The light fantastic
Sony confirmed that the lightbar on the controller is indeed used to track player location in the room - Norden discussed dynamic split-screen with the gamer on the left automatically getting the left screen as opposed to it being allocated by default to player one, with the views shifting if players swapped sides. Similar to PlayStation Move, different players receive different lightbar colours: the first pad gets traditional PlayStation blue, the second gets a red light while the third and fourth controllers illuminate with green and pink respectively - Norden explaining that the colour choice correlates with the colours of the PlayStation symbols on the face buttons. Devs have control over the lightbar to a certain extent, so the LEDs could flash when a player takes damage during a game, for example. The lightbar also flashes while charging, with the pad able replenish its batteries even when the console is in standby.
Applications for the PlayStation 4 Eye camera were also discussed in depth. Firstly, a 1280x800 resolution per camera with 12-bit colour precision and a 60Hz refresh was confirmed, although it was also revealed that developers can trade pixels for frame-rate and that, at its fastest, PlayStation 4 Eye can update at 240Hz. We initially thought that the dual cam would be used for 3D applications and while the tech can triangulate depth in this way, Norden revealed a great many other uses too - the same shot can be acquired simultaneously at different levels of exposure, for example, giving a high-dynamic range effect and boosting low-light performance, while the frame-rate of the camera can be synchronised with the frame-rate of the game. Gesture-tracking and face-tracking libraries are also being provided.
Norden also hinted at Kinect-style gameplay, saying that the PS4 would support controller-free gameplay as well as custom props (reminding the audience of
the old PS2 title that was bundled with pom-poms).
"You can get a really good lock on items in the room," he shared. "Cards, AR markers, wrist bands, clothing, LEDs, anything you can think of, you can track - LEDs work really well because it's a nice constant light source but you can do pretty much anything."
The enhanced precision of the PlayStation 4 Eye feeds back into an improved experience using the already superb Move controller:
"[PS4 Eye] actually provides much better tracking than the PS3 camera. Wider field of view, higher resolution," Norden confirmed. "It's just more robust in general because there's more power. Better AR, better head-tracking, better marker tracking, better everything."
Sony revealed a lot of new information on the PS4 Eye dual-cam, including its ability to match Kinect in a number of ways. It even has its own six-axis sensor so the console knows where the camera is looking and whether its field of view needs to be tweaked.
http://www.eurogamer.net/articles/digitalfoundry-inside-playstation-4