Method and apparatus for calculating distances and...

Details Method and apparatus for calculating distances and... Method and apparatus for calculating distances and...

2006-12-21

2009-12-15

Rogers, Scott A (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003240, C358S504000, C358S406000, C382S112000, C356S402000, C356S421000

Reexamination Certificate

active

07633648

ABSTRACT:
Upon observing homogeneity in page image by the human eye, a permissible level associated with color reproduction with respect to an identical color signal changes depending on the distance from an interest point. Since the conventional homogeneity in page image evaluation scheme doesn't take the above characteristics into consideration, the correlation between a finished image and the evaluation result cannot be exploited fully. Hence, image data, which forms an image with identical density within a range to be evaluated in one page, is output to a printer to measure reflection characteristics of the image at points on output of the printer. One point is set as a reference point, and distances between the reference point and the remaining points, and differences of the reflection characteristic between the reference point and the remaining points are calculated. The image quality within the range is evaluated based on the distances and differences.

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Official Action cited in corresponding U.S. Appl. No. 11/615,353.
Related co-pending U.S. Appl. No. 11/614,353; Nobuatsu Sasanuma et al.; “Color Processing Method and Apparatus Thereof”; filed Dec. 21, 2006; Spec. pp. 1-62; Figs. 1-22.

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