How to display the image loaded with opencv in the window position? -How can I convert an image in any format loaded by opencv into bitmap or Dib, which can be drawn by GDI?

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Void showimageauto (iplimage * pimg, cwnd * WND );
Void showimage (iplimage * pimg, cwnd * WND, bitmapinfo * BMI );
Void fillbitmapinfo (bitmapinfo * BMI, int width, int height, int bpp );

You can use iplimage to draw an image on the MFC interface. However, the function has bugs and does not support single-channel, 8-bit grayscale display.
The main reason is that the color palette is used for 8 bitmap. In the bitmapinfo structure of windows, only one rgbquad space is allocated, and the color in the online code is
The rgbquad structure is assumed to be 256, so the write memory violation!
In addition, there is a CDC resource leakage problem.

I fixed the following:

# Include "stdafx. H "<br/> # include" opencvhelper. H "</P> <p> namespace opencvhelper <br/>{</P> <p> // generates the bitmap information for Windows <br/> void fillbitmapinfo (bitmapinfo * BMI, int width, int height, int bpp) <br/>{< br/> assert (BMI & width> 0 & height> 0 & <br/> (bpp = 8 | bpp = 24 | | bpp = 32 )); </P> <p> bitmapinfoheader * bmih = & (BMI-> bmiheader); </P> <p> memset (bmih, 0, sizeof (* bmih )); </P> <p> bmih-> bisize = sizeof (bitmapinfoheader); <br/> bmih-> biwidth = width; <br/> bmih-> biheight =-ABS (height); <br/> bmih-> biplanes = 1; <br/> bmih-> bibitcount = BPP; <br/> bmih-> bicompression = bi_rgb; </P> <p> If (bpp = 8) <br/>{< br/> rgbquad * palette = BMI-> bmicolors; <br/> int I; <br/> for (I = 0; I <256; I ++) <br/>{< br/> palette [I]. rgbblue = palette [I]. rgbgreen = palette [I]. rgbred = (byte) I; <br/> palette [I]. rgbreserved = 0; <br/>}</P> <p> // automatically draws an iplimage image to the cwnd class. <br/> void showimage (iplimage * pimg, cwnd * WND, bitmapinfo * BMI) <br/>{< br/> CDC * PDC = WND-> getdc (); <br/> HDC = PDC-> getsafehdc (); <br/> crect rect; <br/> WND-> getclientrect (& rect ); </P> <p> If (BMI-> bmiheader ). bibitcount = 8) <br/>{< br/> cpalette pal; <br/> hpalette hpal = NULL; <br/> hpalette holdpal = NULL; <br/>:: setpaletteentries (hpal, 0,256, (lppaletteentry) BMI-> bmicolors); <br/> holdpal =: selectpalette (PDC-> getsafehdc (), hpal, true ); <br/>}< br/>: setstretchbltmode (PDC-> m_hdc, coloroncolor); <br/>: stretchdibits (PDC-> getsafehdc (), <br/> rect. left, <br/> rect. top, <br/> // pimg-> width, pimg-> height, <br/> rect. right-rect.left, rect. bottom-rect.top, <br/> 0, <br/> pimg-> width, pimg-> height, pimg-> imagedata, BMI, dib_rgb_colors, srccopy ); </P> <p> WND-> releasedc (PDC); <br/>}</P> <p> // automatically draws an iplimage image to the cwnd class) <br/> void showimageauto (iplimage * pimg, cwnd * WND) <br/> {<br/> If (0 = pimg | 0 = WND) <br/>{< br/> return; <br/>}</P> <p> bitmapinfo * BMI; <br/> unsigned int buffer [sizeof (bitmapinfoheader) + sizeof (rgbquad) * 256]; <br/> BMI = (bitmapinfo *) buffer; </P> <p> fillbitmapinfo (BMI, pimg-> width, pimg-> height, pimg-> depth * pimg-> nchannels); </P> <p> showimage (pimg, WND, BMI ); <br/>}</P> <p>} // namespace

How to display the image loaded with opencv in the window position? -- How can I convert an image in any format loaded by opencv into bitmap or Dib, which can be drawn by GDI?

Transferred from:
Http://blog.csdn.net/daiyuchao/archive/2007/05/12/1605963.aspx