Example

#include "ippcore.h"
#include "ippi.h"
#include <iostream>

void func_LUTPalette()
{
    IppStatus status;
    Ipp8u pSrc[8 * 8];
    int srcStep = 8 * sizeof(Ipp8u);
    IppiSize roiSize = { 8, 8 };

    Ipp32u pDst[8 * 8];
    int dstStep = 8 * sizeof(Ipp32f);
    int nBitSize = 3;
    Ipp32u pTable[8] = { 1, 2, 3, 4, 5, 6, 7, 8 };

    status = ippiImageJaehne_8u_C1R(pSrc, srcStep, roiSize);
    
    std::cout << "pSrc:\n";
    for (int row = 0; row < roiSize.height; row++) {
        for (int col = 0; col < roiSize.width; col++) {
            std::cout << (int)pSrc[roiSize.width * row + col] << "\t";
        }
        std::cout << "\n";
    }

    status = ippiLUTPalette_8u32u_C1R(pSrc, srcStep, pDst, dstStep, roiSize, pTable, nBitSize);
    
    std::cout << "pDst:\n";
    for (int row = 0; row < roiSize.height; row++) {
        for (int col = 0; col < roiSize.width; col++) {
            std::cout << pDst[roiSize.width * row + col] << "\t";
        }
        std::cout << "\n";
    }
}

pSrc:
1 68 165 209 209 165 68 1
68 209 255 250 250 255 209 68
165 255 227 188 188 227 255 165
209 250 188 141 141 188 250 209
209 250 188 141 141 188 250 209
165 255 227 188 188 227 255 165
68 209 255 250 250 255 209 68
1 68 165 209 209 165 68 1


pDst:
2 5 6 2 2 6 5 2
5 2 8 3 3 8 2 5
6 8 4 5 5 4 8 6
2 3 5 6 6 5 3 2
2 3 5 6 6 5 3 2
6 8 4 5 5 4 8 6
5 2 8 3 3 8 2 5
2 5 6 2 2 6 5 2