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Message: [QUOTE="james, post: 1479930"] there are many resource on the internet. the better way is through google. [URL="http://www.itk.org"]www.itk.org[/URL] is one of them. All your concern are possible. I suppose you are running at windows platform. and plannig to display. you need to recognize the format of BMP(orDIB). If you'd like to read JPEG file visit [URL]http://www.jpeg.org[/URL] . typedef struct tagRGBQUAD { BYTE rgbBlue; BYTE rgbGreen; BYTE rgbRed; BYTE rgbReserved; } RGBQUAD; typedef RGBQUAD* LPRGBQUAD; typedef struct tagBITMAPINFOHEADER{ DWORD biSize; LONG biWidth; LONG biHeight; WORD biPlanes; WORD biBitCount; DWORD biCompression; DWORD biSizeImage; LONG biXPelsPerMeter; LONG biYPelsPerMeter; DWORD biClrUsed; DWORD biClrImportant; } BITMAPINFOHEADER, *LPBITMAPINFOHEADER, *PBITMAPINFOHEADER; typedef struct tagBITMAPINFO { BITMAPINFOHEADER bmiHeader; RGBQUAD bmiColors[1]; } BITMAPINFO, *LPBITMAPINFO, *PBITMAPINFO; typedef struct tagBITMAPFILEHEADER { WORD bfType; DWORD bfSize; WORD bfReserved1; WORD bfReserved2; DWORD bfOffBits; } BITMAPFILEHEADER, *LPBITMAPFILEHEADER, *PBITMAPFILEHEADER; //source code for read 8 bit image BOOL CDib::Load(LPCSTR lpszDibFile) { //openfile ifstream tfile(lpszDibFile,ios::binary|ios::nocreate); if (tfile) //open sucessful { //file header tfile.read((char*)&(m_bmfHeader.bfType),sizeof(m_bmfHeader.bfType)); tfile.read((char*)&(m_bmfHeader.bfSize),sizeof(m_bmfHeader.bfSize)); tfile.read((char*)&(m_bmfHeader.bfReserved1),sizeof(m_bmfHeader.bfReserved1) ); tfile.read((char*)&(m_bmfHeader.bfReserved2),sizeof(m_bmfHeader.bfReserved2) ); tfile.read((char*)&(m_bmfHeader.bfOffBits),sizeof(m_bmfHeader.bfOffBits)); //bitmap info header tfile.read((char*)&(m_bmiHeader.biSize),sizeof(m_bmiHeader.biSize)); tfile.read((char*)&(m_bmiHeader.biWidth),sizeof(m_bmiHeader.biWidth)); tfile.read((char*)&(m_bmiHeader.biHeight),sizeof(m_bmiHeader.biHeight)); tfile.read((char*)&(m_bmiHeader.biPlanes),sizeof(m_bmiHeader.biPlanes)); tfile.read((char*)&(m_bmiHeader.biBitCount),sizeof(m_bmiHeader.biBitCount)); tfile.read((char*)&(m_bmiHeader.biCompression),sizeof(m_bmiHeader.biCompress ion)); tfile.read((char*)&(m_bmiHeader.biSizeImage),sizeof(m_bmiHeader.biSizeImage) ); tfile.read((char*)&(m_bmiHeader.biXPelsPerMeter),sizeof(m_bmiHeader.biXPelsP erMeter)); tfile.read((char*)&(m_bmiHeader.biYPelsPerMeter),sizeof(m_bmiHeader.biYPelsP erMeter)); tfile.read((char*)&(m_bmiHeader.biClrUsed),sizeof(m_bmiHeader.biClrUsed)); tfile.read((char*)&(m_bmiHeader.biClrImportant),sizeof(m_bmiHeader.biClrImpo rtant)); //RGB RGBQUAD* rgb; m_Palette.SetSize(256); long i; for (i=0;i <m_Palette.GetSize();i++) { rgb=0; rgb=new RGBQUAD; tfile.read((char*)&(rgb->rgbBlue),sizeof(rgb->rgbBlue)); tfile.read((char*)&(rgb->rgbGreen),sizeof(rgb->rgbGreen)); tfile.read((char*)&(rgb->rgbRed),sizeof(rgb->rgbRed)); tfile.read((char*)&(rgb->rgbReserved),sizeof(rgb->rgbReserved)); m_Palette.SetAtGrow(i,(CObject*)rgb); } //image data long nSize=m_bmiHeader.biWidth*m_bmiHeader.biHeight; m_pData=(BYTE*)malloc(nSize*sizeof(BYTE)); tfile.read((char*)m_pData,nSize); } tfile.close(); return 0; } // get pixel RGBQUAD* CDib::GetPixel(LONG x, LONG y) { BYTE index=0; RGBQUAD* rgb; int nOffset=(m_bmiHeader.biHeight-y-1)*m_bmiHeader.biWidth+x; index=*(m_pData+nOffset); rgb=(RGBQUAD*)m_Palette.GetAt(index); return rgb; } ----- Original Message ----- From: "Joe" <nospam@nospam.com> Newsgroups: comp.lang.c++ Sent: Wednesday, February 04, 2004 7:51 AM Subject: Newbie read image help [/QUOTE]

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