KR-20260066615-A - Cultural Heritage Monitoring System

KR20260066615AKR 20260066615 AKR20260066615 AKR 20260066615AKR-20260066615-A

Abstract

A national heritage monitoring system is provided. A national heritage monitoring system according to an embodiment of the present invention comprises a shooting unit, a storage unit, an analysis unit, and an output unit, wherein the national heritage monitoring system automatically determines whether there is a change in national heritage. The shooting unit comprises a digital camera and a stepper motor-based automatic rotation mount that automatically rotates the digital camera in a horizontal direction, a control device that controls the operation of the digital camera and the automatic rotation mount, and a housing that accommodates the components internally and protects them from the external environment. The control device sets and controls the shooting schedule, shooting interval, number of shots, rotation angle, overlapping area range, shutter operation time, preparation time, initial position return condition, mount rotation time, housing opening/closing time, and whether to compress and transmit data. The control value is linked to the rotation control value of the mount. The system includes a data transmission module that automatically compresses the captured image after shooting is completed and transmits it to the storage unit. The control device sets control conditions according to an interval shooting method and performs housing opening, shutter operation, rotation, and return control. The analysis unit corrects the phase difference of the image to extract feature points and removes errors in the extracted feature points.

Inventors

김형준
하태욱
신은미
김원종
지성진

Assignees

대한민국(국가유산청 국립문화유산연구원장)

Dates

Publication Date: 20260512
Application Date: 20250827

Claims (3)

In a national heritage monitoring system that automatically determines whether there is a change in national heritage, including a shooting unit, a storage unit, an analysis unit, and an output unit, The above-mentioned shooting unit comprises a digital camera and a stepper motor-based automatic rotation mount that automatically rotates the digital camera in a horizontal direction, and A control device for controlling the operation of the digital camera and the automatic rotation mount, and It includes a housing that accommodates the above components internally and protects them from the external environment, The above control device is Setting and controlling the shooting schedule, shooting interval, number of shots, rotation angle, overlap area range, shutter operation timing, preparation time, initial position return condition, mount rotation timing, enclosure opening/closing timing, and whether to compress and transmit data of the above digital camera, and The above control value is linked to the rotation control value of the mount, and It includes a data transmission module that automatically compresses the captured image after shooting is completed and transmits it to the storage unit, and The above control device sets control conditions according to the interval shooting method and performs enclosure opening, shutter operation, rotation, and return control. The above analysis unit is, A national heritage monitoring system characterized by correcting the phase difference of the above image to extract feature points and removing errors from the extracted feature points.
In paragraph 1, The above output unit is, It includes a setting box configured to detect feature points and identify differences in the image to be analyzed, The above setting box is, Set the threshold of feature points and set the detection threshold, A matching threshold is set to determine the matching distance between feature points, and A national heritage monitoring system characterized by setting a change area area value by selecting areas smaller than a pre-set value within the change area.
In paragraph 1, The above output unit Implement the analysis results as a graph of the count by date and output it as a histogram, The above histogram is The horizontal axis represents the date point, and the vertical axis represents the number of detected feature points, A national heritage monitoring system characterized by being configured to display the number of consecutively captured images during a single shot.

Description

Cultural Heritage Monitoring System The present invention relates to a national heritage monitoring system, and more specifically, to a national heritage monitoring system for the continuous observation of large-scale and difficult-to-access national heritage. National heritage is constantly changing over time, and for its long-term preservation and maintenance, it is necessary to periodically monitor and continuously track and observe the patterns of change. Monitoring of national heritage is carried out through various methods, and among them, the external survey, which primarily examines whether there are external changes to the heritage, is the foundation of monitoring. For some national heritage sites, it may be difficult to access the areas under investigation due to site conditions, which can make it challenging to collect photographic or video data for on-site external inspections. In addition, depending on the importance of the national heritage, there are cases where continuous monitoring is required. When the above situations occur in combination, there are cases where continuous monitoring with short monitoring cycles is necessary for national heritage sites that are difficult to access closely. In the case of prehistoric rock art, which is the subject of monitoring in this invention, weathering caused by flooding and other factors is accelerated due to exposure to the external environment, and consequently, there is a constant risk of damage, such as the detachment of major parts. Therefore, prehistoric rock art must be monitored continuously, with a shorter monitoring cycle than that of other national heritage sites. However, in the case of the aforementioned petroglyphs, there is a stream in front of the site, and even a slight rise in the water level makes it impossible to access on foot for the purposes of observation, investigation, or photography. Due to the circumstances described above, it is not possible to regularly conduct close-up photography and investigations to verify the condition of the aforementioned petroglyphs, despite concerns regarding continuous damage. In addition, the above petroglyph is very large, with a size of approximately 60㎡ or more including the surrounding area, and the photographic data of the entire area for analysis must satisfy a certain level of resolution. As photographic data for a survey of this scale accumulates, the time required for visual comparison analysis increases exponentially, raising concerns that the quality of the analysis results may deteriorate. In addition, conventional methods have been based on visual inspection of captured images. However, when the scale of the national heritage subject to analysis is very large, the time required to analyze the captured images is very long, and there is a problem that the time required increases exponentially as the number of images increases. Furthermore, the precision of the results from visual inspection depends on the analyst's proficiency, which presents a problem where results vary depending on who the analyst is. FIG. 1 is an overall conceptual diagram of a national heritage monitoring system according to an embodiment of the present invention, FIG. 2 is a conceptual diagram showing the shooting process of the shooting unit (100) of a national heritage monitoring system according to an embodiment of the present invention. FIG. 3 is a photograph showing the installation state of the camera unit of a national heritage monitoring system according to an embodiment of the present invention. FIG. 4 is a full-screen photograph of the output unit (300) of the national heritage monitoring system according to an embodiment of the present invention. FIG. 5 is a histogram output from the output unit (300) of the national heritage monitoring system according to an embodiment of the present invention. The following detailed description of the invention refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that various embodiments of the invention are different but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in relation to one embodiment. It should also be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the following detailed description is not intended to be limiting, and the scope of the invention is limited only by the appended claims, including all equivalents to those claimed therein, provided appropriately described. Similar reference numerals in the drawings refer to the same or similar functions a