LUT Definition Methods
Grablink Quickpack CFA provides four LUT definition methods: RESPONSE_CONTROL, EMPHASIS, THRESHOLD, and TABLE selectable via LUT_Method.
Three LUT definition methods: RESPONSE_CONTROL, EMPHASIS, and THRESHOLD are parametric methods using float collection parameters of dimension 4. The indexes of the collection members are assigned according following convention. The default LUT definition method is RESPONSE_CONTROL.
LUT index
Component |
RED |
GREEN |
BLUE |
LUMINANCE |
Index |
0 |
1 |
2 |
3 |
Parameters range for RESPONSE_CONTROL
There are four collection parameters when you assign RESPONSE_CONTROL to LUT_Method: LUT_Contrast, LUT_Brightness, LUT_Visibility, and LUT_Negative. The parameters range is specified in following table.
Parameters range for RESPONSE_CONTROL
Parameter |
Minimal/first value |
Maximal/second value |
Default value |
LUT_Contrast |
0.0 |
2.0 |
1.0 |
LUT_Brightness |
1.0 |
1.0 |
0.0 |
LUT_Visibility |
0.0 |
1.0 |
0.0 |
LUT_Negative |
FALSE |
TRUE |
FALSE |
Parameters range for EMPHASIS
There are two collection parameters when you assign EMPHASIS to LUT_Method: LUT_Emphasis and LUT_Negative. The parameters range is specified in following table.
Parameters range for EMPHASIS
Parameter |
Minimal/first value |
Maximal/second value |
Default value |
LUT_Emphasis |
1.0 |
1.0 |
0.0 |
LUT_Negative |
FALSE |
TRUE |
FALSE |
Parameters range for THRESHOLD
There are five collection parameters when you assign THRESHOLD to LUT_Method: LUT_SlicingLevel, LUT_SlicingBand, LUT_LightResponse, LUT_BandResponse and LUT_DarkResponse. The parameters range is specified in following table.
Parameters range for THRESHOLD
Parameter |
Minimal/first value |
Maximal/second value |
Default value |
LUT_SlicingLevel |
0.0 |
1.0 |
0.50 |
LUT_SlicingBand |
0.0 |
1.0 |
0.50 |
LUT_LightResponse |
0.0 |
1.0 |
0.75 |
LUT_BandResponse |
0.0 |
1.0 |
0.50 |
LUT_DarkResponse |
0.0 |
1.0 |
0.25 |
Parameters range for TABLE
When you assign TABLE to LUT_Method, LUT_Table specifies the handle of the surface containing the LUT data. The designated surface is composed with four planes, each containing 216 32-bit words. Refer to the above LUT index table for the plane numbering convention.