bmp.rar_BMP 图_bmp_bmp delphi_bmp txt_读取bmp图像

#include <string> #include <fstream> #include <iostream> #include <cmath> #define _WIDTH 555 #define _HEIGHT 479 #define _BYTE_PER_PIXEL 1 using namespace std; class BMP { private: typedef unsigned char var8; typedef unsigned int uvar32; typedef unsigned short int uvar16; typedef struct { var8 Blue,Green,Red,Reserved;} Palette; var8 imdata[_WIDTH][_HEIGHT]; var8 imdata2[_WIDTH*_HEIGHT*_BYTE_PER_PIXEL]; public: int getArrayRGB(int m,int n); int init(char* BMPPath); int findBorder(int & leftborder,int & rightborder); int maxK(int column); int avergeMaxK(); }; int BMP::getArrayRGB(int m,int n)// the mth row and the nth column;m=0,1,2,3...;n=0,1,2,3,... { return imdata2[_BYTE_PER_PIXEL*n+m*_WIDTH]; } int BMP::init(char* BMPPath) { uvar32 Size,Offset,Height,Width,Compress,Reserved, InfoHeaderSize,Colors,ImportantColors,DataSize,HResolution,VResolution; uvar16 Planes,Bit; int i; var8 type[2]; Palette Rgbquad; ifstream fin; ofstream fout; ofstream fout1("out1.txt"); fin.open(BMPPath,ios::binary); bool debug=0; if(!fin) { fout1<<"No this file!\n"; return 1; } fin.read((char*)&type ,2); fout1<<"file type: "<<type[0]<<type[1]<<endl; if(debug)cout<<"file type: "<<type[0]<<type[1]<<endl; fin.read((char*)&Size ,sizeof(uvar32)); fout1<<"file size: "<<Size<<endl; if(debug)cout<<"file size: "<<Size<<endl; fin.read((char*)&Reserved,sizeof(uvar32)); fout1<<"Reserved dword: "<<Reserved<<endl; if(debug)cout<<"Reserved dword: "<<Reserved<<endl; fin.read((char*)&Offset ,sizeof(uvar32)); fout1<<"Offset: "<<Offset<<endl; if(debug)cout<<"Offset: "<<Offset<<endl; fin.read((char*)&InfoHeaderSize,sizeof(uvar32)); fout1<<"Bitmap Info Header Size: "<<InfoHeaderSize<<endl; if(debug)cout<<"Bitmap Info Header Size: "<<InfoHeaderSize<<endl; fin.read((char*)&Width,sizeof(uvar32)); fout1<<"Bitmap Width: "<<Width<<endl; if(debug)cout<<"Bitmap Width: "<<Width<<endl; fin.read((char*)&Height,sizeof(uvar32)); fout1<<"Bitmap Height: "<<Height<<endl; if(debug)cout<<"Bitmap Height: "<<Height<<endl; fin.read((char*)&Planes,sizeof(uvar16)); fout1<<"Bitmap Planes: "<<Planes<<endl; if(debug)cout<<"Bitmap Planes: "<<Planes<<endl; fin.read((char*)&Bit,sizeof(uvar16)); fout1<<"Bits per Pixel: "<<Bit<<endl; if(debug)cout<<"Bits per Pixel: "<<Bit<<endl; fin.read((char*)&Compress,sizeof(uvar32)); fout1<<"Compresssion Y or N: "<<Compress<<endl; if(debug)cout<<"Compresssion Y or N: "<<Compress<<endl; if(Compress) { fin.close();return 2;} fin.read((char*)&DataSize,sizeof(uvar32)); fout1<<"Data Size: "<<DataSize<<endl; fout1<<"Data Size: "<<DataSize<<endl; fin.read((char*)&HResolution,sizeof(uvar32)); fout1<<"HResolution: "<<HResolution<<endl; if(debug)cout<<"HResolution: "<<HResolution<<endl; fin.read((char*)&VResolution,sizeof(uvar32)); fout1<<"VResolution: "<<VResolution<<endl; if(debug)cout<<"VResolution: "<<VResolution<<endl; fin.read((char*)&Colors,sizeof(uvar32)); fout1<<"Colors: "<<Colors<<endl; if(debug)cout<<"Colors: "<<Colors<<endl; fin.read((char*)&ImportantColors,sizeof(uvar32)); fout1<<"ImportantColors: "<<ImportantColors<<endl; if(debug)cout<<"ImportantColors: "<<ImportantColors<<endl; for(i=0;i<2;i++) { fin.read((char*)&Rgbquad,sizeof(Palette)); fout1<<int(Rgbquad.Blue)<<" "<<int(Rgbquad.Green)<<" "<<int(Rgbquad.Red)<<" "<<int(Rgbquad.Reserved)<<endl; if(debug)cout<<int(Rgbquad.Blue)<<" "<<int(Rgbquad.Green)<<" "<<int(Rgbquad.Red)<<" "<<int(Rgbquad.Reserved)<<endl; } fin.seekg(Offset,ios::beg); for( i=0;i<_HEIGHT*_WIDTH*_BYTE_PER_PIXEL;i++) { if(i%(_BYTE_PER_PIXEL*_WIDTH)==0) { if(debug)cout<<"\n"<<i/(_BYTE_PER_PIXEL*_WIDTH)<<endl; fout1<<"\n"<<i/(_BYTE_PER_PIXEL*_WIDTH)<<endl; } if(i%_BYTE_PER_PIXEL==0) { if(debug)cout<<";"; fout1<<";"; } if(i%(_BYTE_PER_PIXEL*_WIDTH)==0 && i!=0) { fin.read((char*)&imdata2[i],sizeof(var8)); //fin.read((char*)&imdata2[i],sizeof(var8)); //fin.read((char*)&imdata2[i],sizeof(var8)); } else { fin.read((char*)&imdata2[i],sizeof(var8)); } fout<<imdata2[i]; if(debug)cout<<(int)imdata2[i]<<" "; fout1<<(int)imdata2[i]<<" "; } if(debug)cout<<endl; fout.close(); return 0; } int BMP::findBorder(int & leftborder,int & rightborder) { int i,j,flag=0; for(j=0;j<_WIDTH;j++) { for(i=0;i<_HEIGHT;i++) { if(getArrayRGB(i,j)>250) { leftborder=j; flag=1; break; } } if(flag) break; } flag=0; for(j=_WIDTH-1;j>=0;j--) { for(i=0;i<_HEIGHT;i++) { if(getArrayRGB(i,j)>200) { rightborder=j; flag=1; break; } } if(flag) break; } return 0; } int BMP::maxK(int column) { int h[_HEIGHT],k=0; // //cout<<a<<" "<<b; for(int i=0;i<_HEIGHT;i++) { h[i]=getArrayRGB(i,column); //cout<<h[i]<<" "; } for( i=0;i<_HEIGHT-1;i++) { int temp=h[i+1]-h[i]; temp=(temp>0)?temp:-temp; if(temp>k) { k=temp; } } return k; } int BMP::avergeMaxK() { int a,b,K=0; findBorder(a,b); for(int j=a;j<b;j++) { K+=maxK(j); } K=K/(b-a); return K; } /* int main() { BMP a; a.init("test.bmp"); return 0; } */