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authorshamikam2017-01-16 02:56:17 +0530
committershamikam2017-01-16 02:56:17 +0530
commita6df67e8bcd5159cde27556f4f6a315f8dc2215f (patch)
treee806e966b06a53388fb300d89534354b222c2cad /sci_gateway/cpp/opencv_rgb2ntsc.cpp
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+/* function-rgb2lab
+ Author :Tess Zacharias */
+#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 .95047; // Observer= 2°, Illuminant= D65
+ #define REF_Y 1.00000;
+ #define REF_Z 1.08883;
+struct Color
+{
+ float R,G,B,Y,I,Q;
+};
+Color rgb2ntsc(float R, float G, float B)
+{
+
+ float r=R/255.0;
+ float g=G/255.0;
+ float b=B/255.0;
+ float y = 0.299*r + 0.587*g + 0.114*b;
+ float i = 0.596*r -0.274 *g - 0.322 *b;
+ float q = 0.211*r - 0.523*g + 0.312 *b;
+
+
+ Color ntsc;
+ ntsc.Y= y;
+ ntsc.I= i;
+ ntsc.Q= q;
+ return ntsc;
+
+}
+
+int opencv_rgb2ntsc(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* piAddr2=NULL;
+ int* piAddr1=NULL;
+ int* piAddr3=NULL;
+ int* piaddr=NULL;
+ char *value=NULL;
+ int* piLen = NULL;
+ char **val;
+ int i,j;
+ int error;
+ Color out;
+ double check;
+ Mat img;
+ float R,G,B;
+ int *piAddrNew = NULL;
+ CheckOutputArgument(pvApiCtx,1,1);
+ int m=0;
+ retrieveImage(img,1);
+ double *r1,*g1,*b1;
+ r1=(double *)malloc(sizeof(double)*img.rows*img.cols);
+ g1=(double *)malloc(sizeof(double)*img.rows*img.cols);
+ b1=(double *)malloc(sizeof(double)*img.rows*img.cols);
+ for(int i=0;i<img.rows;i++)
+ {
+ for(int j=0;j<img.cols;j++)
+ {
+ Vec3b intensity = img.at<Vec3b>(i,j);
+ R= intensity.val[2];
+ G= intensity.val[1];
+ B= intensity.val[0];
+ out=rgb2ntsc(R,G,B);
+ r1[m]=out.Y;
+ g1[m]=out.I;
+ b1[m++]=out.Q;
+ }
+ }
+ //creating the list that will be passed to the Scilab enviroment
+ sciErr = createList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, 3, &piAddrNew);
+ if(sciErr.iErr)
+ {
+ printError(&sciErr, 0);
+ return 0;
+ }
+
+
+ //Adding the R value matrix to the list
+ //Syntax : createMatrixOfInteger32InList(void* _pvCtx, int _iVar, int* _piParent, int _iItemPos, int _iRows, int _iCols, const int* _piData)
+ sciErr = createMatrixOfDoubleInList(pvApiCtx, nbInputArgument(pvApiCtx)+1 , piAddrNew, 1, img.rows,img.cols, r1);
+ free(r1);
+ if(sciErr.iErr)
+ {
+ printError(&sciErr, 0);
+ return 0;
+ }
+
+ //Adding the G value matrix to the list
+ sciErr = createMatrixOfDoubleInList(pvApiCtx, nbInputArgument(pvApiCtx)+1 , piAddrNew, 2, img.rows, img.cols, g1);
+ free(g1);
+ if(sciErr.iErr)
+ {
+ printError(&sciErr, 0);
+ return 0;
+ }
+
+ //Adding the B value matrix to the list
+ sciErr = createMatrixOfDoubleInList(pvApiCtx, nbInputArgument(pvApiCtx)+1 , piAddrNew, 3, img.rows, img.cols, b1);
+ free(b1);
+ if(sciErr.iErr)
+ {
+ printError(&sciErr, 0);
+ return 0;
+ }
+
+ // free(checker);
+ AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1;
+ ReturnArguments(pvApiCtx);
+ return 0;
+}
+}