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POConversion of an image grabbed with MIL-lite to use it with OpenCV
 

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  1. POConversion of an image grabbed with MIL-lite to use it with OpenCV
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    <p>I have been searching a solution on the internet for almost 2 days but what I found doesn't seem to work on my computer.</p> <p>What I'm using : </p> <ul> <li>Matrox Vio DUO</li> <li>OpenCV 2.4.5</li> <li>MIL-lite</li> <li>Ubuntu 10.04</li> </ul> <p>I have already tried the cvcap_mil.cpp file that you can find <a href="https://code.ros.org/trac/opencv/browser/trunk/opencv/src/highgui/cvcap_mil.cpp?rev=1714" rel="nofollow">here</a>.</p> <p>This code isn't working for my project too :</p> <pre><code> IplImage* rgb_frame; rgb_frame = cvCreateImage(cvSize(w,h), IPL_DEPTH_8U, 3 ); MilImage = MbufAllocColor(MilSystem, 3, w, h,8+M_UNSIGNED,M_IMAGE + M_GRAB,M_NULL); MbufGetColor(MilImage, M_BGR24+M_PACKED, M_ALL_BAND, (void*)(rgb_frame-&gt;imageData)); rgb_frame-&gt;origin = IPL_ORIGIN_BL; cvFlip(rgb_frame,rgb_frame,0); </code></pre> <p>Do you have any idea how to do it ?</p> <p>PS : My Matrox Vio card is working fine. </p> <p>EDIT : I found a way to grab black and white images. Here is the solution for those interested :</p> <pre><code>MIL_ID MilApplication, /* Application identifier */ MilSystem, /* System identifier */ MilDigitizer, /* Digitizer identifier */ MilImageRGB, /* RGB Buffer */ MilImage1Child, /* R child */ MilImage2Child, /* G child */ MilImage3Child; /* B child */ //init MappAlloc(M_DEFAULT,&amp;MilApplication); MsysAlloc(M_SYSTEM_VIO,M_DEFAULT,M_DEFAULT,&amp;MilSystem); MdigAlloc(MilSystem,M_DEFAULT,MIL_TEXT("M_DEFAULT"),M_DEFAULT,&amp;MilDigitizer); /*get width &amp; height of cam*/ long width = MdigInquire(MilDigitizer,M_SIZE_X,M_NULL); long height = MdigInquire(MilDigitizer,M_SIZE_Y,M_NULL); MbufAllocColor(MilSystem,3,width,height,8+M_UNSIGNED,M_IMAGE+M_GRAB+M_PROC+M_DISP,&amp;MilImageRGB); /*Erster Buffer*/ /*first Child (r channel)*/ MbufChildColor2d(MilImageRGB,M_RED, 0, 0, width , height ,&amp;MilImage1Child); MbufChildColor2d(MilImageRGB,M_GREEN, 0, 0, width , height ,&amp;MilImage2Child); /*second Child (g channel)*/ MbufChildColor2d(MilImageRGB,M_BLUE, 0, 0, width , height ,&amp;MilImage3Child); /*third Child (b channel)*/ IplImage *pIplImgProcessed = cvCreateImage ( cvSize ( width,height ), 8,1 ); /* get one image */ MdigGrab(MilDigitizer, MilImageRGB); /*copy first child to buffer*/ MbufGet ( MilImage1Child, pIplImgProcessed-&gt;imageData ); // Visualise in a Qt label Mat src(pIplImgProcessed); QImage qImage = Mat2QImage(src); QPixmap pixmap = QPixmap::fromImage(qImage); ui-&gt;label_2-&gt;clear(); ui-&gt;label_2-&gt;setPixmap(pixmap.scaled(ui-&gt;label_2-&gt;size())); //release MdigFree(MilDigitizer); MbufFree(MilImage1Child); MbufFree(MilImage2Child); MbufFree(MilImage3Child); MbufFree(MilImageRGB); MsysFree(MilSystem); MappFree(MilApplication); </code></pre> <p>Thank you for your help. Thibaut.</p>
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    1. COCould you specify what "doesn't work" ? Does it crash, do you see part of the grabbed image ? Is your new buffer all black ?
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      1. POConversion of an image grabbed with MIL-lite to use it with OpenCV
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    2. COI can grab images with the functions of MIL-Lite and show them in a Window. If I use the code I linked to make the conversion, the image i'm getting is green with horizontal blue stripes (The new buffer is not black).
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    3. COI've just had better results. Now I can see that i'm grabbing an image with shifted pixels. The bottom of the image is filled with green.
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