scholarly journals The excavation of two crop-marks at Huntingtower, Perthshire

1983 ◽  
Vol 112 ◽  
pp. 580-583
Author(s):  
Gordon J Barclay
Keyword(s):  
Aerial Photography ◽  
Aerial Photographs ◽  
Cambridge University ◽  
Unpublished Note ◽  
Ancient Monuments

In the 1940s and 50s Mr Eric Bradley, a flying instructor at Scone, noticed and described a series of crop-marks to the W of Perth during attempts to trace the Roman road, from the Gask Ridge, at its last known point near Dupplin Lake some 8-5 km to the SW of the fort at Bertha. In 1969 Dr J X W P Corcoran admirably summarized the evidence available from Mr Bradley's notes and maps, Cambridge University Committee for Aerial Photography (CUCAP) photographs and RAF vertical photographs in an unpublished note, now in the NMRS. In 1967 a valuable series of aerial photographs of the Huntingtower sites was taken by John Dewar Studios for the Inspectorate of Ancient Monuments. Subsequently RCAHMS has photographed the area resulting in the discovery of further features.

Estimating Pine Density and Competition Condition in Young Pine Plantations Using 35mm Aerial Photography

1989 ◽  
Vol 13 (3) ◽  
pp. 107-112 ◽  
Author(s):  
James L. Smith ◽  
Shepard M. Zedaker ◽  
Richard C. Heer
Keyword(s):  
Decision Making ◽  
Aerial Photography ◽  
Field Work ◽  
Treatment Decisions ◽  
Pine Plantations ◽  
Aerial Photographs ◽  
Prediction System ◽  
Competition Condition ◽  
Competition Control

Abstract A prediction system was developed that estimated pine density and hardwood competition levels in young plantations using simple measurements made on 35mm aerial photographs. The precision of the prediction system was found to be moderate to good. The use of these photo-based modelsin a decision-making situation was examined. Ground-based decisions regarding replanting, spraying for competition control, or no treatment were compared to similar decisions reached strictly from the aerial photographic measurements. Approximately 80% of all decisions agreed, and 90% of theno-treatment decisions agreed. While aerial photographs do not totally eliminate the need for field work, it is clear that photographic information can often produce reliable decisions with reduced field efforts. South. J. Appl. For. 13(3):107-112.

Coastal Studies by Sequential Air Photography

1965 ◽  
Vol 19 (4) ◽  
pp. 372-381 ◽  
Author(s):  
H. L. Cameron
Keyword(s):  
Shallow Water ◽  
Systematic Study ◽  
Aerial Photography ◽  
Aerial Photographs ◽  
Current Action ◽  
Coastal Changes ◽  
Air Photo

With the advent of air photography, many problems of mapping coast lines, such as those caused by surf action and underwater obstructions, were solved, as the vertical air photo shows the exact configuration of the coast and reveals many of the shallow-water obstructions. This paper shows that aerial photographs, obtained at intervals ranging from 2 to 20 years, contain important information on long-term coastal changes, brought about by wave and current action over a period of time. Two examples of such changes, revealed by sequential aerial photography, are given. It is concluded that a program of systematic study of existing photographs and supplementary rephotography would more than justify its cost.

scholarly journals Shoreline and surface area changes induced by floating islands in peatland lakes (Tuchola Pinewood Forest, Poland)

2011 ◽  
Vol 11 (4) ◽  
pp. 151-162
Author(s):  
Grzegorz Kowalewski
Keyword(s):  
Surface Area ◽  
Aerial Photography ◽  
Small Area ◽  
Aerial Photographs ◽  
Topographic Maps ◽  
Low Resolution ◽  
Shoreline Changes ◽  
The Past ◽  
Floating Mat ◽  
Observation Period

Shoreline and surface area changes induced by floating islands in peatland lakes (Tuchola Pinewood Forest, Poland)Multitemporal aerial photography and topographic maps were applied to investigate shoreline and surface area changes induced by floating islands in three small (area < 1 ha) peatland lakes in the Tuchola Forest. The observation period covers the last 60 years (1951-2011). Shorelines of peatland lakes are stable, unless parts of them detach as floating mats and become floating islands which could have migrated sporadically in the past. Currently, they are rooted permanently to the mat (Dury I and Dury V Lakes) or float loose (Kozie Lake). In the observation period, movement of the islands and closing of lake bays due to overgrowing were the main reasons of shoreline changes. Due to low resolution of old aerial photographs, other changes are not decipherable and can be treated as negligible. Therefore, no reasonable conclusions can be drawn regarding the actual floating mat encroachment during the last 60 years, and the rate of lake shrinking, based of aerial photographs.

