基于PHOTOMOD6的ADS80 L1级影像DOM制作方法及精度评价

Method of Producing DOM Based on ADS 80 Level1 Images in PHOTOMOD6 and Its Precision Evaluation

PHOTOMOD是俄罗斯Racurs公司生产的全数字摄影测量系统,本文介绍了基于PHOTOMOD软件利用ADS 80 L1级影像制作DOM的方法及发现的问题,并以试验测区的成果DLG和DOM为基准,评价了软件制作DOM的精度。总体上,在与成果DLG的套合检查中,分别将成果DLG中的房屋、地类界和等高线三类要素叠加在本文生成的DOM上,结果表明二者的套合情况较好;在与成果DOM的精度对比中,本文选取的253个检测点在x方向和y方向的平面中误差分别为0.96 m和1.25 m,总的平面中误差为1.58 m,可满足国家规范中DOM的精度要求。本文的试验和研究对正射影像生产具有一定的参考价值和借鉴意义。

PHOTOMOD is a full digital photogrammetry system developed by Racurs Company in Russia. This paper introduced the method of producing DOM based on ADS 80 Levell images in PHOTOMOD, besides ; the problems encountered in the experiment were also presented. The precision of DOM produced by PHOTOMOD was evaluated by using DLG and DOM production of the experimental block as a basis. In general, in the precision comparison between DLG and DOM, the rural residential areas, vegetation classification boundary and contour lines which were all vector were overlapped on the DOM produced by PHOTOMOD, the combined images showed a good overlapping result ; In the precision comparison between DOM and DOM, the planimetric RMS in x and y direction was 0.96 and 1.25 meter, respectively. The overall planimetric RMS was 1.58 meter, which meet the required precision of DOM in national standardized document. The experiment and research of this paper may be very helpful for people who deal with 4D production.