What is the importance of aerial photography?

Aerial photography is widely used in archaeological prospection due to its potential to recognize site locations, record and monitor changes of their landscapes through time, and even discover subsurface features by means of the topsoil characteristics or by stereoscopic examination of images (Figure 7).

What technology does aerial photographs use?

photogrammetry
A technique known as photogrammetry (q.v.), which involves the simultaneous projection of the overlapping views, makes possible the preparation of contour maps or three-dimensional models of the terrestrial surface that has been photographed.

What are the importance of aerial photography in agriculture?

Aerial photographs are point-in-time visual records of specific land areas. They are used to assess field conditions and detect crop or soil problems that might otherwise go unnoticed at ground level. Often, it’s the patterns of symptoms that can give clues to the cause and extent of various problems.

What is aerial exploration?

Aerial survey is a method of collecting geomatics or other imagery by using airplanes, helicopters, UAVs, balloons or other aerial methods. Aerial surveys can provide information on many things not visible from the ground.

How do archaeologists use aerial photography?

Aerial reconnaissance is a very effective method of discovering and recording archaeological sites and involves archaeologists flying in a light aircraft, searching for, and photographing archaeological sites and landscapes.

How do aerial photographs work?

Air photo flights typically fly a series of parallel, straight lines. Along each line, photos are taken every few seconds so that they overlap with each other. The cameras are usually connected to a device that automatically snaps photos based on speed and direction of the aircraft.

What is the right time for aerial photography?

The peak time to maximize natural light is to shoot around golden hour. The light is warmer, softer, and lends a unique glow to the landscape. Drone photography tips suggest taking photos 30-60 minutes before sunset or after sunrise for the best results.

What is scale of aerial photographs?

Scale is the ratio of a distance on an aerial photograph the distance between the same two places on the ground in the real world. It can be expressed in unit equivalents like 1 cm= 1,000 km(or 12,000 inches) or as a representative fraction (1:100,000).

What do you understand by aerial photography?

An aerial photograph, in broad terms, is any photograph taken from the air. Normally, air photos are taken vertically from an aircraft using a highly-accurate camera.

What does aerial photography mean in geography?

Aerial photography (or airborne imagery) is the taking of photographs from an aircraft or other airborne platforms.

What type of aerial photograph can be used by archaeologists?

Following in the footsteps of Henry Wellcome, kite aerial photography is now being used on archaeological sites outside the visible spectrum, from the near ultra-violet through to the near and thermal infra-red.

What are the characteristics of aerial photography?

(1) The lens axis is perpendicular to the surface of the earth. (2) It covers a relatively small area. (3) The shape of the ground area covered on a single vertical photo closely approximates a square or rectangle. (4) Being a view from above, it gives an unfamiliar view of the ground.

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