Allied Vision Technologies AVT Stingray Manual de Instruções descarregar pdf (Página 101)

Description of the data path

STINGRAY Technical Manual V2.2.0

100

Finally, the calculated correction values can be read from the

WHITE_BALANCE register 80Ch.

Automatic white balance

The auto white balance feature continuously optimizes the color characteris-

tics of the image.

For the white balance algorithm the whole image or a subset of it is used.

AUTOFNC_AOI affects the auto shutter, auto gain and auto white balance fea-

tures and is independent of the Format_7 AOI settings. If this feature is

switched off the work area position and size will follow the current active

image size.

Within this area, the R-G-B component values of the samples are added and

used as actual values for the feedback.

The following drawing illustrates the AUTOFNC_AOI settings in greater detail.

Note

Configuration

To set position and size of the control area

(Auto_Function_AOI) in an advanced register: see Table 132:

Advanced register: Autofunction AOI on page 275.

Figure 55: AUTOFNC_AOI positioning

AF_AREA_SIZE: Height: n x 4

AOI: Y-size

AOI: X-size

AF_AREA_SIZE: Width: n x 4

0,0

AF_AREA_POSITION: Left,Top

Sampling grid for Auto-Function

1 2 ... 96 97 98 99 100 101 102 103 104 105 106 ... 308 309

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Allied Vision Technologies AVT Stingray Manual de Instruções Página 101