Friday, March 19, 2010

Laser Scanning

Laser scanning is a technique that can be used to collect data on the object or environment that can be used to create a 3D model, or a detailed reconstruction. There are a number of laser scanning applications, from highly specialized laser confocal microscope used in scientific laboratories 3D scanning of objects of historical value can not be reviewed individually for fear of damage but can be studied in a reconstructed form with a laser scanner. Many of the laser for different purposes. Laser scanner can operate in several ways, including the method of triangulation and "flight" method. In all cases, the laser power is low, so do not harm the object being scanned, and a series of beams are directed to the object and prints. Some items scan better than others, the objects tend to reflect more light the light, creating a more detailed and bright objects, due to refraction, which distorts the image. Data from the laser scanning session in the form of a cloud of points, a small collection of data points that can be used together to oppose.

Raw data from laser scanning can be a computer program is used instead of a cloud of 3D model. Since the laser scanner sees only what is visible to the scanner is common around the object, or rotate the object during the test to get a complete view of all sides and all angles. A computer program can sew the data and information, you can also add color, if desired.

Use one of the scanning laser in architecture and construction, which can be used to model laser scanning the environment and landscape, 3D models of the proposed structures and other activities. Laser scanning is also used to register objects that can be replicated, and make copies of objects of historical value. The ability of laser scanning the object and create a 3D model also allows the museum to share their collections around the world without compromising the protection of places, people can access a Web site museum that example, and to investigate the three dimensional models of objects of interest. Laser scanning is also used in the entertainment industry, where you can perform analysis for computer models to create digital effects. Forensic scientists can also use this technique to create models of crime, and laser scanning can be used for presentations, demonstrations, which are very detailed.

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