Question

如何用编程把.BMP格式的图像转换为.RAW

RT..

Answer 1

程序代码（c++版）：
#include<iostream.h>
#include<stdio.h>
void main()
{
char filename[50];
unsigned char oi[128][128];
unsigned char ii[128][128];
int Row=128,Col=128;//定义长和宽
cout<<"请输入要打开的文件："<<endl;
cin>>filename;
FILE *fp;
if((fp=fopen(filename,"rb"))==0)//输入要打开的文件
{
cout<<"Cannot open file,push any key!"<<endl;//如果不可打开，报错
getchar();
return;
}
fseek(fp,1078L,0);//
fread(ii,1,128*128,fp);
fclose(fp);
for(int k=0;k<Row;k++)
for(int j=0;j<Col;j++)
{
oi[k][j]=ii[Row-k-1][j];//转换坐标。若起初i=127，转化后row-127-1=128-127-1=0
cout<<(int)oi[k][j]<<" ";
if((k*Row+j)%10==0)
cout<<endl;
}
cout<<endl;
cout<<"********************************************************************************"<<endl;
FILE *fp1;
cout<<"请输入要打开的文件："<<endl;
cin>>filename;
if((fp1=fopen(filename,"wb"))==0)//输入要打开的文件
{
cout<<"Cannot open file"<<endl;//如果不可打开，报错
getchar();
return;
}
fwrite(oi,1,128*128,fp1);
fclose(fp1);
cout<<endl;
cout<<"********************************************************************************"<<endl;
cout<<"文件已保存，感谢使用！"<<endl;
}

c语言版：
#include <stdio.h>
#include<stdlib.h>
static unsigned char ii[128][128];
int Row=128,Col=128;
char file_name[40];
Load_data_file()
{
int f1;
int i,n;
unsigned long offbits;
FILE *fp;
printf("Please input original file name :");
scanf("%s",file_name);
f1=Col*Row;
if((fp=fopen(file_name,"rb"))==0)
{
printf("Cannot open file,push any key!\n");
putchar(0x07);
getchar();
exit(0);
}
fseek(fp,10L,0);
fread(&offbits,4,1,fp);
printf("offBits=%ld\n",offbits);
printf("press any key to continue\n");
putchar(0x07);
getchar();

fseek(fp,offbits,0);
if(fread(ii,1,f1,fp)!=f1)
{
printf("File read error\n");
putchar(0x07);
getchar();
exit(0);
}
fclose(fp);

};
void main()
{ FILE * fp;
unsigned char oi[128][128];
int f2=Col*Row,i,j;
Load_data_file();
for(i=0;i<Row;i++)
for(j=0;j<Col;j++)
{
oi[i][j]=ii[Row-i-1][j];
printf("%d ",oi[i][j]);
}
printf("\n");

printf("Input save file name:");
scanf("%s",file_name);
if((fp=fopen(file_name,"wb"))==0)
{
printf("Cannot open file\n");
return;
}
if(fwrite(oi,1,f2,fp)!=f2)
printf("File write error\n");
fclose(fp);
getchar();
return;
}
注意：bmp格式的图像应为8位，老师应该会提供。