Image analysis – Histogram processing – With a gray-level transformation
Reexamination Certificate
2005-03-08
2005-03-08
Grant, II, Jerome (Department: 2626)
Image analysis
Histogram processing
With a gray-level transformation
C358S003100, C358S003270
Reexamination Certificate
active
06865294
ABSTRACT:
An image reproducing apparatus, that outputs and reproduces an image having a greater number of gradation levels than that of input image data, is comprised of a buffer memory that accumulates input image data for a plurality of lines; an image data storing unit that extracts and stores image data of region of a predetermined size from the buffer memory; a specified portion detecting unit that detects a specified portion in which gradation of image data varies slowly from the predetermined region of stored image data; and an intermediate density data generating unit that generates, based on a result of detection by the specified portion detecting unit, intermediate density data composed with step smaller than the minimum value of a step between different gradation levels of image data. In the above apparatus, an image having a greater number of gradation levels than that of image data is output based on the intermediate density data. On the other hand, an image reproducing method executed by the above-described image reproducing apparatus or the like, is disclosed.
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Fuji 'Xerox Co., Ltd.
Grant II Jerome
Westerman Hattori Daniels & Adrian LLP
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