Novel automatic size measurement method using a digital camera

Automatic size measurements have been intriguing lately since they have a lot of applications such as cyber-physical interaction, three-dimensional multimedia entertainment games, navigation and target tracking, real-time surveying of the environment using artificial intelligence. Conventional accurate approaches are mostly based on the active techniques, including laser-beams, ultrasonics, radio-frequency transceivers, etc. These existing approaches can recognize neither the object nor the context of the scene; thus advanced image processing methods using visible-light digital cameras are more preferable on the other hand. In this paper, we utilize the basic visible-light propagation principles to build a novel efficient automatic size measurement algorithm, which can be employed by one or two digital cameras. The experimental results show that less than 3% of striking accuracy can be achieved on average using our proposed new method.