| 摘要 |
PURPOSE: To guarantee clearer picture quality at low cost by generating the picture signal having line density higher than that of a picture signal which is read even if low line density is used for a read device such as a CCD. CONSTITUTION: A read part 1 generating multivalued picture signals corresponding to density for respective picture elements of an original, a picture element interpolation part 2 increasing the number of picture elements in a main scanning direction or the number of lines in a subscanning direction by generating the interpolation picture signal of a multivalue level, which is predicted from the multivalued picture signal of the peripheral picture element of the interpolation picture element, and outputting a conversion picture signal obtained by incorporating the interpolation picture signal between the picture signals from the read part 1 and a binarization processing part 3 binarizing the picture signal from the picture element interpolation part 2 and outputting a binary picture signal expressing white and black are provided. |
