Weir, JonathanYan, Weiqi2018-11-142018-11-1420122012http://196.43.179.3:8080/xmlui/handle/123456789/12571.Traditional visual cryptography; 2.Extended visual cryptography; 3.Dynamic visual cryptography; 4.Colour visual cryptography; 5.Progressive visual cryptography; 6.Image hatching for visual cryptography; 7.Applications for visual cryptographyen-USBook