SportVU tells us defensive and offensive alignment relative to ball location, shot trajectory and the number of dribbles and passes made by a team and player.
Players, referees and the ball with an exact location in x,y coordinates are tracked. 25 times a second, software analyzes the video, and stores information about where everyone is and what is occurring. 1,000,000 entries per game is added to databases. Without having to chart and track a game by hand and eye, player position and defender proximity to a player are now available. In another words, defense is more quantifiable with what SportVu brings to the table.
Here’s an article on how the Raptors use SportVu technology.
In the near future, Sportvu could allow coaches to make real-time in-game adjustments to their play calling and could allow the broadcasters to use the same graphics and analysis that now is available only after the game. NBA also plans to automate some of the calls now made by human referees and scorekeepers
Starting from 2013-14 season, all 30 teams have installed SportVu cameras thanks to the NBA & Stats LLC partnership.