reverse.cpp

很经典的数字图像处理讲义

#include <stdio.h>

int main(int argc,char ** argv)
{
	if ( argc != 3 )
	{
		printf("Please input REVERSE INPUTFILE OUTFILE \n");
		return(0);
	}

	FILE *fp,*rfp;
	fp = fopen(argv[1],"rb");
	rfp = fopen(argv[2],"wb");
	if ( fp == NULL || rfp == NULL )
	{
		printf("File error\n");
		return 0;
	}

	unsigned char buffer[1078];
	fread(buffer,1078,1,fp);
	fwrite(buffer,1078,1,rfp);

	FILE *rp = fopen("header","wb");
	fwrite(buffer,1078,1,rp);
	fclose(rp);

	unsigned char temp[256];
	for ( int i = 0 ; i < 256 ; i++ )
	{
		fread(temp,256,1,fp);
		for ( int j = 0 ; j < 256 ; j++ )
			if ( temp[j] > 128 ) temp[j] = 0;
			else temp[j] = 255;
		fwrite(temp,256,1,rfp);
	}

	fclose(fp);
	fclose(rfp);
	return 0;
}