KR-20260066356-A - Method And Device For Identifying Forgery And Tampering Of Ship CCTV Footage

Abstract

The present invention relates to a method and apparatus for identifying forgery of ship CCTV footage, which can identify forgery of ship CCTV footage by issuing an NFT to image information to identify forgery of ship CCTV footage, querying the NFT information together when viewing digital footage, verifying whether the metadata of the footage recorded in the NFT matches the metadata of the digital footage being viewed, and providing the verification result together with the footage to the viewer.

Inventors

• 권현모
• 양우영
• 조용현

Assignees

• 한화오션 주식회사
• 주식회사 싸이터

Dates

Publication Date

20260512

Application Date

20241104

Claims (11)

1. A shooting step of capturing CCTV footage of a vessel through a CCTV device positioned at key devices or locations inside or outside the vessel to capture video; A storage step for storing video and video information captured through the above shooting step on a server; A video data generation step that generates video data by extracting key information of the video stored in the above storage step from the CCTV system, issuing an NFT, and recording it in a blockchain system; and It includes a verification step that verifies the image data generated through the above image data generation step and the NFT data by comparing them in a CCTV system; A method for identifying falsification of ship CCTV footage, capable of identifying falsification of ship CCTV footage through the above verification step.
2. In claim 1, The above image data generation step is, A query step for querying video information stored on a server; An extraction step for extracting key information from the above-mentioned image information; An NFT issuance step for issuing an NFT for key information extracted through the above extraction step; A recording step for recording the blockchain in a blockchain system for the NFT issued through the above NFT issuance step; and A method for identifying forgery of ship CCTV footage, comprising a storage step of storing an NFT ID for a blockchain recorded through the above-mentioned recording step on a server to generate video data.
3. In claim 2, The key information extracted through the above extraction step is, A method for identifying falsification of ship CCTV footage, comprising at least one of the following: a ship identification number (IMO Number), a marine mobile service identification number (MMSI Number), a ship name, a GPS location where the CCTV was captured, depth, weather, ship speed, a CCTV system identification value, a time of creation, CCTV device information, a recording resolution, and a stored file path.
4. In claim 2, The above storage step is, A method for identifying forgery or alteration of ship CCTV footage, wherein when saving a video file captured by a CCTV, NFT information issued from the video is also saved.
5. In claim 4, The above NFT information is, A method for identifying falsification of ship CCTV images, comprising at least one of issue date information, CCTV system information, CCTV device information, playback length information, video hash information, storage path information, and resolution information.
6. In claim 1, The above video information is, A method for identifying falsification of ship CCTV images, comprising at least one of creation date information, CCTV system information, CCTV device information, playback length information, video hash information, storage path information, and resolution information.
7. In claim 1, The above verification step is a method for identifying forgery of ship CCTV footage, wherein the verification step compares image information and NFT information to check for originality and discrepancies, and if discrepancies exist, determines that it is forgery and detects forgery.
8. In claim 1, The above verification step is, Video search step for searching for desired videos on the server; An extraction step for extracting image information corresponding to the image searched through the above image search step from digital image data; A lookup step for querying an NFT corresponding to the video searched in the above video search step in a blockchain system; A comparison step for comparing image information extracted in the extraction step above with image information within the NFT retrieved in the query step above; and A method for identifying tampering in ship CCTV footage, comprising a detection step for determining data integrity through the above comparison step and detecting tampering if tampered data is present.
9. In claim 1, A method for identifying falsification of a ship CCTV video, further comprising a falsification identification indication step that identifies falsification of the ship CCTV video to a viewer who requests to view the video after the above verification step, and outputs whether the falsification has occurred along with the video information.
10. CCTV devices deployed at key locations or sites inside or outside the vessel to capture video; A server that stores video and video information captured through the above-mentioned CCTV device; A CCTV system that extracts key information from video information stored on the above server to generate digital video data and issues an NFT for the digital video data; and A blockchain system that leaves a blockchain record for NFTs issued by the above-mentioned CCTV system, comprising: When a video is searched through the above server, video information regarding the video searched from the CCTV system is extracted, and the NFT for the extracted video information is retrieved from the blockchain system; A device for identifying forgery of ship CCTV footage, which detects forgery by comparing video information within an NFT retrieved from the blockchain system with video information extracted from the CCTV system.
11. In claim 10, The above CCTV system is a device for identifying falsification of ship CCTV footage, which identifies falsification of ship CCTV footage to a viewer who has requested to view the footage and outputs whether or not there is falsification along with the footage information.

