The Fundamental Problems of Moral Decadence in Malaysia.
Introduction
Laser scanning is a lot like photography. A 3D scanner is a device that analyzes a real-world object or environment to collect data on its shape and possibly its appearance for example colour. The collected data can then be used to construct digital, three dimensional (3D) models useful for a wide variety of applications. While a camera collects colour information about surfaces within its field of view, 3D scanners collect distance information about surfaces within its field of view. The “picture” produced by a 3D scanner describes the distance to a surface at each point in the picture.
It is important to realize that these machines work on a line of sight. It will almost always take more than one scan to get a complete picture of a room. These scans have to be brought in a common reference system, a process that is usually called alignment or registration, and then merged to create a complete model. This whole process, going from the single range map to the whole model, is usually known as the 3D scanning pipeline.
History and Development of Laser Scanning System
The history of laser technology is over 40 years old; lasers have been knownfor over 30 years and used in practical applications for more than 25 years.The scientific basis of laser technology lies in the realm of atomic physics,more strictly speaking, foundations were laid by the Danish physicist NielsBohr (1913 - theory of the structure of the hydrogen atom) and the GermanAlbert Einstein (1916 - introduction of the concept of stimulated emission) [1, 2].
In 1950, A. Kastler from France proposed optical pumping (creation ofchanges in the distribution of filling of different atomic energy levels as aresult of excitation by light radiation) which earned him the Nobel Prizein physics in 1966 [2].
In the years 1953 to 1954, American scientists from Columbia Univer-sity, Ch. H. Townes and J. Weber, and Soviet researchersN. G. Basov andA. M. Prokhorov, working independently at the
Laser scanning is a lot like photography. A 3D scanner is a device that analyzes a real-world object or environment to collect data on its shape and possibly its appearance for example colour. The collected data can then be used to construct digital, three dimensional (3D) models useful for a wide variety of applications. While a camera collects colour information about surfaces within its field of view, 3D scanners collect distance information about surfaces within its field of view. The “picture” produced by a 3D scanner describes the distance to a surface at each point in the picture.
It is important to realize that these machines work on a line of sight. It will almost always take more than one scan to get a complete picture of a room. These scans have to be brought in a common reference system, a process that is usually called alignment or registration, and then merged to create a complete model. This whole process, going from the single range map to the whole model, is usually known as the 3D scanning pipeline.
History and Development of Laser Scanning System
The history of laser technology is over 40 years old; lasers have been knownfor over 30 years and used in practical applications for more than 25 years.The scientific basis of laser technology lies in the realm of atomic physics,more strictly speaking, foundations were laid by the Danish physicist NielsBohr (1913 - theory of the structure of the hydrogen atom) and the GermanAlbert Einstein (1916 - introduction of the concept of stimulated emission) [1, 2].
In 1950, A. Kastler from France proposed optical pumping (creation ofchanges in the distribution of filling of different atomic energy levels as aresult of excitation by light radiation) which earned him the Nobel Prizein physics in 1966 [2].
In the years 1953 to 1954, American scientists from Columbia Univer-sity, Ch. H. Townes and J. Weber, and Soviet researchersN. G. Basov andA. M. Prokhorov, working independently at the
References: Wikipedia article: http://en.wikipedia.org/wiki/3D_scanner http://www.leica-geosystems.com/hds/en/lgs_5210.htm http://www.faro.com/content.aspx?ct=us&content=pro&item=5 https://www.nextengine.com/indexSecure.htm http://www.david-laserscanner.com/ http://www.imodeller.com/en/