DIGITAL POINTS TRANSFER FOR AEROTRIANGULATION
BY ANALYTICAL PLOTTER
G.A.Zotov, L.B.llyin, S.S.Nekhin,
Central Research Institute of Geodesy,
Air Survey and Cartography (TsNIIGAIK),
Moscow, Russia
S.V. Oleinik,
the "Aerogeopribor" Production Association,
Vinnitsa, Ukraine
Commission ll, Working Group S
KEY WORDS: Analytical, Triangulation, Technology, Software, Computer,
Block adjustment, Accuracy, Digital point transfer
ABSTRACT:
The paper discusses the main aspects of automatic point transfer in processe of
aerotriangulation by analytical stereoplotter. Hardware and software are presented. The
developed technology features are an exclusion of artifical tie point marking from
photogrammetric bridging and substitution of it for digital points transfer. The new
technology permits to improve accuracy of photogrammetric measurements, to automate
processes of project designing, point coordinate measuring on aerial photographs, and
checking of results obtained from major procedures. The technology leads to productivity
increase, and makes the routine work of an operator much easier. As preliminary
calculations have shown, gain an annual economical effect of about 50 million roubles
per one working station.
1. INTRODUCTION
Relaible and precision identification and plotter permits to improve accuracy of
marking of tie points are of great photogrammetric measurements, to
importance in photogrammetric bridging. ^ automatise processes of block designing,
The technology, currently in practice in point coordinate measuring on aerial
aerotriangulation, with artificial tie points photographs, and checking of results
marking | and sterocomparators applied obtained from major procedures.
does not allow an efficiency increase of
the process and prevents from introducing The technology involves using of the
promising mapping technologies based following software and hardware devices:
on analytical plotters. In this connection the -an analytical plotter (AP) STEREO-
developed technology features are an ANAGRAPH;
exclusion of artificial tie point marking - a PC compatible with IBM PC/AT
from photogrammetric bridging and 3863/4/120:
substitution of it for digital points - a digitizer of a plotting board-type
transfer. The .new technology based on SMP-6410;
using of STEREOANAGRAPH analytical - a sterescope ZLS-4;
437
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B2. Vienna 1996