seen a few posts with folks using cameras for overhead tracking. i'm doing this very thing for a project -- i'm after reliable top-down tracking of multiple moving objects, and good persistent sorting. i have a system that works pretty well, but in the interest of trying to improve it i am thinking of adding additional cameras.
from the people who have worked with overhead tracking before, i'd like to hear if you went with a single camera, or with multiple cameras? has anyone seen significant benefits when moving from one source to multiple sources? i'm thinking of 4 cameras + 4 channel audio: at what point are there fw bus bandwidth or cpu issues to consider?