I have a text file which consist of several values. These values represent distance from origin to any point in the triangle. How can I create histogram from these values? Is there any functions in OpenCV which can create histogram from these values?
Below my sample values are given:
..........................
3.4 1.2 6.9 0.2 5.1 2.9
........................
I have a text file which consist of several values. These values represent distance from origin to any point in the triangle. How can I create histogram from these values? Is there any functions in OpenCV which can create histogram from these values? Below my sample values are given:
..........................
3.4 1.2 6.9 0.2 5.1 2.9
........................
I am doing a project, which requires me to create a program which would calibrate the camera. The code is below.
#include<opencvcv.h>
#include<opencvhighgui.h>
#include<stdlib.h>
#include<stdio.h>
#include<vector>
using namespace cv;
int main() {
int numBoards = 0;
[Code] ....
I am a beginner to opencv.
I cant get with part of it is wrong, i want to sum every row, too.
// Color Number.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include<conio.h>
#include<iostream>
[Code].....
Can I create 1 variable that accept any type? And can I give it the NULL value too?
View 14 Replies View RelatedI am trying to run an OpenCV program from command line, but it gave error like "The program can`t start because opencv_220d.dll is missing from your computer." Try reinstalling the program to fix this problem. I am using Windows 7 & Microsoft VC++ 2010. How can I run the program?
View 3 Replies View RelatedI have a C++ app that uses OpenCV. Currently i am statically linking the OpenCV libs into my app. This is adding an extra overhead of 6+ MB.
i would like to remove some of the features that i am not using in OpenCV. The features am using are,
Capture frames from Webcam.
Face detection.
Image formats (JPEG, PNG).
Image rotation & resizing.
Is it possible to remove other features and trim down the libs?
My C++ app is developed in Visual Studio 2012.
Ok I'm trying to create matrix of data that I can add values to based on a reading that I will get from a DVM. I'm using a 3d vector to do this. I need to keep track of the serial number, the day and within day I need to take two readings at different temps, this will continue for 7 days.
The rows of my 3d vector will be the days, the colums will be the serial numbers the depth will be the reading at the different temps.
What I need to do is compare the first element (days) and when it is greater then or equal to 4 I will perform calculations of the readings. So all I want to do is compare the first element of the vector, How do I do this?
Here is what I got
Code:
#include <vector>
typedef std::vector<double> Double1D;
typedef std::vector<Double1D> Double2D;
typedef std::vector<Double2D> Double3D;
#define HEIGHT 5
#define WIDTH 3
[Code]....
I am tying to compare two histograms, but it gives error. Here I have given my code, histogram file and error message. Histogram file 3*5 matrix(output_test.txt):
1 2 3 4 5
5 2 1 4 2
2 1 2 4 2
code:
int main(..........)
{ ................................................
Mat first_histogram(1,feature_vector_size, CV_32F);
Mat second_histogram(1,feature_vector_size, CV_32F);
for(i=0;i<count_row;i++)
{
for(j=0;j<count_row;j++)
{
[Code]...
Error message: error LNK2019: unresolved external symbol "double __cdecl cv::compareHist(class cv::Mat const &,class cv::Mat const &,int)" (?compareHist@cv@@YANABVMat@1@0H@Z)
I am trying to run a console program but for any reason it displays an error on the cv.h line.
View 5 Replies View RelatedI am trying to run an OpenCV program from command line, but it gave error like "The program can`t start because opencv_220d.dll is missing from your computer." Try reinstalling the program to fix this problem. I am using Windows 7 & Microsoft VC++ 2010. How can I run the program?
View 4 Replies View RelatedCode:
#include "opencv2/video/tracking.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc_c.h"
#include <stdio.h>
#include <stdlib.h>
[Code] ....
The above code is all I have so far. I got confused when I got to the part where my book on C tells me I need to use the cvCalcOpticalFlowFarneback() function to compare 2 consecutive images from the webcam and create the optical flow, and then measure movement between the frames to detect whether or not a person is moving through the room. How to do this, and the OpenCV wiki wasn't very descriptive on how to set it up for beginners. Honestly, the parameters just confused me and I didn't see a return value listed, or how you would get data from it.
I am trying to switch between 2 states, and the event that determines which state i am in is based on the key i've pressed. So in this case i want the webcam to start automatically, and when key is pressed it then turns it off. The way I've done it is like this :
bool webcam_on() {
int c = 0;
VideoCapture cap(0);
if ( !cap.isOpened() ) // if not success, exit program
[Code] .....
The problem with this method is that cin.get() blocks the video stream.. I wanted something that the webcam turned on until i press some key, which would trigger the release.. How can this be done?
I am tying to compare two histograms, but it gives error. Here I have given my code, histogram file and error message. Histogram file 3*5 matrix(output_test.txt):
1 2 3 4 5
5 2 1 4 2
2 1 2 4 2
code:
Code:
int main(..........)
{
................................................
Mat first_histogram(1,feature_vector_size, CV_32F);
Mat second_histogram(1,feature_vector_size, CV_32F);
[Code]....
Error message: error LNK2019: unresolved external symbol "double __cdecl cv::compareHist(class cv::Mat const &,class cv::Mat const &,int)" (?compareHist@cv@@YANABVMat@1@0H@Z)
I am currently planning on splitting my image into 3 channels so i can get the RGB values of an image to plot a scatter graph so i can model is using a normal distribtion calculating the covariance matrix, mean, etc. then calculate distance between the background points and the actual image to segment the image.
