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/***************************************************
Author : Yash S. Bhalgat
****************************************************
Usage :
1) box_filtered_image = imboxfilt3(input_img);
In this usage, the default filter size of 3x3 is used.
2) box_filtered_image = imboxfilt3(input_img, filter_height, filter_width);
Example :
img = imread("lena.jpg");
imshow(img);
box_filtered_img = imboxfilt3(img, 9, 9);
imshow(box_filtered_img);
***************************************************/
#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_imboxfilt3(char *fname, unsigned long fname_len)
{
SciErr sciErr;
int intErr = 0;
int iRows=0,iCols=0;
int *piAddr2 = NULL;
int *piAddr3 = NULL;
int i,j,k;
//Default filter size
double filter_height = 3;
double filter_width = 3;
//checking input argument
CheckInputArgument(pvApiCtx, 1, 3);
CheckOutputArgument(pvApiCtx, 1, 1) ;
int inputarg = *getNbInputArgument(pvApiCtx);
Mat image;
retrieveImage(image,1);
if(inputarg >= 2){
//for value of filter_height
sciErr = getVarAddressFromPosition(pvApiCtx,2,&piAddr2);
if (sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
intErr = getScalarDouble(pvApiCtx, piAddr2, &filter_height);
if(intErr)
return intErr;
//for value of filter_width
sciErr = getVarAddressFromPosition(pvApiCtx,3,&piAddr3);
if (sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
intErr = getScalarDouble(pvApiCtx, piAddr3, &filter_width);
if(intErr)
return intErr;
}
//taking the cases which can lead to an error
Mat filtered_image(image.rows,image.cols,image.type());
if(filter_height<0)
{
sciprint("Positive Value Required for Height. 3 value was used instead");
filter_height=3;
}
if(filter_width<0)
{
sciprint("Positive Value Required for Width. 3 value was used instead");
filter_width=3;
}
if((int)filter_height%2==0)
{
filter_height+=1;
sciprint("Odd Value Required for Height. %f value was used instead",&filter_height);
}
if((int)filter_width%2==0)
{
filter_width+=1;
sciprint("Odd Value Required for Width. %f value was used instead",&filter_width);
}
//temporary size variable, to use in function
Size sz(filter_height,filter_width);
//opencv function called
//if both filter_size is not given, default value of 3x3 is used
boxFilter(image,filtered_image, -1, sz);
//returning image
string tempstring = type2str(filtered_image.type());
char *checker;
checker = (char *)malloc(tempstring.size() + 1);
memcpy(checker, tempstring.c_str(), tempstring.size() + 1);
returnImage(checker,filtered_image,1);
free(checker);
//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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