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Lidar (/ ˈ l aɪ d ɑːr /, also LIDAR, an acronym of "light detection and ranging" [1] or "laser imaging, detection, and ranging" [2]) is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver.
The lidar can aim its laser beam in a wide range: its head rotates horizontally, a mirror flips vertically. The laser beam is used to measure the distance to the first object on its path. The time-of-flight 3D laser scanner is an active scanner that uses laser light to probe the subject.
The lidar sensor is accompanied by a pair of cameras—one facing the front and the other aimed rearward—that snap a frame every few seconds to provide human and computer annotators with some ...
Typical data collected includes aerial photography, Lidar, remote sensing (using various visible and invisible bands of the electromagnetic spectrum, such as infrared, gamma, or ultraviolet) and geophysical data (such as aeromagnetic surveys and gravity measurements). It can also refer to a chart or map made by analyzing a region from the air.
Also may mean "Perspective Control" for a lens that has the ability to shift to tilt to control linear perspective in an image. May also stand for personal computer in conjunction with digital photography. PDAF: Phase-detection autofocus. One of the mechanisms of automatic lens focusing. PF: Purple fringing. A form of chromatic aberration in ...
DNA annotation or genome annotation is the process of identifying the locations of genes and all of the coding regions in a genome and determining what those genes do. An annotation (irrespective of the context) is a note added by way of explanation or commentary. Once a genome is sequenced, it needs to be annotated to make sense of it. [49]
Allie Bean Photography Violette Sewell with her brothers Brody and Shepherd. Related: Daughter Shaves Head in Solidarity with 'Warrior' Mom Whose Stage 4 Cancer Was Misdiagnosed as IBS
The digital database is then combined in a graphics program with annotations and symbols, ultimately being used to produce the map printing plates with a photoplotter. The stereoplotter serves an important need of allowing aerial photos to become the base for contours and elevation maps.