ANALYSIS OF THE FORMULAS FOR CALCULATION OF GEOMETRICAL RESOLUTION AT SCANNING FOR ENSURING OF GRAPHIC PHOTOPLANS RESOLUTION AND THE RESOLVING POWER OF A PHOTOGRAPH
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Abstract
In the instruction on photogravimetrical works at creation of topographic maps and plans formulas for calculating resolution at scanning for ensuring of graphic photoplans resolution and the resolving power of a photograph are given. As for graphic photoplans the term “graphic photoplan” itself is not clear and it is not clear what it can be applied for. The instruction mustn’t contain any dual or questionable interpretations. More-over the “graphic photoplans” resolving power calculated by formula of the connection between scanning and resolving power is low. The resolving power of a photograph plays a really important role in the decoding and it is necessary to calculate correctly the resolution at scanning of the photographs which ensure a qualitative decoding. But the scales of aerial photographs and maps made are not taken into account in the formula. As a re-sult when using photographs of different scales the equal values of the geometrical element resolution were obtained but different object dimensions being decoded with specified probability, which must not happen. The issue of the formula for calculating of the resolution at scanning for ensuring the qualitative decoding is not easy and requires further studies.
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References
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