable database.
Background
The monitoring of the unsafe behaviors of the deck cable of the crew is a crucial step in a crew behavior monitoring system, and with the wide application of video monitoring technology in the field of ships, the unsafe behaviors of crew cable operation are gradually changed into video intelligent monitoring from monitoring dominated by personnel and experience, and the video intelligent monitoring is gradually approved by the crew and on-road supervision personnel in the ship operation.
However, the video monitoring of unsafe behaviors of crews in the field of ships is not widely researched and applied at present, and has the following three main difficulties:
1. object tracking management is difficult. The work of a crew is international work, generally, ocean vessels sail in a global range, the research is relatively difficult, and the crew cannot be conveniently tracked and managed in fixed places such as mines, railway stations and the like.
2. Real-time contact is difficult. Signals on ships in the ocean cannot be kept good as on land, so that timely contact cannot be achieved, and timely communication cannot be achieved as on shore.
3. Since the ship has characteristics that the ship does not have on land such as rolling and pitching, and the video image is unstable in the video acquisition process, the on land data set manufacturing method cannot be completely applied.
Thanks to the rapid development of the video monitoring technology, intelligent, convenient and efficient identification can be realized in the field of land. However, due to the particularity of working environment and working property on the ship, the method cannot be directly applied to a monitoring system on the road, so that independent research and development and establishment of a set of monitoring and early warning platform for examining unsafe behaviors and states of crews on the ship are of extra importance. In the process of establishing video monitoring, the only step requiring more human participation is to establish a complete data set of unsafe behaviors, and a set of data sets integrating all unsafe behaviors can be accurately identified and timely reminded in the future identification process. At present, data set manufacturing does not design unsafe behaviors in software according to the blank, but collects a series of unsafe behaviors when crews actually work, cuts videos into pictures, and forms a data set through processing such as screening and labeling. For example, the data sets of unsafe behaviors exist in mines and construction sites, and are provided for monitors, so that the quality of the data sets is particularly important for monitoring the unsafe behaviors, and the final monitoring and early warning are directly influenced by the database of the unsafe behaviors.
However, unsafe behaviors in professional data sets of mines and construction sites are more professional, classification for navigation is less, and due to lack of navigation experience of data set makers, unsafe behaviors which are easy to occur at sea are not known, so that practical application to the navigation field is difficult. Moreover, because the ship has the characteristics of rolling and pitching, the method for manufacturing the onshore data set is completely suitable for the ship, so that a database for unsafe operation of the deck cable, which is suitable for the navigation field and can accurately identify and early warn, is very necessary.
Disclosure of Invention
In view of the above-mentioned technical problems, a method and a system for constructing a ship deck cable database are provided. According to the invention, by collecting an image database of unsafe behaviors of crews, the unsafe behavior characteristics of each database image are extracted, and the database image characteristics and the unsafe behavior indexes are stored in an image characteristic table; and unsafe behavior monitoring is carried out on the crew operating the deck cable through algorithms such as deep learning and neural network, and the crew can obtain early warning through bracelet vibration based on the support of the crew unsafe behavior and state monitoring early warning platform item.
The technical means adopted by the invention are as follows:
a method for constructing a ship deck cable database comprises the following steps:
acquiring video data of unsafe behaviors;
preprocessing the acquired video data;
screening the preprocessed data;
labeling the screened images by using labelimg;
and storing the basic information of the marked unsafe behavior database image into a picture data table to form a ship deck cable database.
Further, the acquiring video data of unsafe behaviors includes:
extracting unsafe behaviors of the crew as first information by combining shipping company system files and IMO rules;
counting and tidying unsafe behaviors of the ship deck cable operation as second information;
analyzing the correlation between the first information and the second information, and integrating the information to obtain third information;
and converting the third information into actual operation through wheel climbing actual operation, and recording the actual operation in a video mode.
Further, the preprocessing the acquired video data includes:
and cutting the recorded video data into one image by cutting each frame of image, wherein the image resolution is 1920 x 1080.
