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Active Vision System for 3D Product Inspection
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Автор:  san [ 26 серпня 2014, 23:46 ]
Тема повідомлення:  Active Vision System for 3D Product Inspection

Active Vision System for 3D Product Inspection
Learn how to construct three-dimensional vision applications by reviewing triangulation equations and measurement procedures.
http://e-ditionsbyfry.com/Olive/ODE/CTL ... w=document
Цитата:
The most evident limitation of a twodimensional vision system is its ability to move and rotate only in the X-Y plane. This has led to a demand for high quality, three-dimensional (3D) processing technology, the use of which is increasing. For engineers exploring the use of 3D inspection, there are now many different technologies available for creating 3D images.
The most important task or engineers to successfully create such an application for ndustrial use is to achieve a high measurement resoluion in all (x, y, z) directions. Depending on the shape and ize of the object and the disance between the object and he vision sensor, different methods of three-dimensional measurement, and diferent types of active vision ystems, can be used.
The vision system consists of a set of devices, which convert light and measurement data into information, with spatial and material attributes of the scene. These devices have photosensiive sensors (a camera with a lens which focuses images on a photosensitive element or the eye) and computational mechanisms (a computer) allowing information to be collected from the sensors. Humans can easily distinguish objects they see and are also able to recognize them in various light conditions and from different frames of reference. However, in the case of vision systems, the proper interpretation of a pixel value is a very difficult task. Additionally, the brightness of pixels (and thus of the image received) depends on several factors:

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