Intensification, image

It is particularly in the serial inspection of castings, that radioscopy constitutes state-of-the-art when applied in conjunction with systems for image intensification, digital image processing and automatic image evaluation. For the examination of welds, however, standardization is still non-existent, thus rendering more difficult the application of this inspection technique.As a consequence the approval procedures of the respective supervisory or certification boards are often complicated and of necessity set up for each individual case. 

M.L. Perl L.W. Jones, HSP 5, 98 (1962) Very-High-Gain Image Intensifier Systems 5a) R.A. Chippendale J.R. Folkes, HSP 5, 104 (1962) Electronic Image Intensification 6a) Z. Pressman, HSP 5, 80 (1962) High-Speed Films with Vigorous Development 7a) M.Clouppeau, HSP 5, 240 (1962) Optical Contrasted ... 

Low-level visible light that is naturally present may be amplified and presented directly to the viewer s eye. (Light in the near-infrared part of the electromagnetic spectrum [ 0.77-1.0 microns], either naturally present or supplied as illumination, may also be amplified and its pattern translated into a visible-light pattern for the viewer s benefit.) This technique is termed image intensification. 

Image intensification is the method used for the devices termed night-vision scopes, which exist in a variety of forms that can mounted on weapons or vehicles or worn as goggles by an individual. Image-intensification devices have been used by technologically advanced mil-... 

Format. Larger format image intensif iers, e.g., 25 and 40 mm in diameter, are more available and affordable than SITs. Such intensifiers can be optically coupled to an SIT through a format reducing optical-fiber coupler, e.g., 40 to 18 mm (SIT standard format). This method will allow a wider spectral coverage with little, if any, loss in resolution. 

As a result, self-scanned solid-state OIDs with and without MCP image intensifications have rapidly replaced OIDs based on vidicon (second generation) television pickup tube technology. Moreover, indications are that in the near future, the progress in silicon-based LSI devices will expand to more exotic materials such as InSb, InAs, HgCdTe, and PbSnTe. This expansion will allow for the development of IR-sensitive OIDs that could eventually replace mechanical multiplex detection systems based on mathematical transformations such as Fourier and Hadamard. 

Record the fluorescent images using a low-light camera of preferably cooled CCD image intensification camera see Note 11). 

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