Thought it would be cool to mention that markerless motion capture is something to shows up in way more places than you might think. For instance the Xbox Kinect from way back in the day, despite sort of being treated like a toy, actually used IR to sense depth and could surprisingly accurately track a person's movements as long as you face towards it. Here's a random demo I found on youtube: https://youtu.be/CBWxBWQftr4?t=48 There's actually a whole community of people that are still keeping the software for them alive for tracking your movements while playing VR games. I don't know the exact technology, but I would also wager that the software that tracks a person's face in a snapchat filter for instance is very similar. Super cool that it quickly went from something that could be used only by animation studios with millions of dollars to something that pretty much anyone can take advantage of for their own projects.
LuxuFate
Here is a direct comparison between a cheap markerless mocap vs a very expensive optical mocap system: I think it's very interesting to see the difference in the level of detail that the motion is able to be captured. https://www.youtube.com/watch?v=3WZSCVeGblU
Unicorn53547
The biggest disadvantage of markless motion capture is that we can't guarantee the accuracy and reliability. But some progress has been made to achieve this, I found an interesting demo here
Thought it would be cool to mention that markerless motion capture is something to shows up in way more places than you might think. For instance the Xbox Kinect from way back in the day, despite sort of being treated like a toy, actually used IR to sense depth and could surprisingly accurately track a person's movements as long as you face towards it. Here's a random demo I found on youtube: https://youtu.be/CBWxBWQftr4?t=48 There's actually a whole community of people that are still keeping the software for them alive for tracking your movements while playing VR games. I don't know the exact technology, but I would also wager that the software that tracks a person's face in a snapchat filter for instance is very similar. Super cool that it quickly went from something that could be used only by animation studios with millions of dollars to something that pretty much anyone can take advantage of for their own projects.
Here is a direct comparison between a cheap markerless mocap vs a very expensive optical mocap system: I think it's very interesting to see the difference in the level of detail that the motion is able to be captured. https://www.youtube.com/watch?v=3WZSCVeGblU
The biggest disadvantage of markless motion capture is that we can't guarantee the accuracy and reliability. But some progress has been made to achieve this, I found an interesting demo here