4 ms·
It only works if the starting point of a gesture is as expected. If I start a rectangle in the top right corner then it is characterized as a caret. Only a star
by Gys 5y ago
It only works if the starting point of a gesture is as expected. If I start a rectangle in the top right corner then it is characterized as a caret. Only a start in the top left results in a rectangle.
- bobbiechen 5y agoRight, this is expected. I would think of a "gesture" as a series of points over time (relative to the starting point) - it is path dependent, so a clockwise circle is recognized differently from a counter-clockwise circle. The paper (citation 11 for the $1 version) goes into more detail. One neat feature is rotation invariance, where you can draw a tilted version and still have it be recognized.
- Tuna-Fish 5y agoI added a second rectangle as an example starting from a different point, and it never misrecognized any of my rectangles for carets or square brackets again.
- RantyDave 5y agoLikewise, I added a circle going the "other way" and it got it every time. Cool piece of code, eh?
- airstrike 5y agoAdding left and right parenthesis started messing up with the square brackets, but then I added a couple more of each square and round brackets and it worked perfectly. Differentiating from lowercase y and g was next to impossible, though...
- mkl 5y agoTry the point cloud version, which doesn't care at all: https://depts.washington.edu/acelab/proj/dollar/pdollar.html https://depts.washington.edu/acelab/proj/dollar/pdollar.html
- thomasahle 5y agoThe first one recognizes my "five point star" as "delete". The cloud one as an "X"..
- ziml77 5y agoI was disappointed by that at first too, but then remembered that it says it detects gestures. A gesture is a series of motions, not the final shape.
- tyingq 5y agoLike my Palm Pilot :) https://designobserver.com/media/images/Palmsmall_525.jpg https://designobserver.com/media/images/Palmsmall_525.jpg
- aidenn0 5y agoPalm apparently had to change graffiti later to use multiple strokes for some letters, as someone had a patent on letter-recognition via single-stroke letters.
- horsawlarway 5y agoThis varied a lot for me during testing - It looks like it's actually comparing rotations of the gesture to find a match It would nail the zigzag and most of the star/box shapes even if I intentionally started in a different place (Very first thing I tested, I'm left handed and start characters/shapes in different places) It did not handle shapes that are rotationally similar - ex: right square bracket starting from the bottom is always detected as left square bracket, probably because the gesture matches the left bracket, rotated 180 degrees. It also flubs arrows going right to left (they always come up as v for me)
- scotty79 5y agoIt's more about not where you start and how rotated is what you are drawing, but rather about if you are drawing it clock-wise or counter clock-wise.