>>...It interpolates lut values not image intensity values...
Here are a couple of more details:
1. ippiLUT_xxx functions perform intensity transformation of the source image using the LUT with Exact Mapping.
2. ippiLUT_Linear_xxx functions perform intensity transformation of the source image using the LUT with Linear Interpolation.
3. ippiLUT_Cubic_xxx functions perform intensity transformation of the source image using the LUT with Cubic Interpolation.
>>...It interpolates lut values not image intensity values...
Here are a couple of more details:
1. ippiLUT_xxx functions perform intensity transformation of the source image using the LUT with Exact Mapping.
2. ippiLUT_Linear_xxx functions perform intensity transformation of the source image using the LUT with Linear Interpolation.
3. ippiLUT_Cubic_xxx functions perform intensity transformation of the source image using the LUT with Cubic Interpolation.