CODEWITHSUNDEEP
c++imageimage-processing
Harshil Sharma
Harshil Sharma

Reputation: 2035

c++ image processing tutorials withuot 3rd party library

I want to learn image processing in C++, but I don't want to use any 3rd party library for image manipulation. Use of library for displaying the image(s) is okay, but all manipulations are to be done manually.

Please point me to some good tutorials. I'm a beginner in this field, so I also need to know how to display an image.

Upvotes: 10

Views: 9995

Answers (2)

Francesco Callari
Francesco Callari

Reputation: 11825

Try CImg (it's entirely self-contained) - http://cimg.sourceforge.net/

Upvotes: 0

lulyon
lulyon

Reputation: 7265

Seems you lack basic knowledge of Digital Image Processing, I recommand to you this book. Digital Image Processing (3rd Edition) Rafael C.Gonzalez / Richard E.Woods http://www.amazon.com/dp/013168728X

For basic operation using OpenCV(which I am familiar with), here is an example:

/*
function：image reverse
*/  
#include "stdafx.h"  
#include <stdlib.h>  
#include <stdio.h>  
#include <math.h>  
#include <cv.h>  
#include <highgui.h>  
int main(int argc, char *argv[])  
{  
    IplImage* img = 0;   
    int height,width,step,channels;  
    uchar *data;  
    int i,j,k;  
    if(argc<2)  
    {  
        printf("Usage: main <image-file-name>/n/7");  
        exit(0);  
    }  
    // Load image   
    img=cvLoadImage(argv[1],-1);  
    if(!img)  
    {  
        printf("Could not load image file: %s\n",argv[1]);  
        exit(0);  
    }  
    // acquire image info  
    height    = img->height;    
    width     = img->width;    
    step      = img->widthStep;    
    channels  = img->nChannels;  
    data      = (uchar *)img->imageData;  
    printf("Processing a %dx%d image with %d channels/n",height,width,channels);   
    // create display window  
    cvNamedWindow("mainWin", CV_WINDOW_AUTOSIZE);   
    cvMoveWindow("mainWin", 100, 100);  
    // reverse image 
    for(i=0;i<height;i++)   
        for(j=0;j<width;j++)   
            for(k=0;k<channels;k++)  
                data[i*step+j*channels+k]=255-data[i*step+j*channels+k];  
    // display reversed image  
    cvShowImage("mainWin", img );  
    cvWaitKey(0);  
    cvReleaseImage(&img );  
    printf("height=%d  width=%d step=%d channels=%d",height,width,step,channels);  
    return 0;  
}

Upvotes: 7

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