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Abstract
Abstract. Using high resolution image for making city map by digital rectification is simple.But five control points can correct image deformation precisely and reliable are not easy particular making 1:500 scale street view map. Nowadays, RTK-GPS becomes the definitive mapping instrument to draw 1:1000 scale maps but get some shortages. That are, 1. Operators can’t have an overall impression of the mapping place. 2 Measuring points are separate so that the lines are not natural and smooth. 3. Data transmission may have 0.1 % mistakes which waste time to check and are troublesome. Given method comes as a substitute, which keeps all advantages and use RTK to definite the key points for drawing. Here are three examples for reference. The map size are extremely large and beyond the custom. (area; 60cm×70cm,80cm×180cm, 60cm×200cm) Which without any splices. The interpolation for rectifying is surface splines which were originally developed for interpolation wing deflections of aircraft; Surface splines are a mathematical tool to interpolate a fuction of two variables. It is Base upon the small deflection equation of an infinite plate. The main adtvantages of the surface splines are that the coordinates of the known points needs not be located in a rectangular array and the function may be differentiated to find slopes. (Contributed by Harderand Desmarais 1972)
Highlights
It is known to all that planning programe usually use 1:2000 scale maps and the Photogrammetry system mainly provides them
The interpolation for rectifying is surface splines which were originally developed for interpolation wing deflections of aircraft; Surface splines are a mathematical tool to interpolate a fuction of two variables
In the texbook there is “The photo map can be used as relief map” as well as the rules saying that in the level terrain arial photogrammetry must follow Photo-planimetric method
Summary
It is known to all that planning programe usually use 1:2000 scale maps and the Photogrammetry system mainly provides them. 2. Brief review of making large scale map Stiff are all familiar with the function of GPS and RTK is suitable for all measuring works, from geodetic to cadastral surveying. Brief review of making large scale map Stiff are all familiar with the function of GPS and RTK is suitable for all measuring works, from geodetic to cadastral surveying It can set position quickly and accurately so became the definitive mapping instrument for drawing 1:500 scale maps compared with the digital photogrammtry it enjoys extraordinary accuracy, besides that, RTK or total station digital mapping has shortages as following: 1. In the texbook there is “The photo map can be used as relief map” as well as the rules saying that in the level terrain arial photogrammetry must follow Photo-planimetric method
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