Mapping from Air Photographs: Discussion

Whitlock, G. F. A.; Newcombe, Lt.-Colonel; Salmon, Lt.-Colonel; Brock, Major; Holdich, Thomas; Hinks,; Hardy, Gathorne; MacLeod, M. N.

doi:10.2307/1780415

Cited by 2 publications

(1 citation statement)

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“…The use of these new and enhanced techniques was then considered for non-war applications. It was duly recognised that large-scale topographic maps could be readily produced, even for cadastral applications [38,39], although the role of the surveyor for more detailed work remained recognised: "One may safely sum up the situation by saying that the aeroplane is already a valuable instrument for both exploration and accurate survey in flat country, and that it should not be long before its application will be universal, and one may venture to predict that in survey, as in other matters, the Great War will mark the beginning of a new era." The analysis here included cost breakdowns and comparisons between ground methods and aerial survey [39], summing at between 5 and 15 pounds sterling, per square mile, at 1/2500 scale, for aerial survey, and anywhere from 10 to 1100 pounds sterling per square mile at 1/2500 for a ground survey.…”

Section: Smentioning

confidence: 99%

Review of Remote Sensing for Land Administration: Origins, Debates, and Selected Cases

2021

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Conventionally, land administration—incorporating cadastres and land registration—uses ground-based survey methods. This approach can be traced over millennia. The application of photogrammetry and remote sensing is understood to be far more contemporary, only commencing deeper into the 20th century. This paper seeks to counter this view, contending that these methods are far from recent additions to land administration: successful application dates back much earlier, often complementing ground-based methods. Using now more accessible historical works, made available through archive digitisation, this paper presents an enriched and more complete synthesis of the developments of photogrammetric methods and remote sensing applied to the domain of land administration. Developments from early phototopography and aerial surveys, through to analytical photogrammetric methods, the emergence of satellite remote sensing, digital cameras, and latterly lidar surveys, UAVs, and feature extraction are covered. The synthesis illustrates how debates over the benefits of the technique are hardly new. Neither are well-meaning, although oft-flawed, comparative analyses on criteria relating to time, cost, coverage, and quality. Apart from providing this more holistic view and a timely reminder of previous work, this paper brings contemporary practical value in further demonstrating to land administration practitioners that remote sensing for data capture, and subsequent map production, are an entirely legitimate, if not essential, part of the domain. Contemporary arguments that the tools and approaches do not bring adequate accuracy for land administration purposes are easily countered by the weight of evidence. Indeed, these arguments may be considered to undermine the pragmatism inherent to the surveying discipline, traditionally an essential characteristic of the profession. That said, it is left to land administration practitioners to determine the relevance of these methods for any specific country context.

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Section: Smentioning

confidence: 99%