Dott is specialized for pictures and other two dimensional surfaces. Furthermore, a pictures needs to have a certain amount of detail to be recognizable and trackable. Fuzzy edges and soft gradients is probably not going to work (think mist or the way shadow falls on a sphere). Also, if you have too many things in a picture which resemble each other Dott will be confused (think Andy Warhol’s Marilyn Monroe collage). Things that look like static TV noise are also bad (think closeups of gravel or grass). Ideal pictures have distinct geometrical shapes with plenty of corners (think Kandinsky). Photos have more details in them than you think and most will actually work just alright, just be a bit careful with too shallow depths of field and motion blurs. In short – the only way is to try. Dott will let you know if it doesn’t like it. The good news is that Dott only needs to recognize the picture. Then other algorithms take over and latch on to the picture, frame, surrounding, wall paper, and do the actual tracking.
So, how about three dimensional objects? Things that can be approximated to a two dimensional surface when seen from afar may work (think facades, walls, key pads, or some flat facet in an otherwise three dimensional shape). We are working on 3D recognition too, but it will probably be a while before we have something to show. (But when we do, we will make sure to tell you because it would be huge! Mainly because it’s so darn difficult to work with symmetries and slick textures.)
And lastly, a word of caution regarding lights: Try to avoid glares and reflections in pictures printed on glossy material or pictures framed behind glass. Dott can deal with some of it, but not too much. Capture your picture in “even light” (because you don’t make any friends by saying “homogeneous lighting conditions”). This is particularly important if your picture is somewhere outside. The best option is of course to use the original digital image.
Ok, that’s enough reservations (or what we in Swedish call “brasklapp”. You see, once there was this Bishop called Brask and he…). Just go on and try! You’ll see that Dott is very capable.