一种面向规则建筑物的OBJ文件无损压缩方法  

A Lossless OBJ File Compression Method for Regular Building

作　　者：黄鸿 赵志鹏 张磊 HUANG Hong;ZHAO Zhipeng;ZHANG Lei(Guangzhou O.CN International Technology Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]广州都市圈网络科技有限公司,广东广州510000

出　　处：《测绘通报》2018年第10期156-158,162,共4页Bulletin of Surveying and Mapping

摘　　要：Wavefront OBJ文件作为一种重要的数据交换格式,在三维空间数据可视化领域有着广泛的应用。本文对原始OBJ文件结构冗余、体积过大,网络传输效率低的问题进行了研究,在分析建筑特征的基础上,提出了面向规则建筑物的OBJ文件无损压缩数据模型和OBJ文件到压缩格式的转换方法,并结合三维引擎Three.js进行可视化验证。结果表明:该压缩方法能够有效地压缩数据体积,提高数据传输效率。Wavefront OBJ file,as an important data exchange format,is widely applied in 3 D spatial data visualization. To solve the problems of redundancy structure,too large file size and low network transport efficiency,lossless OBJ file compression model and compression method are proposed to solve the problem on the analysis of building characteristics,and a visual verification is conducted.The result shows that the compression method can compress file size efficiently and improve transport efficiency.

关 键 词：OBJ MTL 无损压缩 建筑物 Three.js 

分 类 号：P23[天文地球—摄影测量与遥感]