hay i am new to opencv while i am reading sequence of images and copying it into array i can able to copy first image but for the further its giving exception.please help me out.
here is the exception i am getting. OpenCV Error: Image step is wrong () in cvSetData, file /build/buildd/opencv-2.4.8+dfsg1/modules/core/src/array.cpp, line 928 terminate called after throwing an instance of 'cv::Exception'
here is my program.i have 4 images in my images folder.here i am trying to calculate the histogram.
/** * @file compareHist_Demo.cpp * @brief Sample code to use the function compareHist * @author OpenCV team */
include "opencv2/highgui/highgui.hpp"
include "opencv2/imgproc/imgproc.hpp"
include <iostream>
include <stdio.h>
using namespace std; using namespace cv;
/* * @function main */ int main(int argc, char* argv) {
Mat src_base[4];
Mat hsv_base[4];
double base_base[4];
MatND hist_base[4];
Mat image;
/// Load three images with different environment settings
/* if (argc < 4) { printf( "** Error. Usage: ./compareHist_Demo <image_settings0> <image_setting1> <image_settings2>\n"); return -1; } */ VideoCapture sequence("/home/adarsh/MOUTH/mouth_%d.jpg"); if (!sequence.isOpened()) { cerr << "Failed to open Image Sequence!\n" << endl; return 1; }
for (int i = 4; i < 4; i++) {
sequence >> image;
//src_base[i] = imread(argv[i], 1);
src_base[i]=image;
cvtColor( src_base[i], hsv_base[i], COLOR_BGR2HSV );
}
/// Using 50 bins for hue and 60 for saturation
int h_bins = 50;
int s_bins = 60;
int histSize[] = { h_bins, s_bins };
// hue varies from 0 to 179, saturation from 0 to 255
float h_ranges[] = { 0, 180 };
float s_ranges[] = { 0, 256 };
const float* ranges[] = { h_ranges, s_ranges };
// Use the o-th and 1-st channels
int channels[] = { 0, 1 };
/// Histograms
for (int j = 0; j < 4; j++) {
calcHist(&hsv_base[j], 1, channels, Mat(), hist_base[j], 2, histSize,
ranges, true, false);
normalize(hist_base[j], hist_base[j], 0, 1, NORM_MINMAX, -1, Mat());
}
/// Apply the histogram comparison methods
for (int k = 0; k < 1; k++) {
int compare_method = k;
base_base[0] = compareHist(hist_base[0], hist_base[0], compare_method);
base_base[1] = compareHist(hist_base[0], hist_base[1], compare_method);
base_base[2] = compareHist(hist_base[0], hist_base[2], compare_method);
base_base[3] = compareHist(hist_base[0], hist_base[3], compare_method);
printf("The values are\n Method [%d] Perfect, Base-Test(1), Base-Test(2), Base-Test(3), : %f, %f, %f, %f\n",
k,base_base[0], base_base[1], base_base[2], base_base[3]);
}
printf("Done \n");
return 0;
}