Further, the screening the preprocessed data includes:
subtracting the N frame image from the N +1 frame image, subtracting the N +1 frame image from the N frame image, and adding the two subtracted images to obtain a target area;
subtracting the N frame image from the N +2 frame image, subtracting the N +2 frame image from the N frame image, and adding the two subtracted images to obtain a new target area;
subtracting the N frame image from the N + N frame image, subtracting the N + N frame image from the N frame image, and adding the two subtracted images to obtain a final target area;
and setting a threshold value after repeating the operation, continuously repeating the steps from the N + N frame, retaining the image after reaching the threshold value, and continuously repeating the operation to obtain all screened images.
Further, the marked basic information of the unsafe behavior database image is stored in a picture data table to form a ship deck cable database, wherein the picture data table comprises picture ground information of pictures, picture warehousing time information and unsafe behavior information contained in the pictures.
The invention also provides a ship deck cable database construction system based on the construction method, which comprises the following steps:
the data acquiring module is used for acquiring video data of unsafe behaviors;
the preprocessing module is used for preprocessing the acquired video data;
the data screening module is used for screening the preprocessed data;
the image marking module is used for marking the screened images by using labelimg;
and the picture basic information storage module is used for storing the marked basic information of the unsafe behavior database image into a picture data table to form a ship deck cable database.
Further, the picture data table includes picture location information, picture warehousing time information, and unsafe behavior information included in the picture.
A computer-readable storage medium having a set of computer instructions stored therein; the computer instruction set, when executed by a processor, implements the method of constructing a ship deck cable database described above.
Compared with the prior art, the invention has the following advantages:
1. according to the method and the system for constructing the ship deck cable database, the unsafe behavior characteristics of each database picture are extracted by collecting the image database of unsafe behaviors of crews, and the database picture characteristics and the unsafe behavior indexes are stored in the picture characteristic table; the unsafe behavior of the crew operating the deck cable is monitored through algorithms such as deep learning and neural network, and the crew can obtain early warning through bracelet vibration based on the support of the unsafe behavior of the crew and the condition monitoring and early warning platform item.
2. The method and the system for constructing the ship deck cable database solve the problem that monitoring and early warning of unsafe behaviors of deck crew cable operation cannot be realized in the prior art, and further cannot ensure the safety of the crew cable operation. Meanwhile, the database can be used for development and verification of various algorithms, and plays a critical role in promoting development of marine video monitoring of ships.
3. The method and the system for constructing the ship deck cable database provide a basis for video monitoring of unsafe behaviors of crews, and reduce casualties on a ship deck caused by the unsafe behaviors of operating cables.
For the above reasons, the present invention can be widely applied to the fields such as the intersection of the ship field and the computer field.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, the present invention provides a method for constructing a ship deck cable database, comprising the following steps:
s1, acquiring video data of unsafe behaviors;
in specific implementation, as a preferred embodiment of the present invention, the acquiring video data of unsafe behaviors includes:
extracting unsafe behaviors of the crew as first information by combining shipping company system files and IMO rules;
counting and tidying unsafe behaviors of the ship deck cable operation as second information;
analyzing the correlation between the first information and the second information, and integrating the information to obtain third information;
and converting the third information into actual operation through wheel climbing actual operation, and recording the actual operation in a video mode.
S2, preprocessing the acquired video data;
in specific implementation, as a preferred embodiment of the present invention, the preprocessing the acquired video data includes:
and cutting the recorded video data into one image by cutting each frame of image, wherein the image resolution is 1920 x 1080.
S3, screening the preprocessed data; video files captured by the camera are decomposed into images, about ten thousand pictures exist, but most of the pictures are not meaningful for marking, and a large amount of time is consumed for manually removing the pictures, so that the screening method of the unsafe behavior pictures based on the ship deck environment is provided in the embodiment.
In specific implementation, as a preferred embodiment of the present invention, the screening the preprocessed data includes:
subtracting the N frame image from the N +1 frame image, subtracting the N +1 frame image from the N frame image, and adding the two subtracted images to obtain a target area; the purpose of this process is to increase the contrast of the target area.
