سلام:
من با استفاده از الگوریتمی که برای نازک سازی مطرح کردید وداشتن مرحله قبل (تبدیل تصویر به کد)برای قسمت نازک سازی درc++یک کلاس طراحی کردم.
ولی الان مشکلی که دارم این هست که وقتی برنامه را اجرا می کنم فقط قسمت اول ان یعنی تبدیل کد به تصویر انجام می شودclass ImageMatrix,,وکلاس من یعنیclass makeرا اجرا نمیکند.
نمیدونم شاید یه جا تو حلقه بی نهایت گیر می کنه#include <stdio.h>
#include <assert.h>
#include <conio.h>
#include <string.h>
#include <iostream.h>
class ImageMatrix
{
private:
FILE *fp;
unsigned long width;
unsigned long height;
long byteCols;
char **m;
void fileError();
void dec2binary(int, char *);
int pow2(int);
public:
ImageMatrix(char *fAddress); // faddress: image address
~ImageMatrix();
int read(char *faddress);
int getPixel(long x = 0, long y = 0);
int setPixel(int value=0,long x = 0, long y = 0);
int setPixel(long x = 0, long y = 0); // Returns 0 when t
//setting is successful
long getWidth();
long getHeight();
void save(char *saveAddress);
friend class make;
};
ImageMatrix::ImageMatrix(char *faddress)
{
read(faddress);
}
int ImageMatrix::read(char *faddress)
{
if ((fp = fopen("a:\\ye.bmp", "rb")) == NULL)
{
fileError();
return 1; //Error opening file
}
/* Read 1 bit bitmap: */
/* Input the width of the image: */
fseek(fp,18, SEEK_SET);
fread(&width, 4, 1, fp);
/* Input the height of the image: */
fseek(fp,22, SEEK_SET);
fread(&height, 4, 1, fp);
/* Allocate memory for m */
if (width % 8)
byteCols = width / 8 + 1; // clos: columns
else
byteCols = width / 8;
m = new char*[height];
for (int i = 0; i < height; i++)
m[i] = new char[byteCols];
for (i = 0; i < height; i++)
for (int j = 0; j < byteCols; j++)
m[i][j] = 0;
int numberOfZeros = 0;
while(byteCols % 4)
{
byteCols ++;
numberOfZeros ++;
}
byteCols -= numberOfZeros; // Reset byteCols
long bfOffBits; // 4 bytes are needed
assert(!fseek(fp, 10, SEEK_SET)); // offset to start of image data in
//bytes
fread(&bfOffBits, 4, 1, fp);
fseek(fp, bfOffBits, SEEK_SET); // go to the start of image data
for (i = height - 1; i >= 0; i--)
{
for (int j = 0; j < byteCols; j++)
fread(&m[i][j], 1, 1, fp);
fseek(fp, numberOfZeros, SEEK_CUR);
}
/* End of reading 1 bit bitmap */
return 0;
}
void ImageMatrix::dec2binary(int d, char *b)
{
int i = 0;
while(d)
{
b[i++] = d % 2;
d /= 2;
}
}
int ImageMatrix::getPixel(long x, long y)
{
if (y < 0 || y > height - 1)
y = 0;
if (x < 0 || x > width - 1)
x = 0;
int t = x / 8;
int r = x % 8;
unsigned char b = m[y][t];
char bb[8]; // binary byte
for (int i = 0; i < 8; i++)
bb[i] = 0;
dec2binary(b, bb);
return bb[7-r];
}
int ImageMatrix::setPixel(long x, long y)
{
//if (value)
//value = 1;
if (y < 0 || y > height - 1 || x < 0 || x > width - 1)
return 0; // This pixel does not exist;
/*int t = x / 8;
int r = x % 8;
unsigned char b = m[y][t];
char bb[8]; // binary byte
for (int i = 0; i < 8; i++)
bb[i] = 0;
dec2binary(b, bb);
bb[7 - r] = value;
char newValue = 0;
for (i = 0; i < 8; i++)
newValue += pow2(i) * bb[i];
m[y][t] = newValue;*/
return 1;
}
int ImageMatrix::setPixel(int value,long x, long y)
{
if (value)
value = 1;
//if (y < 0 || y > height - 1 || x < 0 || x > width - 1)
//return 0; // This pixel does not exist;
int t = x / 8;
int r = x % 8;
unsigned char b = m[y][t];
char bb[8]; // binary byte
for (int i = 0; i < 8; i++)
bb[i] = 0;
dec2binary(b, bb);
bb[7 - r] = value;
char newValue = 0;
for (i = 0; i < 8; i++)
newValue += pow2(i) * bb[i];
m[y][t] = newValue;
return 1;
}
void ImageMatrix::save(char *s)
{
FILE *saveAdr;
char ch;
if ((saveAdr = fopen(s, "wb")) == NULL)
fprintf(stderr, "\nError saving image");
long bfOffBits; // 4 bytes are needed
assert(!fseek(fp, 10, SEEK_SET)); // offset to start of image data in
//bytes
fread(&bfOffBits, 4, 1, fp);
fseek(fp, 0, SEEK_SET);
for (int i = 0; i < bfOffBits; i++)
{
fread(&ch, 1, 1, fp);
fwrite(&ch, 1, 1, saveAdr);
}
/* Number of Zeros */
int numberOfZeros = 0;
while(byteCols % 4)
{
byteCols ++;
