Fujitsu Corporation

Kouki Ishihara

Kouji Maeda

Shigeyoshi Nakamura

Keizou Ueno

Kazuhiro Tamada

Hiroyuki Kaneda

Eiichi Ebihara

Takamitsu Aoki

Masayuki Horii

Hiroshi Yoshimura

Toshio Konaka

Akihisa Sota

Moriaki Sugimoto

A color image is scanned in the matrix direction by the number of colors calculating unit and the number (A) of colors of different full color pixel values is counted. In this instance, each time the number (A) of colors is counted up, a pallet forming unit sequentially stores the full color pixel values as representative colors into entries and forms a subtractive color pallet. When the number (A) of colors exceeds the number (n) of entries of the subtractive color pallet, a transfer format discriminating unit counts the number (N) of transfer pixels up to the end of one-preceding row and compares a transfer data amount by a full color format with a transfer data amount by a pallet format in the number (N) of transfer pixels, thereby allowing the data transfer by the color format of a smaller one of the transfer data amounts to be executed by a data transfer unit.

Color image transfer processing apparatus and method, color image

A process discriminating unit allows an optimum converting process among a first magnification processing unit, a second magnification processing unit, a first reduction processing unit, a second reduction processing unit, and a third reduction processing unit to be executed on the basis of a conversion magnification (K), a resolution (D), and an image size. Particularly, each of the second magnification processing unit, first reduction processing unit, and second reduction processing unit magnifies an original image to a virtual image of a dot size obtained by magnifying a target image by 2 or 4 by an interpolation based on a simple repetition by a nearest neighborhood method and, after that, reduces to the target image in which the pixel value is obtained by averaging a plurality of pixels corresponding to one target pixel of the virtual image.

Apparatus and method for converting image size and recording medium

Growing community of inventors

Kawasaki, Japan

Kouki Ishihara