However, the two subtracted images may not extract the required feature target for the operation of the ship deck, so it is also necessary to subtract the N frame image from the N +2 frame image, subtract the N +2 frame image from the N frame image, and add the two subtracted images to obtain a new target area;
subtracting the N frame image from the N + N frame image, subtracting the N + N frame image from the N frame image, and adding the two subtracted images to obtain a final target area;
and setting a threshold value after repeating the operation, continuously repeating the steps from the N + N frame, retaining the image after reaching the threshold value, and continuously repeating the operation to obtain all screened images.
S4, labeling the screened image by labellimg;
and storing the basic information of the marked unsafe behavior database image into a picture data table to form a ship deck cable database.
In specific implementation, as a preferred implementation of the present invention, the basic information of the marked image of the unsafe behavior database is stored in a picture data table to form a ship deck cable database, where the picture data table includes picture location information of a picture, picture warehousing time information, and unsafe behavior information included in the picture.
Corresponding to the construction method of the ship deck cable database in the application, the application also provides a ship deck cable database construction system, which comprises the following steps: the system comprises an unsafe behavior data acquisition module, a preprocessing module, a data screening module, an image labeling module and a picture basic information storage module, wherein:
the data acquiring module is used for acquiring video data of unsafe behaviors;
the preprocessing module is used for preprocessing the acquired video data;
the data screening module is used for screening the preprocessed data;
the image marking module is used for marking the screened images by using labelimg;
and the picture basic information storage module is used for storing the marked basic information of the unsafe behavior database image into a picture data table to form a ship deck cable database.
For the embodiments of the present invention, the description is simple because it corresponds to the above embodiments, and for the related similarities, please refer to the description in the above embodiments, and the detailed description is omitted here.
Example (b):
in the embodiment, firstly, the system files and the IMO regulations of each large shipping company are collected, the unsafe behavior specifications are extracted and integrated, and the formation of the database needs to follow the requirement of integrity, so that the official requirement specifications are collected firstly in the invention for the generation of the database.
In order to cover the data into the unsafe behavior database of the crew, a combined method of questionnaires and video monitoring analysis is firstly adopted to collect unsafe behavior information data, on one hand, the unsafe behavior is collected in the mode of questionnaires by experienced sailors, on the other hand, a large number of videos of deck operation are recorded by videos and analyzed, and the unsafe behavior to be avoided is obtained. Secondly, performing correlation analysis according to unsafe behaviors obtained by system files, various regulations and actual working experience. The practical experience is different from various regulations and the emphasis of files, the system files and the regulations are more from the perspective of protecting the normal operation of the ship, and the actual working experience is more focused on protecting the safety of the ship, so that the two materials are subjected to correlation analysis to obtain a complete unsafe behavior database.
After the acquisition of the database of unsafe behaviors of the crew is finished, video sampling is needed, and specific unsafe behavior operation is obtained for further identification. The actual conditions of cable winding and unwinding, cable crane usage and deck daily maintenance are shot on a real ship, and a sailor is required to make protective measures to actually demonstrate unsafe behaviors in the unsafe behavior database under the condition of ensuring safety. Specifically, video data is decomposed into an original picture data set after being acquired, and subjected to image processing such as graying, median filtering, and the like. And then subtracting, adding and iterating the images, and obtaining a proper threshold value through an experiment of two hundred pictures. And finally, further iteration is carried out, and all pictures needing to be marked are screened out. And after the picture data set needing to be labeled is obtained, using labellimg to perform frame processing on specific actions needing to be identified in the image, and labeling the actions of unsafe behaviors, wherein the labeling names are in accordance with data in a shipman unsafe behavior database.
Finally, storing the basic information of the marked pictures in the unsafe behavior database into a picture data table, wherein the information in the picture data table comprises the picture places of the pictures, the picture warehousing time and the unsafe behaviors contained in the pictures; wherein the marked unsafe behavior is an identification of the database picture.
