TOKYO - The protection of cultural properties is going digital, with Buddhist sculptures, old paintings and World Heritage sites like Beijing's Forbidden City being preserved as digital images and in video. The move is a result of not just progress in image processing technology but of awareness of the need to protect cultural assets from deterioration and damage from disasters. Two printing companies, Dai Nippon Printing Co. (DNP) and Toppan Printing Co., both based in Tokyo, are charging millions of yen for the digital content...