📄 middle.htm
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<BODY leftMargin=5 topMargin=5 border="0" marginheight="0" marginwidth="0"><PRE style="WIDTH: 100%; WORD-WRAP: break-word">/////////// ///////Digital image processing algorithm /////////////////////
///////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////
//Macro definition for use later
#include "math.h"
#include "stdio.h"
#include "process.h"
#include "stdlib.h"
//Function declaration
void copyfile(FILE *fp);
void histogram(FILE *fp);
void negative(FILE *fp);
void imsharpe(FILE *fp);
void imsmooth(FILE *fp);
void middle(FILE *fp);
unsigned char sort(unsigned char a[],int n );
//////////////////////////////////////////////////////////////////////////
//Main function calls the subfunctions
void main()
{
FILE *fp;
char choose;
unsigned char c;
int totpix=0;
char filename[10];
//Display some information about the autors's point of view
printf("////////////////////////////////////////////////////////////////////////////\n");
printf("欢迎使用图像处理程序－－－图像增强篇!!\n");
printf("版权所有:徐明才 贾殷嘉 指导教师：高腾\n");
//Ask user to input the file which he or she want to open
printf("////////////////////////////////////////////////////////////////////////////\n");
printf("Please input the filename which you want to open\n");
scanf("%s",filename);
//Get the return key
getchar();
//Open the corresponding file
if((fp=fopen(filename,"rb"))==NULL)
{
printf("Cannot open the file");
exit(0);
}
//Get the basic information about the original image
// printf("\n\nInformation about the image\n");
while(!feof(fp))
{
c=fgetc(fp);
totpix++;
}
// Let the fp point to the start of the file again
rewind(fp);
//Ask the user to choose the operation needed
printf("////////////////////////////////////////////////////////////////////////////\n");
printf("%Please choose the operation\n\n");
printf("Press 1 Copy the image! you will get new file----copy.dat\n\n");
printf("Press 2 Negative the image! you will get new file----negative.dat\n\n");
printf("Press 3 Histogram equalization! you will get new file----hist.dat\n\n");
printf("Press 4 image sharping! you will get new file----sharpe.dat\n\n");
printf("Press 5 image smoothing! you will get new file----smooth.dat\n\n");
printf("Press 6 image middle filtering! you will get new file----middle.dat\n\n");
printf("!!!!!If you press any other key . The program will return the error message!\n");
printf("////////////////////////////////////////////////////////////////////////////\n");
printf("You choice is 1 or 2 or 3 or 4 or 5 or 6? ");
//Judge the input key
again:
choose=getchar();
switch(choose)
{case '1': copyfile(fp); break;
case '2': negative(fp); break;
case '3': histogram(fp); break;
case '4': imsharpe(fp); break;
case '5': imsmooth(fp); break;
case '6': middle(fp); break;
default: printf("\nI am very sorry!\nThere are no operation you need\n");goto again;
}
fclose(fp);
//Call the exeutive program
system("see.exe");
}
/////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////
void copyfile(FILE *fp)
{ FILE *fp1;
unsigned char c;
//Create the new1 file
if((fp1=fopen("copy.dat","wb"))==NULL)
{
printf("Cannot create the first file");
exit(0);
}
//Read the file byte by byte
while(!feof(fp))
{
c=fgetc(fp);
fputc(c,fp1);
}
fclose(fp1);
}
/////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
//The subfunction--negative
//The function is to be used to get the negative image of the origianl image
void negative(FILE *fp)
{ FILE *fp1;
unsigned char c;
//Create the new1 file
if((fp1=fopen("negative.dat","wb"))==NULL)
{
printf("Cannot create the first file");
exit(0);
}
//Read the file byte by byte
while(!feof(fp))
{
c=fgetc(fp);
c=255-c;
fputc(c,fp1);
}
fclose(fp1);
}
/////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////
//The subfunction--histogram
//The function is equalizing the original image
void histogram(FILE *fp)
{ FILE *fp1;
int i=0;
int j;
unsigned char c;
float sum=0;
float graylevel[256];
//Initiate the array of graylevel
for(j=0;j<256;j++)
graylevel[j]=0;
if((fp1=fopen("hist.dat","wb"))==NULL)
{
printf("Cannot create the first file");
exit(0);
}
//Statistatics of the original image
while(!feof(fp))
{
c=fgetc(fp);
graylevel[c]++;
i++;
}
i=i-1;
graylevel[255]=graylevel[255]-1;
//Get the probality of the different graylevels
for(j=0;j<256;j++)
{graylevel[j]=graylevel[j]/i;
sum=sum+graylevel[j];
}
// Convert the probability
for(j=1;j<256;j++)
{graylevel[j]=graylevel[j]+graylevel[j-1];
}
printf("\n");
printf("\n");
//Convrt the old graylevel to the new graylevel
for(j=0;j<256;j++)
{graylevel[j]=(int)(graylevel[j]*255+0.5);
}
printf("\n");
printf("\n");
//Change the original image to the new after converting the graylevels
rewind(fp);
rewind(fp1);
while(!feof(fp))
{
c=fgetc(fp);
c=(unsigned char)graylevel[c];
fputc(c,fp1);
}
fclose(fp1);
}
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
//The subfunction--imsharpe
//The function is sharping the original image
void imsharpe(FILE *fp1)
{ FILE *fp2;
int mask[3][3];
unsigned char img[3][256],transimg[256];
unsigned char firstrow[256]={0},lastrow[256]={0}; /*firstcolumn[256],lastcolumn[256];*/
int i,k,l,m=0,n=0;
int h,g;
unsigned int result;
//Ask user to input the mask
printf("Please input the mask which is 3 order\n");
for(m=0;m<3;m++)
for(n=0;n<3;n++)
scanf("%d",&mask[m][n]);
getchar();
printf("\n");
if((fp2=fopen("sharpe.dat","wb"))==NULL)
{ printf("Cannot open the file");
exit(0);
}
//Save and write the first row
for(i=0;i<256;i++)
{ firstrow[i]=fgetc(fp1);
fputc(firstrow[i],fp2);
}
//Save and write the last row
fseek(fp1,255*256,0);
for(i=0;i<256;i++)
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