The data set can be used in an early warning platform for unsafe behaviors and states of crews, particularly applied to semi-outdoor cameras, and five cameras can be used as a training set to perform behavior recognition according to the specification of the application of the early warning platform for unsafe behaviors and states of crews in inland cruise ships. Specifically, the method comprises the following steps:
the middle part of the stern part of the upper deck and the roofs of the port and the starboard are respectively 1, and the roofs of the port and the starboard are respectively 1 outside the cab door of the driving deck.
The application is as follows: a video camera is arranged on a ceiling of a midship of the upper deck stern winch to acquire behaviors of operators at the stern winch and the mooring cable;
the data set is used as the basis of detecting the unsafe behaviors of deck cable operation, and provides comprehensive, timely and effective big data support for ship safety management by monitoring the unsafe behaviors and states of crews, analyzing by adopting special software and giving early warning. And the safe navigation management level of the ship is improved. And then the system outputs network signals to a 4G network switch configured on the ship, so that information sharing of ship-shore (shipping companies and school laboratories) is realized.
The embodiment of the application also discloses a computer-readable storage medium, wherein a computer instruction set is stored in the computer-readable storage medium, and when the computer instruction set is executed by a processor, the method for constructing the ship deck cable database provided by any one of the above embodiments is realized.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. A method for constructing a ship deck cable database is characterized by comprising the following steps:
acquiring video data of unsafe behaviors;
preprocessing the acquired video data;
screening the preprocessed data;
labeling the screened images by using labelimg;
and storing the basic information of the marked unsafe behavior database image into a picture data table to form a ship deck cable database.
2. The method of constructing a ship deck line database according to claim 1, wherein said obtaining video data of unsafe behavior comprises:
extracting unsafe behaviors of the crew as first information by combining shipping company system files and IMO rules;
counting and tidying unsafe behaviors of the ship deck cable operation as second information;
analyzing the correlation between the first information and the second information, and integrating the information to obtain third information;
and converting the third information into actual operation through wheel climbing actual operation, and recording the actual operation in a video mode.
3. The method of constructing a ship deck cable database according to claim 1, wherein the preprocessing the acquired video data comprises:
and cutting the recorded video data into one image by cutting each frame of image, wherein the image resolution is 1920 x 1080.
4. The method of constructing a ship deck cable database according to claim 1, wherein the screening the preprocessed data comprises:
subtracting the N frame image from the N +1 frame image, subtracting the N +1 frame image from the N frame image, and adding the two subtracted images to obtain a target area;
subtracting the N frame image from the N +2 frame image, subtracting the N +2 frame image from the N frame image, and adding the two subtracted images to obtain a new target area;
subtracting the N frame image from the N + N frame image, subtracting the N + N frame image from the N frame image, and adding the two subtracted images to obtain a final target area;
and setting a threshold value after repeating the operation, continuously repeating the steps from the N + N frame, retaining the image after reaching the threshold value, and continuously repeating the operation to obtain all screened images.
5. The method for constructing a ship deck cable database according to claim 1, wherein the marked basic information of the unsafe behavior database image is stored in a picture data table to form a ship deck cable database, wherein the picture data table comprises picture location information of pictures, picture warehousing time information and unsafe behavior information contained in the pictures.
6. A ship deck cable database building system based on the building method according to any one of claims 1 to 5, comprising:
the data acquiring module is used for acquiring video data of unsafe behaviors;
the preprocessing module is used for preprocessing the acquired video data;
the data screening module is used for screening the preprocessed data;
the image marking module is used for marking the screened images by using labelimg;
and the picture basic information storage module is used for storing the marked basic information of the unsafe behavior database image into a picture data table to form a ship deck cable database.
7. The vessel deck line database building system according to claim 6, wherein the picture data table includes picture-place information of pictures, picture warehousing time information, unsafe behavior information contained in pictures.
8. A computer-readable storage medium having a set of computer instructions stored therein; the set of computer instructions, when executed by a processor, implement a method of constructing a vessel deck line database according to any of claims 1 to 5.
CN202110552915.3A 2021-05-20 2021-05-20 Construction method and system of ship deck cable database Active CN113220910B (en)

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