numberOfZeros ++;
}
byteCols -= numberOfZeros; // Reset byteCols
/*----------------*/
ch = 0; // ch is set to zero for adding zeros to bitmap
for (int j = height - 1; j >= 0; j--)
{
for (int i = 0; i < byteCols; i++)
fwrite(&m[j][i], 1, 1, saveAdr);
for (int k = 0; k < numberOfZeros; k++)
fwrite(&ch, 1, 1, saveAdr);
}
fclose(saveAdr);
}
int ImageMatrix::pow2(int n)
{
int t = 1;
for (int i = 0; i < n; i++)
t *= 2;
return t;
}
void ImageMatrix::fileError()
{
fprintf(stderr, "\nError reading file");
}
long ImageMatrix::getWidth()
{
return width;
}
long ImageMatrix::getHeight()
{
return height;
}
ImageMatrix::~ImageMatrix()
{
for(int i = 0; i < height; i++)
delete [] m[i];
delete [] m;
fclose(fp);
}
/*void f(ImageMatrix &a, int x, int y, int r, int c)
{
int t;
for (int i = 0; i < a.getHeight(); i++)
for (int j = 0; j < a.getWidth(); j++)
{
t = (i-x)*(i-x)/10 + (j-y)*(j-y)/4;
if(t <= (r+1)*(r+1) && t >= r*r)
a.setPixel(j, i);
}
a.save("a:\\5.bmp");
}*/
//&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
//&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
class make {
public:
int check (int,int);
int around(int,int);
void thin();
};
make::check (s,t)
{
ImageMatrix a("a:\\ye.bmp");
int n,m;
int f=0;
int val=0;
if(a.getPixel(s,t)==val)
//return 0;
for(n=-1;n<=1;n++)
{
for(m=-1;m<=1;m++)
{
if(a.setPixel(s+n,t+m))
if(a.getPixel(s+n,t+m)==0)
f++;
}
}
return f-1;
}
//RETURN THE NUMBER OF 8 PIXEL AROUND (S,T) HAVING VALUE!=VAL
//**********************************
make:: around(s,t)
{
ImageMatrix a("a:\\ye.bmp");
int w,e,r,co_num;
co_num=0;
w=s-1;
e=t-1;
r=a.getPixel(w,e);
e++;
if(r!=a.getPixel(w,e))
{
r=a.getPixel(w,e);
co_num++;
}
e++;
if(r!=a.getPixel(w,e))
{
r=a.getPixel(w,e);
co_num++;
}
w++;
if(r!=a.getPixel(w,e))
{
r=a.getPixel(w,e);
co_num++;
}
w++;
if(r!=a.getPixel(w,e))
{
r=a.getPixel(w,e);
co_num++;
}
e--;
if(r!=a.getPixel(w,e))
{
r=a.getPixel(w,e);
co_num++;
}
e--;
if(r!=a.getPixel(w,e))
{
r=a.getPixel(w,e);
co_num++;
}
w--;
if(r!=a.getPixel(w,e))
{
r=a.getPixel(w,e);
co_num++;
}
w--;
if(r!=a.getPixel(w,e))
{
r=a.getPixel(w,e);
co_num++;
}
return (co_num/2);
}
//COMPUTE THE CROSSING INDEX FOR PIXEL (S,T);
//MOVE CLOCKWISE AROUND THE(S,T)PIXEL,COUNTING LEVEL CHANGES
//********************************
void make:: thin()
{
make d;
ImageMatrix a("a:\\ye.bmp"),b("a:\\ye.bmp");
int BACKGROUND=1;
int val=0;
int i,j,repeat,g;
//int n;
do{
repeat=0;
for(i=1;i<(a.getHeight())-1;i++)
for(j=1;j<(a.getWidth())-1;j++)
{
if(a.getPixel(i,j)==val)
//continue;
{
g=d.check(i,j);
if((g>=2)&&(g<=6))
{
if(d.around(i,j)==1)
{
if((1==b.getPixel(i-1,j))
||(1==b.getPixel(i,j+1))
||(1==b.getPixel(i+1,j)) )
{
if((1==b.getPixel(i,j+1))
||(1==b.getPixel(i+1,j))
||(1==b.getPixel(i,j-1)))
{
//a.getPixel(i,j)=BACKGROUND;
a.setPixel(1,i,j);
repeat=1;
}
}
}
}
}
for(i=1;i<(a.getHeight())-1;i++)
for(j=1;j<(a.getWidth())-1;j++)
{
if(a.getPixel(i,j)!=val)
//continue;
g=d.check(i,j);
if((g>=2)&&(g<=6))
{
if(d.around(i,j)==1)
{
if((1==a.getPixel(i-1,j))
||(1==a.getPixel(i,j+1))
||(1==a.getPixel(i,j-1)) )
{
if((1==a.getPixel(i-1,j))
||(1==a.getPixel(i+1,j))
||(1==a.getPixel(i,j-1)))
{
//a.getPixel(i,j)=BACKGROUND;
a.setPixel(1,i,j);
repeat=1;
}
}
}
}
}
}
}
while(repeat);
}
//THIN THE REGION
//**********************************
//**********************************
void main()
{
ImageMatrix a("a:\\ye.bmp");
ImageMatrix b("a:\\ye.bmp");
class make d ;
//a.setPixel(0, 0, 2);
//a.setPixel(36, 39, 1);
clrscr();
// cout << "hi";
for (int j = 0; j < a.getHeight(); j++)
{
printf("\n");
for (int i = 0; i < a.getWidth(); i++)
{
int b = a.getPixel(i, j);
if(b)
d.thin();
//printf("%c", 178);
//else
//printf(" ");
}
}
a.save("a:\\4.bmp");
/* int s,t;
// int dcheck= d.check(s,t);
//int daround=d.around(s,t);
for( s=0;s<a.getHeight();s++)
{
for( t=0;t<a.getWidth();t++)
{
if((a.setPixel(s,t)))
//continue;
// cout << "b";
d.check(s,t);
d.around(s,t);
d.thin();
// printf("*");
}
}*/
getch();
}