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/* ==================================================================== */
/* Author :Priyanka Hiranandani NIT Surat */
/* ==================================================================== */
/* overloaded function */
/* Syntax : return_matrix_3_xyz_values=lab2xyz(matrix_of_3_labvalues a) */
/* ==================================================================== */
/* ==================================================================== */
#include <numeric>
#include "opencv2/core/core.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/opencv.hpp"
#include <iostream>
#include<stdio.h>
#include <sciprint.h>
#include<string.h>
using namespace cv;
using namespace std;
extern "C"
{
#include "api_scilab.h"
#include "Scierror.h"
#include "BOOL.h"
#include <localization.h>
#include "../common.h"
#define REF_X 95.047; // Observer= 2°, Illuminant= D65
#define REF_Y 100.000;
#define REF_Z 108.883;
struct Color
{
float R,G,B,X,Y,Z,L,a,b;
};
Color lab2xyz1(float l, float a, float b)
{
float y = (l + 16) / 116;
float x = a / 500 + y;
float z = y - b / 200;
if(pow(y,3) > 0.008856)
{
y = pow(y,3);
}
else
{
y =(y-16/116)/7.787;
}
if (pow(x,3) > 0.008856)
{
x = pow(x,3);
}
else
{
x = (x-16/116)/7.787;
}
if (pow(z,3) > 0.008856)
{
z = pow(z,3);
}
else
{
z =(z-16/ 116 ) / 7.787;
}
Color xyz;
xyz.X= x * REF_X;
xyz.Y = y * REF_Y;
xyz.Z = z * REF_Z;
return xyz;
}
Color lab2xyz2(float l, float a, float b,char *s)
{
double REF_X1;
double REF_Y1;
double REF_Z1;
//if else condition for checking various input arguments and assign values accordingly
if(!strcmp(s,"a"))
{
REF_X1=1.0985;
REF_Y1= 1.0000;
REF_Z1=0.3558;
}
else if(!strcmp(s,"c"))
{
REF_X1=0.9807;
REF_Y1= 1.0000;
REF_Z1=1.1822;
}
else if(!strcmp(s,"d50"))
{
REF_X1=0.9642;
REF_Y1= 1.0000;
REF_Z1=0.8251;
}
else if(!strcmp(s,"d65"))
{
REF_X1=0.9504;
REF_Y1= 1.0000;
REF_Z1= 1.0888;
}
else if(!strcmp(s,"icc"))
{
REF_X1=0.962;
REF_Y1=1.000;
REF_Z1= 0.8249;
}
else if(!strcmp(s,"e"))
{
REF_X1=1.000;
REF_Y1=1.000;
REF_Z1=1.000;
}
float y = (l + 16) / 116;
float x = a / 500 + y;
float z = y - b / 200;
if (pow(y,3) > 0.008856)
{
y=pow(y,3);
}
else
{
y=(y-16/116)/7.787;
}
if(pow(x,3) > 0.008856)
{
x=pow(x,3);
}
else
{
x=(x-16/116)/7.787;
}
if (pow(z,3) > 0.008856)
{
z=pow(z,3);
}
else
{
z=(z-16/116)/7.787;
}
Color xyz;
xyz.X= x * REF_X1;
xyz.Y = y * REF_Y1;
xyz.Z = z * REF_Z1;
return xyz;
}
int lab2xyz(char *fname, unsigned long fname_len)
{
// Error management variable
SciErr sciErr;
//variable info
int iRows=0;
int iCols=0;
int piRows=0;
int piCols=0;
int* piAddr=NULL;
int* piAddr1=NULL;
int* piAddr3=NULL;
double *value=NULL;
int* piLen=NULL;
char **val;
int i,j;
int error;
Color out;
double check;
Mat img,dst;
float R,G,B;
int k=0;
int *piAddrNew = NULL;
double *pstDataR=NULL;
double *pstDataG=NULL;
double *pstDataB=NULL;
double *r,*g,*b;
int m=0;
//checking output argument
CheckOutputArgument(pvApiCtx,1,1);
//retrive address of the list
sciErr=getVarAddressFromPosition(pvApiCtx,1,&piAddr);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
//retrive the matrix of the R values
sciErr=getMatrixOfDoubleInList(pvApiCtx, piAddr, 1, &iRows, &iCols, &pstDataR);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
//retrive address of the list
sciErr = getVarAddressFromPosition(pvApiCtx,1,&piAddr);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
//retrive the matrix of the G values
sciErr = getMatrixOfDoubleInList(pvApiCtx, piAddr, 2, &iRows, &iCols, &pstDataG);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
//retrive address of the list
sciErr = getVarAddressFromPosition(pvApiCtx,1,&piAddr);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
//retrive the matrix of the B values
sciErr = getMatrixOfDoubleInList(pvApiCtx, piAddr, 3, &iRows, &iCols, &pstDataB);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
r=(double *)malloc(sizeof(double)*iRows*iCols);
g=(double *)malloc(sizeof(double)*iRows*iCols);
b=(double *)malloc(sizeof(double)*iRows*iCols);
for(int i=0;i<iRows;i++)
{
for(int j=0;j<iCols;j++)
{
R=(pstDataR[k]);
G=(pstDataG[k]);
B= (pstDataB[k++]);
out=lab2xyz1(R,G,B);
r[m]=(out.X)/100;
g[m]=(out.Y)/100;
b[m++]=(out.Z)/100;
}
}
sciErr = createList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, 3, &piAddrNew);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
//Adding the R value matrix to the list
sciErr = createMatrixOfDoubleInList(pvApiCtx, nbInputArgument(pvApiCtx)+1 , piAddrNew, 1, iRows,iCols, r);
free(r);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
//Adding the G value matrix to the list
sciErr = createMatrixOfDoubleInList(pvApiCtx, nbInputArgument(pvApiCtx)+1 , piAddrNew, 2, iRows, iCols, g);
free(g);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
//Adding the B value matrix to the list
sciErr = createMatrixOfDoubleInList(pvApiCtx, nbInputArgument(pvApiCtx)+1 , piAddrNew, 3, iRows, iCols, b);
free(b);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1;
ReturnArguments(pvApiCtx);
return 0;
}
}
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