Apparatus, method, signal and computer program product configured to provide output image adjustment for image files

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(11)

EP 1 187 069 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION

(48)	Corrigendum issued on:
	02.10.2002 Bulletin 2002/40

(43)	Date of publication:
	13.03.2002 Bulletin 2002/11

(21)	Application number: 01121079.6

(22)	Date of filing: 03.09.2001

(51)	International Patent Classification (IPC)⁷: G06T 11/00

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

01.09.2000 JP 2000265794
13.10.2000 JP 2000312991
18.07.2001 JP 2001218744

(71)	Applicant: SEIKO EPSON CORPORATION
	Shinjuku-ku, Tokyo 163-0811 (JP)

(72)	Inventors:
	Kuwata, Naoki, Seiko Epson Corporation Suwa-shi, Nagano-ken 392-8502 (JP) Nakami, Yoshihiro, Seiko Epson Corporation Suwa-shi, Nagano-ken 392-8502 (JP) Edatsune, Isao, Seiko Epson Corporation Suwa-shi, Nagano-ken 392-8502 (JP) Fukasawa, Kenji, Seiko Epson Corporation Suwa-shi, Nagano-ken 392-8502 (JP)

(74)	Representative: Winter, Brandl, Fürniss, Hübner, Röss, Kaiser, Polte Partnerschaft
	Patent- und Rechtsanwaltskanzlei Alois-Steinecker-Strasse 22 85354 Freising 85354 Freising (DE)

(54)	Apparatus, method, signal and computer program product configured to provide output image adjustment for image files

(57) An apparatus, method, signal and computer program product are configured to provide an output image adjustment for image files. A CPU of a color printer performs gamma correction and a matrix operation M on RGB color space image data derived from a matrix S operation. The CPU performs gamma conversion on image data using established gamma values. Matrix operation M converts the RGB color space to the XYZ color space. When executing matrix operation M, the CPU refers to a color space tag, contained in an image file produced at an image generating device, so as to preserve the color space used during synthesis of the image data, and performs the matrix operation using a matrix (M) corresponding to color space written in the file.