Qt编写的数字图像处理软件

#include "imagefile.h" #include <Windows.h> #include <string.h> #include <QString> #include <QFile> void CreateBmpFileHeader(char *filename,long width,long height,WORD bitCount) { FILE *out; bITMAPFILETYPE bft2; bITMAPFILEHEADER bfh2; bITMAPINFOHEADER bih2; DWORD LineByte,ImgSize; //分配内存空间把源图存入内存 LineByte = WIDTHBYTES(width*bitCount);//计算位图一行的实际宽度并确保它为32的倍数 ImgSize=height*LineByte; if (bitCount==24||bitCount==8) { if (bitCount==24) { bfh2.bfSize=(DWORD)(54+ImgSize); bfh2.bfOffBits=(DWORD)(54); //文件头距离像素数据的偏移量 } if (bitCount==8) { bfh2.bfSize=(DWORD)(54+256+ImgSize); bfh.bfOffBits=(DWORD)(54+4*256);//文件头距离像素数据的偏移量 } //-----------------------write bmp fileheader's info--------------------- //bmp file's type bft2.bfType=0x4D42; //bmp fileheader's info bfh2.bfReserved1=0; bfh2.bfReserved2=0; //bmp file's infoheader bih2.biSize=40;//本位图信息头的长度，为40字节 bih2.biWidth=width; bih2.biHeight=height; bih2.biPlanes=1; bih2.biBitCount=bitCount;//位图颜色位深 bih2.biCompression=0;//是否压缩:0不压缩 bih2.biSizeImage=ImgSize;//像素数据大小; bih2.biXPelsPerMeter = 0; bih2.biYPelsPerMeter = 0; bih2.biClrUsed = 0;//用到的颜色数,为0则是 2^颜色位深 bih2.biClrImportant = 0;//重要的颜色数,为0则全部都重要 //---------------------------Output---------------------------- out = fopen(filename,"wb"); if(out) { //write bmp file's type fwrite(&bft2,sizeof(bITMAPFILETYPE),1,out); //write bmp file's header info fwrite(&bfh2,sizeof(bITMAPFILEHEADER),1,out); //write bmp file's infoheader fwrite(&bih2,sizeof(bITMAPINFOHEADER),1,out); if (bitCount==8) { //write bmp file's rgbquad fwrite(rgb,sizeof(rGBQUAD),sizeof(rgb)/sizeof(rGBQUAD),out); } fclose(out); } } } //创建bmp文件头 void CreateBmpFile(char *filename, BYTE *Imgdata_N, long width, long height) { remove(filename);//删除之前的备份图像 CreateBmpFileHeader(filename, width, height, bih.biBitCount);//写图像文件头部分 //-------------------------写图像文件图像数据部分---------------------------- FILE *out; out = fopen(filename,"ab+");//追加写入（承接文件头） if (out) { DWORD LineByte_N = WIDTHBYTES(width*bih.biBitCount); DWORD ImgSize_N = height*LineByte_N; fwrite(Imgdata_N,sizeof(BYTE),ImgSize_N,out); fclose(out); } } //创建bmp文件） void AnalysisBmp(char *filename, long &width, long &Height, long &BitCount) { FILE *in; if (width==0&&Height==0&&BitCount==0) { memset(Ogra,0,sizeof(Ogra)); memset(rgb,0,sizeof(rgb)); } memset(Ngra,0,sizeof(Ngra)); in=fopen(filename,"rb"); if (in) { fread(&bft.bfType,sizeof(bITMAPFILETYPE),1,in);//读取文件类型信息 if (bft.bfType!