Accuracy of Heighting From Vertical Photography Obtained by Helicopter

Abstract

Experimental photography at scales up to 1 : 500 has been taken and analysed, subsequently, using Zeiss C8 and Wild A8 instruments. Results indicate that a 25 mm contour interval may be achieved on reliable surfaces, such as roads and aerodrome runways.

Providing an archaeological bird's‐eye view – an overall picture of ground‐based means to execute low‐altitude aerial photography (LAAP) in Archaeology

“…Moreover, the final cost is generally much higher than the relatively expensive price (Krijnen,2008).Thisfigureisavailableincolouronline at www.interscience.wiley.com/journal/arp of initial purchase, as the ever present risk of crashing can largely destroy the camera and the aircraft itself. Additionally, one needs to make sure that the serious vibrations, induced by both the motor and rotary wings of a helicopter (Belzner, 1962;Cheffins, 1969;Wester-Ebbinghaus, 1980;Walker, 1985) and the airframe vibrations in a model aeroplane (Harding, 1989), are damped. Even if current suspension systems can largely eliminate these vibrations, they still remain a serious issue (Eisenbeiss, 2004).…”

Aerial Photography by Radio Controlled Model Helicopter

“…Several attempts have been made to equip a helicopter with an aerial camera but with little success so far. It is very difficult to damp the typical vibrations of the helicopter's rotary wing (Belzner, 1962;Cheffins, 1969). Some close range aerial photographs have been taken by using captive balloons (Myers, 1978;Lubowski and Waldhausl, 1980).…”