//where img and colorImg are of type ofxCvColorImage and contain 1 frame of video
    IplImage* srcImg = colorImg.getCvImage();
    IplImage* newImg = cvCreateImage(cvGetSize(srcImg), srcImg->depth, srcImg->nChannels);
    cvSmooth(srcImg, newImg, CV_MEDIAN, 7,0,0,0);
    img.setFromPixels((unsigned char*)newImg->imageData,newImg->width,newImg->height);
    img.draw(360,20);