Camera Active Area
The Camera Active Area represents the rectangular array of pixels containing active video that are delivered by the camera to the frame grabber.
Hactive_Px Limits
For both the area-scan and line-scan cameras, the MultiCam parameter Hactive_Px represents the number of columns of the Camera Active Area.
The following restrictions apply to the value of Hactive_Px:
- The width of the Camera Active Area may not exceed 65536 pixels.
- The width of the Camera Active Area must be a multiple of the number of taps along the X direction.
- The width of a region of the Camera Active Area as defined in the TapGeometry nomenclature may not be lower than 16 pixels.
Vactive_Ln Limits
For area-scan cameras only, the MultiCam parameter Vactive_Ln represents the number of rows of the Camera Active Area.
The following restrictions apply to the value of Vactive_Ln:
- The height of the Camera Active Area may not exceed 65535 rows.
- The height of the Camera Active Area must be a multiple of the number of taps along the Y direction.
- The height of a region of the Camera Active Area as defined in the TapGeometry nomenclature may not be lower than 1 row.
The following table defines explicitly the limits of Vactive_Ln for all possible combinations of:
- The number of regions along Y-direction (#YRegions)
- The number of taps along Y-direction (#YTaps)
#YRegions |
# YTaps |
TapGeometry |
Vactive_Ln value range |
1 |
1 |
1X-1Y |
Any integer value in the range {1…65535} |
1 |
2 |
1X-1Y2 |
Any integer value multiple of 2 in the range {2…65534} |
2 |
2 |
1X-2YE |
Any integer value multiple of 2 in the range {2…65534} |
Note. Only one sample value of the TapGeometry parameter is listed for each case.