小弟新手刚学数字图像处理，现在需要做一个模板卷积
程序编完了 但是对图片的处理总是不对
我把图片不做模板卷积只是读进去在存出来，发现图片已经变化了。
但是查了很久fread函数和fwrite函数，不知道哪里错了
大神们求拯救帮忙看看
程序很简单
define的想法就是用一维数组表示二维数组
#include
using namespace std;
#define Twoto1(i,j,w) i*w+j
void createimage(unsigned char *&img, int w, int h)
{img = new unsigned char[w*h];}
void delateimage(unsigned char*img)
{delete []img;}
void readimage(unsigned char*img, int w, int h, char *fname)
{
FILE *fp;
fopen_s(&fp,fname, "rb");
if (fp == NULL){ cout << "error" << endl; return; }
size_t result;
result=fread(img , sizeof(unsigned char), w*h, fp);
if (result != w*h)
{
cout << "Reading error" << endl;
return;
}
else
cout << "Reading Ok!" << endl;
fclose(fp);
}
void mobanjuanji(unsigned char image, unsigned char*image1, int w, int h, float moban[5][5])
{
for (int i = 0; i
for (int j = 0; j
if (iw - 3 || j>h - 3)
image1[Twoto1(i,j,w)] = 0;
else
{
float temp = 0;
for (int m = 0; m<5; m++)
for (int n = 0; n<5; n++)
{
temp += (image[Twoto1(i-2+m,j-2+n,w)] moban[m][n]);
}
if (temp>255) image1[Twoto1(i, j, w)] = 255;
else if (temp<0) image1[Twoto1(i, j, w)] = 0;
else image1[Twoto1(i, j, w)] = temp;
}
}
void saveimage(unsigned char *img, int w, int h, char *fname)
{
FILE *fp;
fopen_s(&fp, fname, "wb");
if (fp == NULL) { cout << "error" << endl; return; }
size_t result;
result = fwrite(img, sizeof(unsigned char), w*h, fp);
if (result != w*h)
{
cout << "Write error" << endl;
return;
}
else
cout << "Write Ok!" << endl;
fclose(fp);
}
void main()
{
unsigned char *img;
unsigned char *img1;
float moban[5][5] = { {0,0,0,0,0},{0, -1, 0, 1, 0 }, { 0, -2, 0, 2, 0 }, { 0, -1, 0, 1, 0 }, { 0,0,0,0,0 } };
//float moban[5][5] = { 0 };
int w = 512, h = 512;
createimage(img, w, h);
createimage(img1, w, h);
readimage(img, w, h, "E:\ss.raw");
mobanjuanji(img, img1,w, h, moban);
saveimage(img, w, h, "E:\ss_1.raw");
saveimage(img1, w, h, "E:\ss_2.raw");
delateimage(img);
delateimage(img1);
}
第一张是原图
第二张是直接读进去不作处理存出来
第三张是做卷积过后
可以看到貌似不做处理直接读出来 图片也是和原来不一样了- -
求帮忙看看呀
谢谢大家
