Picture signal encoding method and apparatus, picture signal transmitting method, picture signal decoding method and apparatus and recording medium

摘要

There is provided a picture signal encoding method in which a signal obtained on processing picture signals with encoding accompanying real-number calculations and the resulting quantized signal is outputted, locally decoded data of the encoded data and data prevailing prior to execution of the real-number calculations are compared to each other to find a difference signal. This difference signal is added to decoded data for signal correction for realizing reversible encoding and the encoding/decoding of high-precision picture signals. Also provided are a corresponding signal encoding apparatus, a picture signal transmitting method, a picture signal decoding method and apparatus and a recording medium having thereon recorded signal decodable by the picture decoding apparatus