Optical reproducing system for multimedia information recorded with code data having function for correcting image reading distortion

摘要: An image pickup unit optically reads, from an information recording medium having a portion that records multimedia including at least one of audio information, video and digital code data in the form readable pattern, pattern. A conversion converts pattern read by into as image. block extraction extracts predetermined processing converted unit. reference coordinate calculation calculates position for determining reading approximation using Nth-degree curve passing centers plurality dots arranged relative positions on upon