Image rotation using intel image processing

This is a discussion on Image rotation using intel image processing within the Windows Programming forums, part of the Platform Specific Boards category; Dear friends i am using intel image processing library to rotate my image. if the image width is divesible by ...

  1. #1
    Registered User
    Join Date
    Nov 2002
    Posts
    5

    Talking Image rotation using intel image processing

    Dear friends

    i am using intel image processing library to rotate my image. if the image width is divesible by 8 , my image rotates fine. Otherwise i see garbage after rotation.i am using following code for this purpose. How can i get rid of it.


    jcprops.JPGFile =ofn.lpstrFile;
    if (ijlRead(&jcprops, IJL_JFILE_READPARAMS) != IJL_OK)
    {

    ijlFree(&jcprops);
    return(FALSE);
    }


    img1 = CreateImageHeaderFromIJL(&jcprops,NULL);
    iplAllocateImage(img1,0,0);


    img = CreateImageHeaderFromIJL(&jcprops,NULL);
    iplAllocateImage(img,0,0);

    jcprops.DIBBytes = (BYTE*)img1->imageData;
    jcprops.DIBWidth = wt;//width;//jcprops.JPGWidth;
    jcprops.DIBHeight =-ht;// -height;//jcprops.JPGHeight;
    jcprops.DIBChannels = 3;



    //--------------------------------------------------//

    ipad = (int) fmod(wt,8);
    jcprops.DIBPadBytes =ipad;

    //----------------------------------------------------//


    switch(jcprops.JPGChannels)
    {
    case 1:
    {
    jcprops.JPGColor = IJL_G;
    break;
    }
    case 3:
    {
    jcprops.JPGColor = IJL_YCBCR;
    break;
    }
    default:
    {
    jcprops.DIBColor = (IJL_COLOR)IJL_OTHER;
    jcprops.JPGColor = (IJL_COLOR)IJL_OTHER;
    break;
    }

    }



    ijlRead(&jcprops,IJL_JFILE_READWHOLEIMAGE);

    iplGetRotateShift(0.0,5.0,0.0, &xshift, &yshift);
    iplRotate(img1, img, 5.0, 0,0,IPL_INTER_LINEAR );

  2. #2
    Guest Sebastiani's Avatar
    Join Date
    Aug 2001
    Location
    Waterloo, Texas
    Posts
    5,699
    My docs say:

    Code:
    jcprops.DIBWidth = (((width * num_bits) + 31) & ~31) >> 3;
    jcprops.DIBPadBytes = jcprops.DIBWidth - (jcprops.DIBChannels * width);
    Code:
    bool fun(bool value)
    {
        return std::pow(std::exp(1), std::complex<float>(0, 1) 
        * std::complex<float>(std::atan(1)*(1 << (value + 2))))
        .real() > 0;
    }

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