Bildkodierungsgerät

摘要

An image encoding apparatus which is capable of keeping a quality of an encoded image even though a part of information is lost on a communication line, the image encoding apparatus includes a unit (36) for quantizing transform coefficients and for outputting a quantized output signal and a quantized error signal, a unit (37) connected to the quantizing unit (37) for controlling a quantizing level used in the quantizing unit (37) so that the transform coefficients is quantized in accordance with the controlled quantizing level, an error quantizing unit (38) connected to the quantizing unit (36) for quantizing the quantized error signal output from the quantizing unit (36), and an error encoding control unit (39) connected to the error quantizing unit (38) for controlling a requantizing level used in the error quantizing unit (38) so that the quantized error signal is requantized in accordance with the controlled requantizing level. <IMAGE> <IMAGE>