3 ms·
A lot of this has changed since then, of course. No grass swatches anymore! We have a lot more computer horsepower to throw at the problem now, plus a lot of ga
by RogerL 12y ago
A lot of this has changed since then, of course. No grass swatches anymore! We have a lot more computer horsepower to throw at the problem now, plus a lot of gained experience.
We have a bay in our lab with a to-scale football field where we can run indoor tests, but on the field it is computer vision that is doing it all. The cameras are instrumented to get attitude, zoom, and so on (we have to modify the lens to get the accuracy we need), and then of course you have to compensate for lens distortion. If you look closely, the "line" is not a line, but a curve. If we drew a line it would look stupid, and not reg well in most parts of the image.
- AndrewKemendo 12y agoVery cool. Are you guys doing statistical filtering at all or is it strictly palette matching? Seems like your data inputs are specific enough that you are trying to get where you don't need much buffer on either side of the wavelength.
- RogerL 12y agoI will have to ask. I don't work with this technology, and haven't touched the code. I work in computer vision for baseball, with a completely different set of challenges.
- kanamekun 12y agoIs an automated "yellow box" to show the strike zone ever going to happen? I feel like that would have a huge impact on the viewing experience!
- kd0amg 12y agoThere might be trouble with depth perception there. When I watch baseball, I can't easily tell at what point the ball crosses the plate in the behind-the-mound view. When a pitcher throws a breaking ball, I usually have to look at the non-overlay strike zone they show afterwards to know where the ball was when it passed the batter.
- unclebucknasty 12y agoI dunno. I kind of like trying to judge it visually and waiting for the ump's call. I can also imagine MLB having similar concerns as the NFL when, for instance, they insisted on removing the line as the ball is being spotted. That is, if they are showing the strike zone and the ump's call seems inconsistent, then it wouldn't be a "good look" for the sport.