Comparison with GIMP and ImageMagick terminology
It would be really useful if someone would take the time to compile a translation dictionary between the terminology used in GIMP and/or ImageMagick (and Photoshop and Netpbm, for that matter) and the one used in OpenCV, as they sometimes differ.
Just to mention one example, in GIMP you can "shrink" or "grow" a selection, but a search on the OpenCV website for the word "shrink" gives no hits, while "grow" gives many false leads. In OpenCV (and computer vision textbooks) these concepts correspond to algorithms for "eroding and dilating", which are not words that a newcomer will search for. Perhaps that OpenCV tutorial page should mention "in GIMP, this concept is called to shrink and grow a selection", or the translation dictionary should be a separate page. Either way would be useful.