Aborigine and settler: archaeological air photography

Antiquity ◽  
1978 ◽  
Vol 52 (205) ◽  
pp. 95-99 ◽  
Author(s):  
Graham Connah
Keyword(s):  
New England ◽  
Aerial Photography ◽  
New South ◽  
Aerial Photographs ◽  
Archaeological Sites ◽  
Low Level ◽  
South Wales ◽  
National University ◽  
Great Tradition ◽  
The University

Australian students of archaeology could be excused for thinking that aerial photography is a technique with little archaeological application in their own country. Archaeological text books usually draw their examples of the uses of aerial photography from Europe or the Americas; even the pages of Antiquity, graced for many years by the work of J. K. St Joseph and others, suggest a similar geographic limitation. It is also a fact that there are not many published aerial photographs of Australian archaeological sites. In particular, the great tradition of low-level oblique photography with hand-held camera seems to have had comparatively little impact on Australian archaeology. There have been notable exceptions: for instance Bill Webster, of the University of New England, has taken low-level oblique infra red photographs of the Moore Creek Axe Quarry near Tamworth, New South Wales (Binns and Mc- Bryde, 1972; McBryde, 1974); Jim Bowler of the Australian National University provided photography of Lake Mungo (Mulvaney, 1975, P1.47), and Judy Birmingham of Sydney University has published an aerial photograph of the Irrawang Pottery (Birmingham, 1976)

Interrupted Ditch Enclosures in Britain: the use of Aerial Photography for Comparative Studies

1976 ◽  
Vol 42 ◽  
pp. 161-186 ◽  
Author(s):  
Rog Palmer
Keyword(s):  
Aerial Photography ◽  
Comparative Studies ◽  
Aerial Photographs ◽  
Aerial Reconnaissance ◽  
Objective Basis ◽  
Attribute Analyses

SummaryAnalyses have been directed towards providing an objective basis for the untested assumption that interrupted ditch enclosures, discovered in riverine situations by aerial reconnaissance, are related to the high-lying neolithic causewayed enclosures. The results of a series of attribute analyses appear to justify the unity of the enclosures, while at the same time suggesting a division into four geographical groups. Aerial photography has been used to provide data for comparative studies. In this case, sites known only from the air have been compared with excavated enclosures which show similar characteristics. The resulting classification is thought to demonstrate the feasibility of such an application of aerial photographs.

scholarly journals Aerial Photography Used for Spatial Pattern Analysis of Late Blight Infection in Irrigated Potato Circles

2003 ◽  
Vol 93 (7) ◽  
pp. 805-812 ◽  
Author(s):  
Dennis A. Johnson ◽  
J. Richard Alldredge ◽  
Philip B. Hamm ◽  
Bruce E. Frazier
Keyword(s):  
Late Blight ◽  
Aerial Photography ◽  
Large Scale ◽  
Temporal Dynamics ◽  
Disease Incidence ◽  
Aerial Photographs ◽  
Spatial Pattern Analysis ◽  
Initial Inoculum ◽  
Disease Patterns ◽  
Commercial Potato

Spatial and temporal dynamics of late blight were investigated from color, infrared aerial photographs of five commercial potato fields in the Columbia Basin during epidemics in 1993, 1995, and 1998. Aerial photographs were taken one to four times at 6- to 21-day intervals. Photographs were scanned and pixels, representing approximately 1 m2 in the field, were used in the analysis. Late blight-infected plants were aggregated as indicated by runs analysis. Significant z-tests were computed for four directions during each sampling date in each of the five fields. Absolute z-values for runs analysis increased, indicating increasing aggregation in the four directions, as disease incidence increased in the early and midphases of the epidemics in each field. Variograms indicated the existence of autocorrelation among infected plants in four directions; the range of influence increased as disease incidence increased except at the highest levels of disease. Late blight was observed to spread in fields as foci. Late blight foci enlarged in size, produced distinct daughter foci, and coalesced. A field where initial inoculum likely originated from infected seed tubers exhibited less initial aggregation than the other fields, perhaps due to a different source of primary inoculum. Aerial photography coupled with spatial analyses of late blight-infected plants was an effective technique to quantitatively assess disease patterns in relatively large fields and was useful in quantifying an intensification of aggregation during the epidemic process on a large scale.

scholarly journals A COMPARISON TEST OF FEATURE EXTRACTION FROM AERIAL PHOTOGRAPHY

