Ubuntu-gr Forum

Έχω κάνει τον εξής κώδικα που φορτώνει μαι εικόνα σαν unsigned char ** από ένα αρχεί και την αντιγράφει σε ένα άλλο αρχείο

Κώδικας: Επιλογή όλων


#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include<malloc.h>
#include"imageio.h"

// ---------------------------------------------------------------
// Usefull defines
// ---------------------------------------------------------------
#define INPUT_FILENAME "lenaGrey256.raw" // defining input filename
#define OUTPUT_FILENAME "lenaGrey256out.raw" // defining output filename
#define ROWS 256 // Picture height
#define COLUMNS 256 // Picture width
#define GREYLEVELS 256 // Graylevel sampling

#define OUTPUT_ROWS ROWS // Output height
#define OUTPUT_COLUMNS COLUMNS // Output width


int main(void)
{
unsigned char **inputImage, **outputImage;//table that will store the output image

FILE *inputFile,//Input
*outputFile;//Output file


/*
Usefull variables for the loops for storing and processing the image
*/
int i = 0,
j = 0;

//----------------------------------------
//Other variables
//----------------------------------------


//-------------------------------------------------
//Main Code
//-------------------------------------------------

inputImage=load_grayscale(INPUT_FILENAME,COLUMNS,ROWS);
outputImage=alocate_image(OUTPUT_ROWS,OUTPUT_COLUMNS);

if(inputImage==NULL || outputImage==NULL)
{
exit(-1);
}



// -----------------------------------------------------------
// Processing the Image
// -----------------------------------------------------------



for (i = 0; i < OUTPUT_ROWS; i++)
{

for (j = 0; j < OUTPUT_COLUMNS; j++)
{
outputImage[i][j] = inputImage[i][j];
}
}

store_grayscale(OUTPUT_FILENAME,outputImage,OUTPUT_ROWS,OUTPUT_COLUMNS);


}


Χρησιμοποιεί και τον εξής header (Imageio.h)

Κώδικας: Επιλογή όλων


#ifndef IMAGEIO
#define IMAGEIO
#include<stdio.h>
#include<stdlib.h>
unsigned char ** load_grayscale(unsigned char path[], unsigned int height, unsigned int width);
int store_grayscale(unsigned char * path, unsigned char **outputImage, unsigned int height, unsigned int width);
unsigned char ** alocate_image(int width, int height);
#endif


Και τις εξής συναρτήσεις του header (imageio.h)

Κώδικας: Επιλογή όλων


#include"imageio.h"
unsigned char ** load_grayscale(unsigned char path[], unsigned int height, unsigned int width)
{
FILE *inputFile;//Input
unsigned char **inputImage;

int i,j;

if ( ((inputFile = fopen(path,"rb")) != NULL))
{

inputImage = calloc(height,sizeof(unsigned char *));

if(inputImage==NULL)
{
return NULL;
}

for (i = 0; i < height; i++)
{
inputImage[i] = calloc(width, sizeof(unsigned char));

if(inputImage[i]==NULL)
{
free(inputImage);
return NULL;
}

for (j = 0; j < width; j++)
{
fscanf(inputFile, "%c", &inputImage[i][j]);
}
}
}
else
{
fprintf(stderr,"Error loading image.");
free(inputImage);
return NULL;
}
fclose(inputFile);
return inputImage;
}

int store_grayscale(unsigned char path[], unsigned char **outputImage, unsigned int height, unsigned int width)
{

FILE *outputFile;
int i,j;

if ( ((outputFile = fopen(path,"wb")) != NULL))
{
for (i = 0; i < height; i++)
{
for (j = 0; j < width; j++)
{
fprintf(outputFile, "%c",outputImage[i][j]);
}
}
}
else
{
fprintf(stderr,"Error saving image.");
return 0;
}
fclose(outputFile);

return 1;
}


unsigned char ** alocate_image(int height, int width)
{
int i;
unsigned char **image;

if((image=(unsigned char**)calloc(height,sizeof(unsigned char *)))==NULL)
{
return NULL;
}

for(i=0;i<height;i++)
{
if((image[i]=(unsigned char*)calloc(width,sizeof(unsigned char)))==NULL)
{
free(image);
return NULL;
}
}

return image;
}


Θ'ελω τις τιμές πτου πίνακων τύπου unssigned char να τους προβάλλω στην οθόνη σε ένα παράθυρο αλλα πως?

Η εικόνα είναι grayscale.

Ψ'αχνω στο youtube δίχως κανένα αποτέλεσμα