JP2656031B

PURPOSE:To obtain a binary reproduced picture with high quality by using a binarizing processing means in matching with a character, a graphic, a line drawing, a photograph and a dot photograph so as to process them in parallel in a picture where they exist in mixture thereby forming a synchronized output and adding the selection of each picture or its area designation. CONSTITUTION:An input picture is retarded by two picture elements as the input picture element synchronization and outputs of a binarizing processing means 2 (dither method) and a binarizing processing means 3 (simple binarizing method) are retarded respectively by a time corresponding to four picture element processing so as to output binarized outputs EDO, DHO and BIO of each means in parallel synchronously with the picture element clock GCKO. Since an input picture mixed with various pictures is processed by several kinds of characteristic binarized processing means in parallel at a high speed simultaneously and synchronized output signals are obtained in this way, a binary reproduced picture with high quality is obtained in a picture where various kinds of pictures exist in mixture.