[Case Study] 3D Laser Scanning of Cultural Heritage Measurement at Fukuoka Castle Ruins

It is possible to measure from a distance without the risk of damage to the object due to contact, allowing for high-precision measurements in a short time.

【Example】 Location: Fukuoka Castle Ruins Area: Approximately 700 square meters Number of Measurements: 35 locations Measurement Time: Approximately 3 hours and 30 minutes Measurement Data Confirmation: Approximately 1 hour (Total: Approximately 4 hours and 30 minutes) 【Measurement Conditions】 ■ Measurements can be conducted outdoors and indoors ■ Due to equipment specifications, the ideal temperature during measurements is between 5°C and 40°C ■ Measurements can be taken at night or in dark places, but obtaining color information is difficult ■ Outdoor measurements may be impossible depending on weather conditions due to laser reflection and refraction from rain or fog ■ Glossy surfaces that reflect lasers or black objects that absorb lasers will reduce point cloud acquisition rates ※ Mirrors and glass typically cannot obtain point clouds ■ Moving objects during measurement will be processed as noise during data processing ※ For accuracy in point cloud acquisition, it is preferable to measure during times when there are no people present ■ Generally, measurements are taken from below, so point clouds of the top surfaces of objects cannot be obtained. If point cloud acquisition is necessary, measurements should be taken from a height 【Examples of Point Cloud Data Utilization】 ■ Dimension measurement ■ Cross-section display ■ Height display ■ Intensity display ■ 3D modeling ■ VR, etc.

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