- Industry: Earth science
- Number of terms: 93452
- Number of blossaries: 0
- Company Profile:
Founded in 1941, the American Congress on Surveying and Mapping (ACSM) is an international association representing the interests of professionals in surveying, mapping and communicating spatial data relating to the Earth's surface. Today, ACSM's members include more than 7,000 surveyors, ...
That set of points, in an image, which is the image of a single point on the object.
Industry:Earth science
The representation of an image by a set of numbers and the subsequent reduction of this set to a smaller set that can still be converted back to a satisfactory copy of the original image. Image compression is used primarily to reduce the bandwidth needed to transmit images by radio or wire.
Industry:Earth science
The image on a photograph. The terms photographic image and photograph are practically synonymous and there seems to be not reason to use the former instead of the latter.
Industry:Earth science
A bench mark selected as the common meeting point for lines of levels or links of levels.
Industry:Earth science
The interval of time between the upper or lower transit of the Moon over the local meridian or Greenwich meridian and the next lower high (lower low) water. This term is used when there is considerable diurnal inequality.
Industry:Earth science
(1) That unique point common to the plane of a photograph, the principal plane, and the plane of a hypothetical photograph assumed truly vertical and taken from the same camera station and having the same principal distance. (2) The point, on a photograph, at which the principal aline and the isometric parallel intersect. (3) The point at which the bisector of the angle between the plumb line and the photograph perpendicular intersects the plane of the photograph. The isocenter is significant because it is the center from which tilt caused displacements of images radiate.
Industry:Earth science
A line along which both the pressure and the height above mean sea level are constant.
Industry:Earth science
A line, on a map, representing a line along which atmospheric density is constant.
Industry:Earth science
A sketch or diagram showing the details of what leveling has been done at a junction.
Industry:Earth science
