Reference tone settings for monotone images
AssigneeSeiko Epson Corporation
InventorsSeishin Yoshida, Kazumichi Shimada
Life of this patent
Estimating the term…
Abstract
A tone setting screen that includes a tone specifying area 110 for specifying a color tone of a monotone image using a single specification point is disclosed. A monotone image tone is determined according to the position of the specification point specified in the tone specifying area 110. The tone specifying area 110 is defined on the a* b* plane in the L*a*b* color space, where three reference tone points Pneutral, Pwarm, and Pcool, for the neutral, warm, and cool tones are disposed linearly in advance in the tone specifying area 110.
Claims18
A method for setting a color tone for use in printing a monotone image, comprising the steps of:
- (a) displaying a tone setting screen that includes a tone specifying area for specifying a color tone for a monotone image with a single specification point;
- and
- (b) setting the color tone of the monotone image according to the position of the specification point which is specified in the tone specifying area, wherein
- (i) the tone specifying area is defined on an a*-b* plane in L*a*b* color space,
- (ii) the tone specifying area includes three reference tone points having a same L* value, the three reference tone points representing a warm tone, a neutral tone, and a cool tone, which are disposed linearly in advance within the tone specifying area, and
- wherein, when a light blue print medium is used in the printing, a distance ΔEn-w between the reference warm tone point and the reference neutral tone point is set larger than a distance ΔEn-c between the reference neutral tone point and the reference cool tone point.
A device for setting a color tone for use in printing a monotone image, comprising:
- a user interface module configured to display a tone setting screen that includes a tone specifying area for specifying a color tone for a monotone image with a single specification point;
- and
- a tone setting module configured to set the color tone of the monotone image according to the position of the specification point which is specified in the tone specifying area, wherein
- (i) the tone specifying area is defined on an a*-b* plane in L*a*b* color space,
- (ii) the tone specifying area includes three reference tone points having a same L* value, the three reference tone points representing a warm tone, a neutral tone, and a cool tone, which are disposed linearly in advance within the tone specifying area, and
- wherein, when a light blue print medium is used in the printing, a distance ΔEn-w between the reference warm tone point and the reference neutral tone point is set larger than a distance ΔEn-c between the reference neutral tone point and the reference cool tone point.
A printer driver program, stored on a computer readable medium, for producing print data from image data, comprising:
- a user interface module causing a computer to display a tone setting screen that includes a tone specifying area for specifying a color tone for a monotone image with a single specification point;
- a tone setting module causing the computer to set the color tone of the monotone image according to the position of the specification point which is specified in the tone specifying area;
- and
- a print data generator causing the computer to generate print data for use in printing the monotone image with the set color tone on a print medium, wherein
- (i) the tone specifying area is defined on an a*-b* plane in L*a*b* color space,
- (ii) the tone specifying area includes three reference tone points having a same L* value, the three reference tone points representing a warm tone, a neutral tone, and a cool tone, which are disposed linearly in advance within the tone specifying area, and
- wherein when a light blue print medium is used in the printing, a distance ΔEn-w between the reference warm tone point and the reference neutral tone point is set larger than a distance ΔEn-c between the reference neutral tone point and the reference cool tone point.
Dependencies are inferred from the claim text.