To be more precise, in OpenCV.jl, you can do the following: 1. read image
filename = "your image" img = imread(filename) 2. draw some basic graphics (like lines and circles) over it center = cvPoint(260,275) radius = 30 color = cvScalar(0,0,255) #red thickness=4 lineType=LINE_AA shift = 0 circle(img, center, radius, color, thickness,lineType, shift) rectangle(img, cvPoint(30,30), cvPoint(150,150), cvScalar(255,0,0), thickness, lineType, shift) 3. display it imdisplay(img, "Drawing") closeWindows(0,27,"")
