An image processing device includes an input portion for selecting
encoding processing for an image to be filed as a monochrome image from
first encoding processing according to a first compression method for
compressing multilevel image data and second encoding processing
according to a second compression method for compressing binary image
data. An encoding processing portion performs encoding processing on the
image to be filed as the monochrome image. The input portion includes a
display and first and second input portions. The display displays a list
of images to be filed as the monochrome image. The first input portion is
used to specify an image shown on the display and to select encoding
processing to be performed on the specified image. The second input
portion is used to select the first or second encoding processing to be
performed on the specified image.