Description

Method and Device for Identifying Forgery and Tampering of Ship CCTV Footage The present invention relates to a method and apparatus for identifying forgery of ship CCTV images, and more specifically, to a method and apparatus for identifying forgery of ship CCTV images that can identify forgery by issuing an NFT to image information. The CCTV system is deployed at key devices or locations inside and outside the vessel to monitor video in real time, and is connected to the central CCTV system via a wire to store the captured video as digital data. Digital image files are divided according to established rules (capacity or time) and are stored and managed in storage in a time-based directory structure to facilitate searching. In addition, digital images are stored by encrypting the data before storage. Therefore, there is no means or data to verify whether the creation time of the video file information (the video creation time recorded in the filename or database) exactly matches. In other words, there was a problem in that it was difficult to identify forgery because there was no means to verify whether the video data generated by the operating CCTV system was authentic, and even if the data was encrypted, there was a possibility that it could be replaced with a file recorded using the same algorithm and encryption key. FIG. 1 is a block diagram showing the configuration of a ship CCTV image forgery identification device according to the present invention. FIG. 2 is a flowchart showing the flow of a method for identifying forgery of ship CCTV images according to the present invention. FIG. 3 is a diagram showing the image data generation step in a method for identifying falsification of ship CCTV images according to an embodiment of the present invention. FIG. 4 is a diagram showing the image data verification step in a method for identifying falsification of ship CCTV images according to an embodiment of the present invention. FIG. 5 is a diagram showing that information comparison is performed in the image data verification step of a method for identifying falsification of ship CCTV images according to an embodiment of the present invention. FIGS. 6 and 7 are diagrams illustrating the information comparison and falsification detection process in the image data verification step of a method for identifying falsification of ship CCTV images according to an embodiment of the present invention. Detailed information regarding the purpose, technical configuration, and the resulting operation and effects of the present invention will be more clearly understood through the detailed description based on the drawings attached to the specification of the present invention. The terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. For example, terms such as "composed of" or "comprising" used in this specification should not be interpreted as necessarily including all of the various components or steps described in the invention, but should be interpreted as excluding some of the components or steps, or potentially including additional components or steps. Furthermore, singular expressions used in this specification include plural expressions unless the context clearly indicates otherwise. The present invention will be described in detail below by explaining preferred embodiments with reference to the attached drawings. The embodiments described below are provided to enable those skilled in the art to easily understand the technical concept of the present invention, and should not be interpreted as limiting the present invention; it is obvious to those skilled in the art that the embodiments of the present invention can have various applications. With reference to FIGS. 1 to 7, we will examine the device and method for identifying forgery and alteration of ship CCTV images according to the present invention. As illustrated in FIG. 1, the device for identifying falsification of ship CCTV footage includes a CCTV device (10) that is positioned at a major device or location inside or outside the ship to capture images, a server (50) that stores images and video information captured through the CCTV device (10), a CCTV system (100) that extracts key information from the video information stored in the server (50) to generate digital video data (110) and issues an NFT (Non-Fungible Token, 120) for the digital video data (110), and a blockchain system (150) that leaves a blockchain record for the NFT (120) issued by the CCTV system (100). Additionally, the CCTV system (100) generates video data by storing a unique ID (Identifier) for the NFT (120) in the server (50). Accordingly, when a video is searched through the server (50), video information for the video searched from the CCTV system (100) is extracted, an NFT for the extracted video information is searched in the blockchain system (150), video information within the NFT searched in the blockchai