Allied Vision Technologies Pike Manual de Instruções descarregar pdf (Página 129)

Description of the data path

PIKE Technical Manual V4.0.0

129

To configure this feature in an advanced register: See Table 144: Shading

control register on page 293.

After the lens has been focused again the image below will be seen, but now

with a considerably more uniform gradient.

Note

• The SHDG_CTRL register should not be queried at very

short intervals. This is because each query delays the

generation of the shading image. An optimal interval

time is 500 ms.

Note

• The calculation of shading data is always carried out at

the current resolution setting. If the AOI is later larger

than the window in which correction data was calcu-

lated, none of the pixels lying outside are corrected.

• For Format_7 mode, it is advisable to generate the

shading image in the largest displayable frame format.

This ensures that any smaller AOIs are completely cov-

ered by the shading correction.

• The automatic generation of shading data can also be

enabled when image capture is already running. The

camera then pauses the running image capture for the

time needed for generation and resumes after genera-

tion is completed.

• Shading correction can be combined with the image

mirror and gamma functionality.

• Changing binning modes involves the generation of

new shading reference images due to a change in the

image size.

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Allied Vision Technologies Pike Manual de Instruções Página 129