Image encoder and decoder, method of codificau00c7u00e7o image, program for image codificau00c7u00e7o, means of gravau00c7u00e7o legu00cdvel by computer, method of decodificau00c7u00e7o image, program for image decodificau00c7u00e7o and bit stream encoded by image.

摘要

Image encoder and decoder, method of codificau00c7u00e7o image, program for image codificau00c7u00e7o, means of gravau00c7u00e7o legu00cdvel by computer, method of decodificau00c7u00e7o image, program for image decodificau00c7u00e7o and bit stream encoded by the image.A decoder including: an image generation unit which generates predicted image predicted image according to a plurality of modes of prognosis and methods of image generation predicted: a unit of trial mode prognosis evaluating eficiu00eanc Would an image emitted from the predicted image generating unit for judging a predicted modePrognosis is predetermined; and an encoding unit that submits a output unit of trial mode prediction for encoding of variable length.The unit of trial mode of prognosis judge, based on a control signal predetermined one of a common mode of prognosis and a prediction mode separately, is used by the respective color components forming the input image signal, and multiplexing information on The control signal into a stream of bits.Multiplexing information so as to prognosis in the common bit stream when the mode of prognosis common is used, and multiplexing information prediction mode for each of the color components in the stream of bit when the mode of the common prognosis is not used.