imgSessionSetUserLUT8bit
Usage
rval imgSessionSetUserLUT8bit(SESSION_ID sid, uInt32 lutType, uInt8* lut);
Purpose
Downloads a custom 8-bit lookup table (LUT) to the image acquisition device. Call this function at least once with the default constant (IMG_LUT_TYPE_DEFAULT) to initialize all LUTs, or make successive calls using different constants for each LUT. You also can override the default LUT on a per-tap basis. This function works with analog or digital image acquisition devices acquiring from an 8-bit camera.
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Note User LUTs are not supported on the NI 1405, NI 1426, NI 1427, NI 1429, or the NI 1430. |
Parameters
| Name | Type | Direction |
| sid | SESSION_ID | input |
| lutType | uInt32 | input |
| lut | uInt8* | input |
| rval | Int32 | output |
Parameter Discussion
sid: valid SESSION_ID
lutType: type of LUT to be written. The following are valid values for this parameter:
| IMG_LUT_TYPE_DEFAULT | Default LUT used to initialize all LUTs. |
| IMG_LUT_TYPE_RED | Red channel LUT for RGB digital cameras or the PCI/PXI-1411. |
| IMG_LUT_TYPE_GREEN | Green channel LUT for RGB digital cameras or the PCI/PXI-1411. |
| IMG_LUT_TYPE_BLUE | Blue channel LUT for RGB digital cameras or the PCI/PXI-1411. |
| IMG_LUT_TYPE_TAP0 | Tap 0 LUT for digital devices. |
| IMG_LUT_TYPE_TAP1 | Tap 1 LUT for digital devices. |
| IMG_LUT_TYPE_TAP2 | Tap 2 LUT for digital devices. |
| IMG_LUT_TYPE_TAP3 | Tap 3 LUT for digital devices. |
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Note IMG_LUT_TYPE_RED, IMG_LUT_TYPE_GREEN, and IMG_LUT_TYPE_BLUE are valid only for color cameras. |
lut: array that contains the LUT to be downloaded to the image acquisition device. This array must contain 256 elements.
Return Value
This function returns 0 on success. On failure, this function returns an error code. For information about the error code, call imgShowError.