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布达拉宫高精度数字化测绘即将完成
2017-08-19 03:11:29 中国青年网
本报拉萨8月18日电(记者尕玛多吉)运用现代三维激光扫描等技术对布达拉宫进行精准测绘即将完成。据布达拉宫管理处介绍,《万尺布宫毫厘探微——精细化测绘在布达拉宫保护中的应用》初期成果,日前亮相2017(上海)国际建筑遗产保护与修复博览会,得到了建筑遗产保护同行的高度关注。
投资400万元的布达拉宫高精度数字化测绘自2016年6月11日中国文化遗产日启动,这也是西藏首次采用该技术进行文物保护。布达拉宫始建于公元7世纪藏王松赞干布时期,距今已有1300年的历史,是西藏现有的世界文化遗产之一。
20世纪80年代末和2000年初,布达拉宫分别经历了数年的大型维修,但其内部建筑基础形态并未全部揭开,精细化测绘对全面了解掌握布达拉宫建筑全貌及今后有效保护和修缮具有重要意义。“精确记录是对文物最好的保护,精准测绘技术就是按照1:1的比例重建一个数字化的布达拉宫。”布达拉宫管理处副处长觉旦表示,精准测绘技术可以精确到毫米单位。布达拉宫在完成主体建筑的数字化测绘后,将进一步完成对内部各种可移动文物进行精准的数据采集,不断丰富完善这张数字化“图纸”。
据介绍,布达拉宫精准测绘项目采用现代三维激光扫描、多视角影像重建和无人机航空摄影等技术,对布达拉宫建筑群及其周边地形的立面、平面、剖面进行测绘,根据采集的三维激光数据、纹理数据及其他测量数据,构建布达拉宫整体三维模型并绘制数字化图纸,作为后期修缮和遗产监测的基础。据悉,这项技术将逐步推广到罗布林卡、大昭寺等文物单位。
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