Now in my first task, i have wrote the following code.
VideoCapture cam(0);
//int id=0;
Mat image, Rch,Gch,Bch;
vector<Mat> rgb(3); //RGB is a vector of 3 matrices
namedWindow("window");
[Code] ....
but as soon as it reaches the split function, i step through it, it causes a unhandled exception error. access violation writing location 0xfeeefeee.
I am still new to opencv, so am not used to dealing with unhandled exception error.
I tried adding items into the vector still error, either via push_back or general assignment i.e. rgb[0] = Rch or Bch still error.
I'm able to get the graph, but now getting the border on the other side of the graph to align it with the right side of my screen.The output looks like that right now because I'm currently playing around with my y axis (right under the for loop) trying to scale everything. I've tried everything many different ways to get this to work.getting the border on the other side of the graph.
Code:
#include<stdio.h>
#include<Windows.h>
int main(void) {
int MAX = 0; //initialize and declare variables
int allcounts [10] = {0}; //store an array of integers for
}
[code]...
I have following code to create histogram, but it gave wrong output. In the program input_vector read 100 double numbers. I want to create a histogram with bin size=5. Output is [0;0;0;0;0].
Code:
vector<double>three_dimensional_shape_retreival_Hough_Transform:: histogram_creation(vector<double> input_vector) {
long int i;
long int j;
Mat histogram_input(input_vector);
cout<<"Histogram Input Matrix:"<<histogram_input<<endl;
int histSize =5;
[Code] .....
have this program .. i tried to make it work to give me this result output:
Code:
input array {1,3,5,1,1,8,6,6,1,3,2,1,6,8,8}
[0]
[1] *****
[2]*
[Code].....
instead i'm having asterisks at the end of the output
I'm trying to code one of the problems but it really is hard to catch errors for a novice like me at first.
I have to Write a single C function for computing the histogram of a list of nonnegative integers into 4 bins.
The main() function first initializes a positive integer array called List of size N, takes 3 inputs from the user A, B, C (assume 0 < A < B < C), and declares a second integer array Bin[4].
The doBinning function should count the number of elements of List in the interval [0, A) and store it in Bin[0], count of [A, B) in Bin[1], count of elements in [B,C) in Bin[2], and the number of elements >= C in Bin[3]
Code:
#include <stdio.h>
#define N 10
#define M 4
int *doBinning (int source[], int dest[], int a, int b, int c);
int main (){
[Code] ....
Somehow I keep getting error from ptr = doBinning(List[], Bins[]. What am I doing wrong? Code might contain some errors.
I need a C code for generating a Histogram with intensities at X-axis and number of pixels at Y-axis from a PGM format image.
View 5 Replies View RelatedScaling the yaxis on my histogram for one of my class projects. I've gotten mostly everything but stuck on scaling. I'm pretty sure it's something simple to do, but I'm having trouble, and I've tried everything to my knowledge to get it scaled from 0.1 - 1, like this:
Here is my code:
#include<stdio.h> //include all preprocessor directives
#include<Windows.h>
int main(void) {
int MAX = 0; //initialize and declare variables
int allcounts [10] = {0}; //store an array of integers for
int yaxis, xaxis = 0;
[Code] ....
I'm close, but every time I try and change my y axis in the for loop from 1 going down to 0.1, it doesn't give me a right output.
Write a function that generates 1000 normally distributed (Gaussian Probability Distribution) random numbers. Range should be between -3 and +3. Numbers should be double floating point.
There's more to it than that, but I've got it from there.
I have an assignment on image processing and amongst other question one of them specifies:calculate the equalized histogram of a grayscale image and show statistical data of your choice between the input and output images.
I am having trouble equalizing the histogram. Either I am missing the whole picture or minor details that cause problems.
Code:
// original histogram
for (i=0; i<lines; i++)
for (j=0; j<columns; j++)
hist[image_in[i][j]]++;
//histogram max and min
int hmax=-1,hmin=257;
for(int i=0;i<256;i++) {
[Code]...
I am thinking that my equalization formula is wrong, i might have incorrectly translated the mathematical formula from wikipedia to C code but i cant figure out why.
I am doing Histogram using pthreads and after long struggle on it.. finally it says 'Segmentation Fault (Core Dumped)'. I knew that error means something somewhere I am accessing to a wrong memory location.
Here is my code..
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
void Usage(char prog_name[]);
void Gen_data(void *p);
void Gen_bins(void *p);
int Which_bin(void *p);
void Print_histo(void *p);
[Code] ...
How to fix 'Segmentation Fault (Core Dumped)'?
I'm writing a program to display a histogram of 1000 Gaussian distributed numbers. I've generated the numbers using rand and now need to transform them. I have found the following formula to use
f(x) = exp(-x^2 / (2*sigma^2)) / sqrt(2*pi*sigma)
And I am unsure how to implement this into a function.
I have to make program which can generate a lot of random numbers and than prepare histogram with each number. Histogram must look that:
0 ( 50):*****************************************
1 ( 59):********************************************** ***
2 ( 42):***********************************
3 ( 49):****************************************
4 ( 41):**********************************
5 ( 53):********************************************
6 ( 60):********************************************** ****
7 ( 47):***************************************
8 ( 54):*********************************************
9 ( 45):*************************************