=0x4d42) { //此文件不是BMP文件类型; return; } else { fread(&bfh,sizeof(bITMAPFILEHEADER),1,in);//读取位图文件头信息 fread(&bih,sizeof(bITMAPINFOHEADER),1,in);//读取位图文件头信息 width=bih.biWidth; Height=bih.biHeight; BitCount=bih.biBitCount;//提取源图像的信息（传递于Dialog类中） DWORD LineByte = WIDTHBYTES(width*BitCount); if (bih.biBitCount==24) { Imgdata=(BYTE *)malloc(bih.biSizeImage);//分配图像数据存储内存 fread(Imgdata,bih.biSizeImage,1,in);//读取位图像素数据 //free(Imgdata); for (long i=0;i<Height;i++) { for (long j=0;j<width;j++) { BYTE B_data=Imgdata[LineByte*i+3*j]; BYTE G_data=Imgdata[LineByte*i+3*j+1]; BYTE R_data=Imgdata[LineByte*i+3*j+2]; if (Ogra[256]==0) Ogra[((9798*R_data+19235*G_data+3735*B_data))/32768]++; Ngra[((9798*R_data+19235*G_data+3735*B_data))/32768]++; } } if (Ogra[256]==0) { OWidth=width; OHeight=Height; Ogra[256]=-1; } } else if (bih.biBitCount==8) { fread(rgb,sizeof(rGBQUAD),256,in);//读取图像调色板数据 Imgdata=(BYTE *)malloc(bih.biSizeImage);//分配图像数据存储内存 fread(Imgdata,bih.biSizeImage,1,in);//读取位图像素数据 //free(Imgdata); for (long i=0;i<Height;i++) { for (long j=0;j<width;j++) { BYTE data=Imgdata[LineByte*i+j]; if (Ogra[256]==0) Ogra[data]++; Ngra[data]++; } } if (Ogra[256]==0) { OWidth=width; OHeight=Height; Ogra[256]=-1; } } } fclose(in); } } //分析bmp文件 void SQProcess(char *filename, long width, long height, long lev) { //-------------------------采样量化处理---------------------------- DWORD LineByte_O = WIDTHBYTES(bih.biWidth*bih.biBitCount); DWORD LineByte_N = WIDTHBYTES(width*bih.biBitCount); DWORD ImgSize_N = height*LineByte_N; BYTE *Imgdata_N=(BYTE *)malloc(ImgSize_N); //申请用于存储新图像像素数据的数组 BYTE R_data,G_data,B_data,Y_data; long x,y; if (bih.biBitCount==24) { for (long i=0;i<height;i++) { y=bih.biHeight/height*i; for (long j=0;j<width;j++) { x=bih.biWidth/width*j; B_data=Imgdata[LineByte_O*y+3*x]; G_data=Imgdata[LineByte_O*y+3*x+1]; R_data=Imgdata[LineByte_O*y+3*x+2]; //Y_data=(9798*R_data+19235*G_data+3735*B_data)/32768;//转换为灰度图像 Y_data=(3*R_data+6*G_data+1*B_data)/10; Y_data=(BYTE)((Y_data/(256/lev))*(256/lev)+256/lev/2);//量化 Imgdata_N[i*LineByte_N+j*3]=Y_data; Imgdata_N[i*LineByte_N+j*3+1]=Y_data; Imgdata_N[i*LineByte_N+j*3+2]=Y_data; /*Imgdata_N[i*LineByte_N+j*3]=((B_data/(256/lev))*(256/lev)+256/lev/2); Imgdata_N[i*LineByte_N+j*3+1]=((G_data/(256/lev))*(256/lev)+256/lev/2); Imgdata_N[i*LineByte_N+j*3+2]=((R_data/(256/lev))*(256/lev)+256/lev/2);*/ } } } else if (bih.biBitCount==8) { for (long i=0;i<height;i++) { y=bih.biHeight/height*i; for (long j=0;j<width;j++) { x=bih.biWidth/width*j; Y_data=Imgdata[LineByte_O*y+x]; Y_data=(BYTE)((Y_data/(256/lev))*(256/lev)+256/lev/2);//量化 Imgdata_N[i*LineByte_N+j]=Y_data; } } for (long i=0;i<256;i++) rgb[i].rgbBlue=rgb[i].rgbGreen=rgb[i].rgbRed=(1*rgb[i].rgbBlue+6*rgb[i].rgbGreen+3*rgb[i].rgbRed)/10; } CreateBmpFile(filename,Imgdata_N,width,height);//创建新图像文件 free(Imgdata_N); } //采样量化处理主函数 void ITProcess(char *filename, int pro) { //-------------------------图像变换处理---------------------