三相位环绕视频匀分帧建模技术在文物逆向三维模型重建中的应用

Three-phase surround video equal-frame modeling technique in reconstruction of cultural relic reverse 3D model

目前文物保护工作中运用较多的是通过多角度多摄站摄影的方式进行数据采集用于逆向建模,但该方式所用时间较长、工作量较大,且经验要求较高,容易因数据采集不当造成后期三维模型出现纹理模糊、模型空洞、分层等情况,需要对被测文物进行二次采集。针对以上问题提出了一种三相位环绕采集技术对被测文物进行视频录制,并对视频匀分帧处理,将分帧图像用于建模。以广西桂林靖江王陵麒麟像为对象,论证三相位环绕视频匀分帧建模技术的优越性。结果表明,运用该技术所建三维模型精度较好,符合文物建模要求,采集时间减少50%左右,操作简单且不易造成二次采集,在文物保护方面具有广泛应用前景。

At present,the most commonly used method in cultural relics protection is to collect data through multi-angle and multi-camera photography for reverse modeling.It takes a long time,requires a large amount of work,and requires high experience.Improper collection results in fuzzy texture,model voids,and layering in the later 3D model require secondary collection of the measured cultural relics.A three-phase surround acquisition technology is proposed in this paper to record the video of the measured cultural relic,by processing the video evenly into frames.The framed images are used for modeling.The Kylin statue of Jingjiang King􀆳s Mausoleum in Guilin is taken as the experimental object to demonstrate the superiority of the three-phase surround video uniform frame modeling technology.The results show that the accuracy of 3D model built with this technology is slightly better,which meets the accuracy requirements of cultural relic modeling,the collection time is reduced about 50%.The operation is simple and without much secondary collection.It has broad application prospects in cultural relics protection.