The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008
Figure 7. True position (road boundaries) on Orthophoto
The standard deviation for accuracy is calculated for the
observations and accepts or rejects criteria is determinate for
each of them using statistical methods described in
documentation. Orthophoto accuracy should only be controlled
on good visible objects.
7. CONCLUSION
Production of spatial data is still in progress, first experiences
enabled to improve implemented documents and technology
procedures. Very important part in the cycle of improvement
lies on the Croatian Geodetic Institute that controls most of the
geodetic Products and their role is to evaluate the Products and
its Specification in the same time. It has to be pointed out that
the Quality Control System according to ISO norms is in
constant process of development and improvement. From NSDI
point of view is very important to include into database official
and approved data passed on quality control in Croatian
Geodetic Institute. Main reasons in this proposition are users
and their needs for accurate data.
REFERENCES
Republic of Croatia (2007): Law on State Survey and Real
Property Cadastre, Official Gazette “Narodne novine”, 17/2007,
pp. 1309-1328.
Joint venture of “GISDATA” d.o.o., “Trigger” d.o.o. and “Con
Terra” GmBH (2006): Consulting Services for system design
and implementation of the SGA GIS databases and design and
building of Geoportal and development of WWW sales for the
SGA, Inception Report, State Geodetic Administration of
Republic of Croatia 2006.
Remke, A; Wytzisk, A; Buehler, W, Stipic, D. (2005): Study on
Development of National Spatial Data Infrastructure in Croatia,
State Geodetic Administration of Republic of Croatia 2005.
State Geodetic Administration, 2003a, Product Specification
Topographic Data 1.0, Zagreb, SGA
Croatian Geodetic Institute, 2004a, Orthophoto Quality
Elements and Subelements 1.0, Zagreb, CGI
Croatian Geodetic Institute, 2004b, Quality Control of
Geographic Information 1.1, Zagreb, CGI
Croatian Geodetic Institute, 2004c, Sampling Guidelines 1.0,
Zagreb, CGI
