3D Modeling of Buildings: Outstanding Sites (Focus) by Raphaële Héno

By Raphaële Héno

Conventional topographic databases, bought via seize on aerial or spatial pictures supply a simplified 3D modeling of our city surroundings, answering the desires of diverse purposes (development, hazard prevention, mobility administration, etc.). even if, after we need to signify and study extra complicated websites (monuments, civil engineering works, archeological websites, etc.), those types now not suffice and different acquisition and processing potential need to be applied. This booklet makes a speciality of the research of tailored lifting skill for “notable buildings”. The tools tackled during this publication disguise lasergrammetry and the present suggestions of dense correlation in response to photographs utilizing traditional photogrammetry.

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11. 2. Sharpness The sharpness of an image is adjusted by the focus range. The depth of field, or the area in the scene occupied by sharp objects on the image, can be increased if [FER 04]: – the diaphragm is relatively closed (high aperture number, around 9 or 11 depending on the camera; higher values can cause unfortunate diffraction effects); – the focal length is short; – the focusing distance is large. To achieve a large depth of field, limiting the risk that certain areas of the image are blurred and therefore unsuitable for photogrammetric processing, it is preferable to work with the diaphragm in the closed position.

4. 1. 2. 3. 4. 5. 1. 2. 3. 4. 1. Bibliography Index First published 2014 in Great Britain and the United States by ISTE Ltd and John Wiley & Sons, Inc. Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the Copyright, Designs and Patents Act 1988, this publication may only be reproduced, stored or transmitted, in any form or by any means, with the prior permission in writing of the publishers, or in the case of reprographic reproduction in accordance with the terms and licenses issued by the CLA.

Fr/rge. org/. 3 Global Navigation Satellite System. mc/Action-Gouvernementale/La-Qualite-de-Vie/La-Prospective/Actualites/La-maquette-3D-de-Monaco-presentee-par-la-DPUM-a-Imagina. ch/sitg/cartes/3d. html#. pdf. eu (National School of Geographical Sciences). 1. History in France Although it seems unnecessary at this juncture to restate the history of photogrammetry (we refer the reader to [LAU 99, ROU 36] or [VIN 13]), it is interesting to highlight the fact that the first projects which used this technique were on outstanding sites.

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