From NTV's "Kasou Taishou" show, a group of ameature performers recreate a Japaense baseball scene with two view (top and side) with slow motion all in the same manner the commonly known "Ping Pong Matrix" clip was concieved: people dressed in solid colors camaflouge themselves against a background while transforming part of themselves into objects. In this case, multiple people are used to create the slow motion effects, signs are carried by people dressed in black, and even the ball.
enjoy the video.