Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2006-12-21
2009-12-01
Rogers, Scott A (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S003240, C358S504000, C358S518000, C356S406000, C356S421000
Reexamination Certificate
active
07626728
ABSTRACT:
Color reproducibility needs to be evaluated in consideration of the influence of homogeneity in page image. Hence, a first chart is formed from an image of a uniform density of a region to be evaluated, and data associated with the spectral reflectances of plural points on the first chart are input. Based on the data obtained from the first chart, color differences between a predetermined point and other points on the first chart are calculated. When the calculated color differences fall within a permissible range of heterogeneity of colors in the region, a second chart is formed from an image corresponding to a color target, and data associated with the spectral reflectances of plural points on the second chart are input. Color differences are calculated from the data obtained from the second chart and data associated with the spectral reflectance of the color target.
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Related co-pending U.S. Appl. No. 11/614,296; Nobuatsu Sasanuma et al.; “Image Quality Evaluation Method and Apparatus Thereof”; filed Dec. 21, 2006; Spec. pp. 1-24; Fig. 1-8.
Hayashi Miyoko
Itagaki Tomohisa
Saishoji Toshio
Sasanuma Nobuatsu
Takayama Satoshi
Canon Kabushiki Kaisha
Rogers Scott A
Rossi Kimms & McDowell LLP
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