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/********************************************************
Author: Vinay Bhat
********************************************************
Usage: return_image = imhmin(input_image, h)
Example:
im = imhmin(image, 80)
********************************************************/
#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"
void imhmin_imreconstruct(Mat, Mat, Mat&);
int opencv_imhmin(char *fname, unsigned long fname_len)
{
SciErr sciErr;
int intErr = 0;
int *piAddr = NULL;
double h;
//checking input argument
CheckInputArgument(pvApiCtx, 2, 2);
CheckOutputArgument(pvApiCtx, 1, 1) ;
// Get the input image from the Scilab environment
Mat image;
retrieveImage(image, 1);
// Get the address of 2nd argument, the H-Minima transform scalar
sciErr = getVarAddressFromPosition(pvApiCtx, 2, &piAddr);
if (sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
// Get the H-Minima transform scalar
intErr = getScalarDouble(pvApiCtx, piAddr, &h);
if(intErr)
{
return intErr;
}
if (h < 0)
{
sciprint("Please enter a nonnegative scalar for H-minima transform.\n");
return 0;
}
Mat gray_image, m, dst;
cvtColor(image, gray_image, CV_BGR2GRAY);
min((gray_image+h), 255, m);
imhmin_imreconstruct(gray_image, m, dst);
string tempstring = type2str(dst.type());
char *checker;
checker = (char *)malloc(tempstring.size() + 1);
memcpy(checker, tempstring.c_str(), tempstring.size() + 1);
returnImage(checker, dst, 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;
}
void imhmin_imreconstruct(Mat g, Mat f, Mat& dest)
{
Mat m0, m1, m;
m1 = f;
do {
m0 = m1.clone();
erode(m0, m, Mat());
max(g, m, m1);
} while(countNonZero(m1 != m0) != 0);
dest = m1.clone();
}
/* ==================================================================== */
}
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