2012 ◽  
Vol 30 (4) ◽  
pp. 112-116
Author(s):  
Birutė Ruzgienė
Keyword(s):  
Feature Extraction ◽  
Aerial Photography ◽  
Urban Areas ◽  
Data Accuracy ◽  
Aerial Images ◽  
Aerial Photographs ◽  
Accurate Data ◽  
Building Models ◽  
Photogrammetric Method ◽  
Automatic Systems

All features visible in the aerial photographs can be collected by traditional photogrammetric methods; however, such techniques require high operator skills and are very time-consuming. The decision which photogrammetric method uses in mapping is primarily economic, also workload, project deadline requirements and accurate data have to be considered. Up-to-date developed automatic or semi-automatic systems are highly effective for 3D features extraction in urban areas. The investigation objective is the comparison of analytical and digital semi-automatic photogrammetric mapping methods for 3D building models extraction from aerial images analysing in time-consuming and in collected data accuracy consideration.

scholarly journals Analysis Of Aerial Photography With Drone Type Fixed Wing In Kotabaru, Lampung

2018 ◽  
Vol 2 (1) ◽  
pp. 102-107
Author(s):  
Indreswari Suroso ◽  
Erwhin Irmawan
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Aerial Photography ◽  
Ground Level ◽  
Aerial Photographs ◽  
Aerial Photos ◽  
Above Ground Level ◽  
The World ◽  
Air Capture ◽  
Aerial Vehicle ◽  
Operational Time

In the world of photography is very closely related to the unmanned aerial vehicle called drones. Drones mounted camera so that the plane is pilot controlled from the mainland. Photography results were seen by the pilot after the drone aircraft landed. Drones are unmanned drones that are controlled remotely. Unmanned Aerial Vehicle (UAV), is a flying machine that operates with remote control by the pilot. Methode for this research are preparation assembly of drone, planning altitude flying, testing on ground, camera of calibration, air capture, result of aerial photos and analysis of result aerial photos. There are two types of drones, multicopter and fixed wing. Fixed wing  has an airplane like shape with a wing system. Fixed wing use bettery 4000 mAh . Fixed wing drone in this research used   mapping in  This drone has a load ability of 1 kg and operational time is used approximately 30 minutes for an areas 20 to 50 hectares with a height of 100 m  to 200 m and payload 1 kg  above ground level. The aerial photographs in Kotabaru produce excellent aerial photographs that can help mapping the local government in the Kotabaru region.

scholarly journals Statement of the Problem of Complete Set of UAV Group on the Basis of Models of Granular Calculations and Fuzzy Logic

2021 ◽  
pp. 25-38
Author(s):  
Vyacheslav Korolyov ◽  
Maksim Ogurtsov ◽  
Alexander Khodzinsky
Keyword(s):  
Fuzzy Logic ◽  
Aerial Photography ◽  
Situational Awareness ◽  
Video Camera ◽  
Video Data ◽  
Aerial Photographs ◽  
Navigation Data ◽  
Heterogeneous Groups ◽  
Big Data Technologies

Introduction. The increase in the number of heterogeneous groups of UAVs that jointly perform aerial photography missions generates a large amount of poorly structured information: videos, photos, telemetry records, navigation data. To build intelligent databases from unstructured information sources from UAV groups, granular computational approaches are proposed. These approaches are the basis for the application of Big Data technologies and artificial intelligence to increase situational awareness or commercial value of knowledge gained from the data flow from UAV groups. The purpose of the article. Develop new models for assessing the quality of video data from UAVs, approaches to equipping heterogeneous groups of UAVs and indicators for assessing its tactical and technical characteristics as a team. Results. The success of UAV group mission planning is based on the forecast of quantitative and qualitative indicators of the received video data. For this purpose, a model for forecasting the quality of the obtained aerial photographs based on the data on the speed, height of the UAV and the angle of the video camera is proposed. The model is based on the development of the theory of fuzzy sets of the first and second types. An example of the implementation of the model in the system of computer mathematics MatLab 2020b is given. Based on the analysis of a number of works on UAV classification and the proposed model of image quality, the method of equipment for the UAV group and the choice of UAV types are built, as well as the content of the combinatorial optimization problem based on the classic backpack problem. An example of calculations of tactical and technical characteristics for the Ukrainian UAV "Spectator" of Meridian ltd. is given. Conclusions. A new model for assessing the quality of aerial photography images based on fuzzy logic has been developed. The method of staffing UAV groups is proposed. Keywords: Fuzzy logic, granular calculations, UAV equipment, heterogeneous groups, computer simulation.

Sign in / Sign up

Export Citation Format

Share Document