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Diffstat (limited to 'sci_gateway1/cpp/opencv_GeometricShearer.cpp')
| -rw-r--r-- | sci_gateway1/cpp/opencv_GeometricShearer.cpp | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/sci_gateway1/cpp/opencv_GeometricShearer.cpp b/sci_gateway1/cpp/opencv_GeometricShearer.cpp new file mode 100644 index 0000000..382de19 --- /dev/null +++ b/sci_gateway1/cpp/opencv_GeometricShearer.cpp @@ -0,0 +1,178 @@ +/******************************************************** +Author: Diwakar Bhardwaj +********************************************************* +Usage :return_image=GeometricShearer(input_image,'direction',value) +value is the amount want to shear the image in given direction +********************************************************/ + +#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_GeometricShearer(char *fname, unsigned long fname_len) + { + SciErr sciErr; + int intErr = 0; + int iRows=0,iCols=0; + int *piAddr = NULL; + int *piAddrNew = NULL; + int *piAddr2 = NULL; + int *piAddr3 = NULL; + int *piAddr4 = NULL; + int *piLen = NULL; + char **direction = NULL; + int i,j,k; + double alpha, beta,x,n,value; + + + + //checking input argument + CheckInputArgument(pvApiCtx,3,3); + CheckOutputArgument(pvApiCtx, 1, 1) ; + Mat image,new_image; + + retrieveImage(image, 1); + + sciErr = getVarAddressFromPosition(pvApiCtx,2, &piAddr2); + + if (sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + sciErr = getMatrixOfString(pvApiCtx, piAddr2, &iRows, &iCols, NULL, NULL); + if(sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + piLen = (int*)malloc(sizeof(int) * iRows * iCols); + //second call to retrieve length of each string + sciErr = getMatrixOfString(pvApiCtx, piAddr2, &iRows, &iCols, piLen, NULL); + if(sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + direction = (char**)malloc(sizeof(char*) * iRows * iCols); + for(i = 0 ; i < iRows * iCols ; i++) + { + direction[i] = (char*)malloc(sizeof(char) * (piLen[i] + 1));//+ 1 for null termination + } + //third call to retrieve data + sciErr = getMatrixOfString(pvApiCtx, piAddr2, &iRows, &iCols, piLen, direction); + if(sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + + sciErr = getVarAddressFromPosition(pvApiCtx,3,&piAddr3); + if (sciErr.iErr) + { + printError(&sciErr, 0); + return 0; + } + intErr = getScalarDouble(pvApiCtx, piAddr3 ,&value); + if(intErr) + return intErr; + + int r1, c1; // tranformed point + int rows, cols; // original image rows and columns + rows = image.rows; + cols = image.cols; + if(strcmp(direction[0], "Horizontal") == 0) + { + double Bx = value; + double By = 0; + + int maxXOffset = abs(cols * Bx); + int maxYOffset = abs(rows * By); + + Mat out = Mat::ones(image.rows+maxYOffset, image.cols+maxXOffset, image.type()); + + for(int r = 0; r < out.rows; r++) + { + for(int c = 0; c < out.cols; c++) + { + r1 = r + c * By - maxYOffset; + c1 = r * Bx + c - maxXOffset; + + if(r1 >= 0 && r1 <= rows && c1 >= 0 && c1 <= cols) + { + out.at<uchar>(r, c) = image.at<uchar>(r1, c1); + } + + } + } + int temp = nbInputArgument(pvApiCtx) + 1; + string tempstring = type2str(out.type()); + char *checker; + checker = (char *)malloc(tempstring.size() + 1); + memcpy(checker, tempstring.c_str(), tempstring.size() + 1); + returnImage(checker,out,1); + free(checker); + } + else if(strcmp(direction[0], "Vertical") == 0) + { + double Bx = 0; + double By = value; + + int maxXOffset = abs(cols * Bx); + int maxYOffset = abs(rows * By); + + Mat out = Mat::ones(image.rows+maxYOffset, image.cols+maxXOffset, image.type()); + + for(int r = 0; r < out.rows; r++) + { + for(int c = 0; c < out.cols; c++) + { + r1 = r + c * By - maxYOffset; + c1 = r * Bx + c - maxXOffset; + + if(r1 >= 0 && r1 <= rows && c1 >= 0 && c1 <= cols) + { + out.at<uchar>(r, c) = image.at<uchar>(r1, c1); + } + + } + } + int temp = nbInputArgument(pvApiCtx) + 1; + string tempstring = type2str(out.type()); + char *checker; + checker = (char *)malloc(tempstring.size() + 1); + memcpy(checker, tempstring.c_str(), tempstring.size() + 1); + returnImage(checker,out,1); + free(checker); + + } + else + { + sciprint("Not valid 2nd argument"); + } + + + + + //Assigning the list as the Output Variable + AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1; + //Returning the Output Variables as arguments to the Scilab environment + ReturnArguments(pvApiCtx); + return 0; + + } +/* ==================================================================== */ +}
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