Awareness and Privacy Balanced System Using Functional Layered Video Coding

概要

論文の詳細を見る
This paper proposes a new video communication system which transmits "awareness" at very low bit rate in usual, and displays a details "video" by sending additional information on demand. The "awareness" means information without "privacy" related details and it expresses "existence" or "motion" of a person, and so forth. The proposed system decomposes a person's region into (a) basic layer which contains awareness and (b) enhancing layer which contains other details information. This processing is implemented by basic constituent technology of the JPEG2000 such as wavelet transform and bit plane decomposition. The basic layer contains (1) person's region, (2) a part of bit plane, and (3) a part of bandwidth image. So that, the awareness information is transmitted at very low bit rate. It is confirmed by quantitative measurement that bit rate can be reduced to 1/10 compared with exiting method. The system can be applied to use in the filed of welfares, for example, monitoring and nursing-care for an elderly or a patient from distance.