[instaviz-users] Recog 1.0.2

[Juan Antonio Navarro Pérez]

Good work!

I've been playing a bit with this and the earlier version of the shape
recognizer. I have to say that it works quite well, I was surprised by
how consistently well detects shapes. Anyway, a few comments on my
experience:

* When you purposefully draw incoherent shapes, or just random
strokes, shapes tend to be accepted as ellipse or diamond. I don't
know what should be better, perhaps to let the user know that the
shape was not recognized as a valid shape?

* I'm guessing that the most popular shapes will be squares and
circles. When I try to draw them, most of the times they're recognized
appropriately, but there are a few cases in which they end up being
recognized as rectangle or ellipse. Would it be a good idea to skew
the recognizer so that it tends to detect mostly squares and circles,
and only detect a rectangle/ellipse if the shape is really thin?

* Finally, I've found an interesting "bug" in the recognizer. When you
draw a square with the following strokes: down, right, up, left, down
(i.e. the last/first side is drawn twice), then the square tends to be
recognized as an ellipse. I'm guessing ellipses tend to have more
overlapping when drawing than squares. Anyway, I don't know how much
people would draw a "double side" like that in real life. (I know I
didn't when providing data with the previous Guesstur app).

Well, these are my comments so far. Again thanks for the good work,
I'm looking forward to seeing the final result!

Best,
Juan

On Sat, Oct 4, 2008 at 4:14 PM, Glen Low <glen.low at pixelglow.com> wrote:
> Hi All
>
> So what do you all think about the shape recognizer?
>
> http://guess.pixelglow.com/recog/
>
> This new version has:
>
> 1.      Fixed intermittent crash drawing certain lines, especially if drawn
> quickly.
> 2.      Now recognizes diamonds even if they are rotated. This does mean
> that rotated squares are still squares (unlike with 1.0.1); to get a diamond
> you have to make it skinnier. A picture here is worth a thousand words:
>
>
>
>
>
>
>
>
> Cheers, Glen Low
>
>
> ---
> pixelglow software | simply brilliant stuff
> www.pixelglow.com
> aim: pixglen
>
>
> _______________________________________________
> instaviz-users mailing list
> instaviz-users at pixelglow.com
> http://lists.pixelglow.com/listinfo/instaviz-users
>
>



-- 
Juan Antonio Navarro Pérez
http://www.mpi-sws.mpg.de/~jnavarro/