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Orthophotography for rural map revision / M.H. Mayes in Photogrammetric record, vol 12 n° 67 (April - September 1986)  

Public [article]  inPhotogrammetric record > vol 12 n° 67 (April - September 1986) . - pp 45 - 61 Titre : Orthophotography for rural map revision Type de document : Article/Communication Auteurs : M.H. Mayes, Auteur ; A.B. Smith, Auteur Année de publication : 1986 Article en page(s) : pp 45 - 61 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] carte topographique [Termes IGN] milieu rural [Termes IGN] orthophotographie [Termes IGN] restitution [Termes IGN] révision cartographique [Termes IGN] Royaume-Uni [Termes IGN] traitement d'image Résumé : (auteur) The Ordnance Survey (OS) has recently investigated the potential of orthophotography for revision of 1:2500 scale mapping following advances in technology since an earlier investigation in 1973. The results have been compared with stereoplotting on an automated workstation. The background to the investigation and the existing revision methods used for rural areas are described. Orthophotography was produced on a Zeiss 22 Orthocomp at 1:2500 scale using digital height model data supplied from contours (at a 5 m vertical interval) on 1:10000 scale mapping. A pilot block of 20 km2 was revised at Kingsbridge, south Devon to assess three levels of revision (local fit, part remedial, and full remedial), using three techniques (orthophotograph overlay, Stereo-orthophoto Plotter and stereoplotting instrument). The quality of the image of the orthophotographs was below that expected for rectified enlargements and the cost of orthophotograph production made the technique uneconomic compared with existing techniques. Orthophotographs were capable of improving the accuracy of revision mapping, but the most cost effective and accurate method was full remedial revision using a Kern PG2 automated workstation. Numéro de notice : A1986-138 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.1986.tb00537.x En ligne : https://doi.org/10.1111/j.1477-9730.1986.tb00537.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76577 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
106-86011	RAB	Revue	Centre de documentation	En réserve L003	Disponible
106-86012	RAB	Revue	Centre de documentation	En réserve L003	Disponible

On line data processing for the PI-1A monocomparator using the BBC microcomputer / M.H. Mayes in Photogrammetric record, vol 11 n° 65 (April - September 1985)  

Public [article]  inPhotogrammetric record > vol 11 n° 65 (April - September 1985) . - pp 515 - 523 Titre : On line data processing for the PI-1A monocomparator using the BBC microcomputer Titre original : Traitement direct des données obtenues avec le mono comparateur PI-1A, à l'aide du micro-ordinateur BBC Type de document : Article/Communication Auteurs : M.H. Mayes, Auteur Année de publication : 1985 Article en page(s) : pp 515 - 523 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie [Termes IGN] micro-ordinateur [Termes IGN] monocomparateur [Termes IGN] traitement automatique de données Résumé : (auteur) The use of small computers for on line data processing in photogrammetry has developed from the desktop calculators of the early 1970s to the microcomputers of today. The restrictions of machine code programming, small memory and limited display have been overcome. Software has been written for the PI-1A monocomparator using the BBC microcomputer for a calibration test, relative orientation, and strip formation and adjustment in the on line mode. This low cost system is suitable for training inexperienced operators or students in analytical photogrammetry, with the sequence of observation guided by operator prompts and with error checking computations displayed. Re-observations can be made on line and acceptable observations stored for input to the strip adjustment program or subsequent block adjustment. Numéro de notice : A1985-096 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.1985.tb00521.x En ligne : https://doi.org/10.1111/j.1477-9730.1985.tb00521.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=23939 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
106-85011	RAB	Revue	Centre de documentation	En réserve L003	Disponible
106-85012	RAB	Revue	Centre de documentation	En réserve L003	Disponible