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/********************************************************
Author: Vinay Bhat
********************************************************
Usage: return_image = imfill(image)
return_image = imfill(image, 'holes')
return_image = imfill(image, points)
Example:
im = imfill(image, [1 1; 10 10; 11 12])
********************************************************/
#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 imfill_imreconstruct(Mat, Mat, Mat&);
int opencv_imfill(char *fname, unsigned long fname_len)
{
SciErr sciErr;
int intErr = 0;
int *piAddr = NULL;
int i, j;
double maxVal;
int iRet;
int iRows, iCols;
double *pstData = NULL;
//checking input argument
CheckInputArgument(pvApiCtx, 1, 2);
CheckOutputArgument(pvApiCtx, 1, 1);
// Get the input image from the Scilab environment
Mat image, dst;
retrieveImage(image, 1);
if (nbInputArgument(pvApiCtx) == 2)
{
sciErr = getVarAddressFromPosition(pvApiCtx, 2, &piAddr);
if (sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
if (image.type() != CV_8UC1)
{
Mat temp;
temp = image.clone();
cvtColor(temp, image, CV_BGR2GRAY);
}
if(isStringType(pvApiCtx, piAddr))
{
char* pstData = NULL;
iRet = getAllocatedSingleString(pvApiCtx, piAddr, &pstData);
if(iRet)
{
freeAllocatedSingleString(pstData);
return iRet;
}
if (strcmp(pstData, "holes") == 0)
{
freeAllocatedSingleString(pstData);
// Floodfill from point (0, 0)
Mat im_floodfill = image.clone();
floodFill(im_floodfill, Point(0,0), Scalar(255));
// Invert floodfilled image
Mat im_floodfill_inv;
bitwise_not(im_floodfill, im_floodfill_inv);
// Combine the two images to get the foreground.
Mat dst2 = (image | im_floodfill_inv);
erode(dst2, dst, Mat());
}
else
{
sciprint("Option not identified. Maybe you meant 'holes'.");
return 0;
}
}
else
{
// Get the points list in the form of a matrix
// No. of columns = 2
// No. of rows = No. of points
sciErr = getMatrixOfDouble(pvApiCtx, piAddr, &iRows, &iCols, &pstData);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
if (iCols != 2)
{
sciprint("Please enter a valid column and row index.");
return 0;
}
for (i = 0; i < iRows*iCols; i += iCols)
{
if (pstData[i] < 0 || pstData[i+1] < 0)
{
sciprint("Coordinates cannot be negative.\n");
return 0;
}
else
floodFill(image, Point(pstData[i], pstData[i+1]), Scalar(255));
}
dst = image.clone();
}
}
else
{
Mat gray_image;
cvtColor(image, gray_image, CV_BGR2GRAY);
minMaxLoc(gray_image, NULL, &maxVal, NULL, NULL);
Mat marker = Mat(gray_image.size(), gray_image.type());
marker = Scalar::all(maxVal);
for (i = 0; (i == 0 || i == marker.cols-1); i += (marker.cols - 1))
{
for (j = 0; j < marker.rows; j++)
{
marker.at<uchar>(i,j) = gray_image.at<uchar>(i,j);
}
}
for (i = 1; i < marker.cols-1; i++)
{
for (j = 0; (j == 0 || j == marker.rows-1); j += (marker.rows - 1))
{
marker.at<uchar>(i,j) = gray_image.at<uchar>(i,j);
}
}
imfill_imreconstruct(gray_image, marker, 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 imfill_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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