Abstract: A reference-data storing unit stores reference data for determining whether to display image data by overwriting display data. A data converting unit converts the image data into display image data. A transparency determining unit determines whether a first pixel value of the display image data obtained through a color conversion by the data converting unit coincides with a second pixel value of the reference data stored in the reference-data storing unit. A data transfer unit that transfers, when it is determined that the first pixel value coincides with the second pixel value, the display image data to a display address space.

Abstract: A reference-data storing unit stores reference data for determining whether to display image data by overwriting display data. A data converting unit converts the image data into display image data. A transparency determining unit determines whether a first pixel value of the display image data obtained through a color conversion by the data converting unit coincides with a second pixel value of the reference data stored in the reference-data storing unit. A data transfer unit that transfers, when it is determined that the first pixel value coincides with the second pixel value, the display image data to a display address space.

Abstract: An image processing system including an information processing unit, an image processing unit, a transmitter, and a charging unit. The image processing unit is connected to the information processing unit and conducts image processing selected by a user to obtain image data. The transmitter transmits the image data to an external receiver via a network. The charging unit charges a fee corresponding to the image processing selected by the user before the image data is transmitted to the external receiver.