基于Z-buffer算法优化的大型变电站场景模型快速线消隐方法  

Fast hidden line removal method for large-scale 3D substation scene model based on Z-buffer algorithm optimization

作　　者：罗国亮 王睿 吴昊 赵昕 黄晓生[2] 曹义亲[2] 廖成慧 LUO Guo-liang;WANG Rui;WU Hao;ZHAO Xin;HUANG Xiao-sheng;CAO Yi-qin;LIAO Cheng-hui(Jiangxi Bowei New Technology Co.,Ltd,Nanchang Jiangxi 330000,China;School of Software,East China Jiaotong University,Nanchang Jiangxi 330013,China)

机构地区：[1]江西博微新技术有限公司,江西南昌330000 [2]华东交通大学软件学院,江西南昌330013

出　　处：《图学学报》2021年第5期775-783,共9页Journal of Graphics

基　　金：国家自然科学基金地区基金项目(地区)(61962021,61763011);江西省科技厅2018重点研发计划项目(20181BBE50024);研究生创新资金项目(YC 2019-S258);江西省自然科学基金重点项目(20202ACBL202008);中国博士后科学基金第13批特别资助(2020T130264);江西省高等学校教学改革研究省级课题(JXJG-20-5-20);2020年度江西省博士后科研项目择优资助(一等);江西省教育科学规划课题(20YB056);中国博士后科学基金面上项目(二等资助,2019M662261);江西省博士后研究人员日常经费资助(2019RC27);浙江大学CAD&CG国家重点实验室开放课题经费(A2023);江西省自然科学基金重点研发项目(20192BBE50079)。

摘　　要：针对现有三维模型消隐方法面向大规模三维场景模型应用中存在的计算复杂、耗时长等缺陷,本文提出了基于改进Z-buffer算法对大型变电站场景消隐的快速可视化方法。首先,为了简化计算,将场景模型数据整合并重构;其次,通过透视投影变换将变电场景模型像素化;进一步,基于Z-buffer算法高效的像素化计算特性提出了快速模型筛选方法,从而得到变电场景的子模型遮挡关系。最后,实验中将所得遮挡关系列表融合现有消隐算法,结果表明本文提出的方法能够大幅度提升消隐的运算性能。In order to overcome the defects of the application of hidden lines elimination to large-scale 3D scene models,such as high complexity calculation and high time consumption,in this article,a time efficient visualization method was presented for the hidden-line elimination of large substation scenes based on the improved Z-buffer algorithm.First,the original scene model data was integrated and then restructured to simplify the calculation.Secondly,the substation scene model was pixelated through perspective projection transformation.Then a Z-buffer algorithmbased model selection method was proposed to obtain the occlusion relationship of the sub-model of the substation scene,which took the advantage of its pixilation property.Finally,the obtained occlusion relationship lists were merged to the existing hidden line elimination algorithm.Our experimental results prove that the proposed approach can greatly enhance the computing performance of the application of hidden lines elimination to large-scale 3D scene models.Finally,the sub-model occlusion relationship of the substation scene was obtained.

关 键 词：大规模变电场景 消隐 Z-buffer算法 模型筛选 运算性能 

分 类 号：TP751.1[自动化与计算机技术—检测技术与自动化装置]