Wuhan Guide IR136 Manual do Utilizador descarregar pdf (Página 83)

Thermografie in der Theorie und Praxis (INTERNET: www.irPOD.net / e-MAIL: [email protected] ) © Bernd Schindel 2007

Seite 83 von 88

Saturation

The ratio of pure color to washed out white in the display of a color. 100% saturation is pure color. 0%

saturation is pure white, at whatever intensity is encoded in the color.

Scale Factor, Scaling

A factor used to adjust the gain of an object parameter. Normally used in Temperature range adjustment,

the gain of the amplifiers is scaled until the desired temperature range is displayed in full contrast from

black to white. The units associated with a reading is a temperature scale (F, C, K, R).

Scale Sensitivity

The minimum adjustment allowed in the system per intensity level. A system is normally configured so that

the operator can set a scale sensitivity greater than the system sensitivity. If the NET of a system were

0.5*C, the scale sensitivity might be O.IOC or .050C to allow enough signal for offline image improvement

features such as averaging to reduce the noise level.

Scan Conversion

The reformatting of data, usually image data from one standard to another. In the case of infrared, the

sensor output is not compatible in either time nor number of lines nor number of resolution elements to

television. The sensor output must be scan converted into a television format in the image processor.

Scan Efficiency

The ratio of active scan time to total scan time. Can be expressed as a function of the ratio of two angles

also. Normal scan efficiencies with rotating polygons can be from 25% to 60% (with re-imaging optics).

Normal scan efficiencies with galvanometer mirrors can be as high as 90%.

Sensitivity

A measure of the minimum amplitude of input signal change to which an instrument will respond. This is a

measurement of thermal resolution.

Sensor

The component which converts radiation into electrical signals. Can be used to refer to the detector

specifically, the imager, or the entire system.

1 2 ... 78 79 80 81 82 83 84 85 86 87 88

Sem comentários

Wuhan Guide IR136 Manual do Utilizador Página 83