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Diffstat (limited to 'sci_gateway1/cpp/opencv_findContours.cpp')
| -rw-r--r-- | sci_gateway1/cpp/opencv_findContours.cpp | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/sci_gateway1/cpp/opencv_findContours.cpp b/sci_gateway1/cpp/opencv_findContours.cpp new file mode 100644 index 0000000..05da2b3 --- /dev/null +++ b/sci_gateway1/cpp/opencv_findContours.cpp @@ -0,0 +1,199 @@ +/******************************************************** + Author: Abhilasha Sancheti & Sukul Bagai +********************************************************* + contours = findcontours(input_image(after canny is applied on it), mode, method, point_x, point_y) +********************************************************/ + +#include <numeric> +#include "opencv2/core/core.hpp" +#include "opencv2/highgui/highgui.hpp" +#include "opencv2/opencv.hpp" +#include <iostream> +using namespace cv; +using namespace std; +extern "C" +{ + #include "api_scilab.h" + #include "Scierror.h" + #include "BOOL.h" + #include <localization.h> + #include <sciprint.h> + #include "../common.h" + + int opencv_findContours(char *fname, unsigned long fname_len) + { + + SciErr sciErr; + int intErr=0; + int iRows=0,iCols=0; + int *piLen2=NULL; + int *piLen3 = NULL; + int *piAddrNew = NULL; + int *piAddr2 = NULL; + int *piAddr3 = NULL; + int *piAddr4 = NULL; + int *piAddr5 = NULL; + int i,j,k, findmode , findmethod; + char **find_method=NULL , **mode = NULL; + double x,y; + + + //checking input argument + CheckInputArgument(pvApiCtx, 5, 5); + CheckOutputArgument(pvApiCtx, 1, 1) ; + + + Mat src; + retrieveImage(src,1); + + // for mode parameter of findContours + sciErr = getVarAddressFromPosition(pvApiCtx,2,&piAddr2); + //checking for error if any + if (sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + sciErr = getMatrixOfString(pvApiCtx, piAddr2, &iRows, &iCols, NULL, NULL); + piLen2 = (int*)malloc(sizeof(int) * iRows * iCols); + //second call to retrieve length of each string of first argument + sciErr = getMatrixOfString(pvApiCtx, piAddr2, &iRows, &iCols, piLen2, NULL); + if(sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + mode= (char**)malloc(sizeof(char*) * iRows * iCols); + for(i = 0 ; i < iRows * iCols ; i++) + { + mode[i] = (char*)malloc(sizeof(char) * (piLen2[i] + 1));//+ 1 for null termination + } + //third call to retrieve data of each string of first argument + sciErr = getMatrixOfString(pvApiCtx, piAddr2, &iRows, &iCols, piLen2, mode); + if(sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + + // for method parameter of findContours + sciErr = getVarAddressFromPosition(pvApiCtx,3,&piAddr3); + //checking for error if any + if (sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + sciErr = getMatrixOfString(pvApiCtx, piAddr3, &iRows, &iCols, NULL, NULL); + piLen3 = (int*)malloc(sizeof(int) * iRows * iCols); + //second call to retrieve length of each string of first argument + sciErr = getMatrixOfString(pvApiCtx, piAddr3, &iRows, &iCols, piLen3, NULL); + if(sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + find_method= (char**)malloc(sizeof(char*) * iRows * iCols); + for(i = 0 ; i < iRows * iCols ; i++) + { + find_method[i] = (char*)malloc(sizeof(char) * (piLen3[i] + 1));//+ 1 for null termination + } + //third call to retrieve data of each string of first argument + sciErr = getMatrixOfString(pvApiCtx, piAddr3, &iRows, &iCols, piLen3, find_method); + if(sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + //toget the x coordinate of point parameter of findcontours + sciErr = getVarAddressFromPosition(pvApiCtx,4,&piAddr4); + if (sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + intErr = getScalarDouble(pvApiCtx, piAddr4,&x); + if(intErr) + return intErr; + + //toget the y coordinate of point parameter of findcontours + sciErr = getVarAddressFromPosition(pvApiCtx,5,&piAddr5); + if (sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + intErr = getScalarDouble(pvApiCtx, piAddr5 ,&y); + if(intErr) + return intErr; + + //to set hte mode for findcontour + if (strcmp(mode[0],"CV_RETR_EXTERNAL")==0) + findmode = CV_RETR_EXTERNAL; + else if (strcmp(mode[0],"CV_RETR_LIST")==0) + findmode = CV_RETR_LIST; + else if (strcmp(mode[0],"CV_RETR_CCOMP")==0) + findmode = CV_RETR_CCOMP; + else if (strcmp(mode[0],"CV_RETR_TREE")==0) + findmode = CV_RETR_TREE; + else + { + findmode = CV_RETR_TREE; + sciprint("wrong mode given , using CV_RETR_TREE instead"); + } + // to set the method for findContours + if (strcmp(find_method[0],"CV_CHAIN_APPROX_NONE")==0) + findmethod = CV_CHAIN_APPROX_NONE; + else if (strcmp( find_method[0],"CV_CHAIN_APPROX_SIMPLE")==0) + findmethod = CV_CHAIN_APPROX_SIMPLE; + else if (strcmp(find_method[0],"CV_CHAIN_APPROX_TC89_L1")==0) + findmethod = CV_CHAIN_APPROX_TC89_L1; + else if (strcmp(find_method[0],"CV_CHAIN_APPROX_TC89_KCOS")==0) + findmethod = CV_CHAIN_APPROX_TC89_KCOS; + else + { + findmethod = CV_CHAIN_APPROX_SIMPLE; + sciprint("wrong method given , using CV_CHAIN_APPROX_SIMPLE instead"); + } + Point pt(x,y); + /// Find contours + vector<vector<Point> > contours; + vector<Vec4i> hierarchy; + findContours( src, contours, hierarchy, findmode, findmethod, pt); + + //Assigning the list as the Output Variable + sciErr = createList(pvApiCtx, nbInputArgument(pvApiCtx) + 1, contours.size(), &piAddrNew); + if(sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + + for(i=0;i<contours.size();i++) + { + double *arr = (double *)malloc(sizeof(double) * 2 * contours[i].size()); + + for(j=0;j<contours[i].size();j++) + { + *(arr + j*2 + 0) = contours[i][j].x; + *(arr + j*2 + 1) = contours[i][j].y; + } + + sciErr = createMatrixOfDoubleInList(pvApiCtx, nbInputArgument(pvApiCtx)+1 , piAddrNew, i+1, contours[i].size(), 2, arr); + free(arr); + if(sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + } + + AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1; + //Returning the Output Variables as arguments to the Scilab environment + ReturnArguments(pvApiCtx); + return 0; + + + } + +} |