Football pitch
The pitch is rectangular in shape. The longer sides are called touchlines. The other opposing sides are called the goal lines. The two goal lines must be between wide, and be the same length. The two touchlines be between long, and be the same length. All lines on the ground must be equally wide, not to exceed . The corners of the pitch are marked by corner flags.
RoboCup Small Size League
Two teams of six robots which are limited to an 18 cm diameter and 15 cm height play soccer with an orange golf ball. They are identified and tracked by four overhead cameras connected to an off-field computer. The field size is 9metersx6meters. Then robots' and balls' status including their position and id are sent to teams' computers. Their AI software sends commands to the robots based on the vision data.