Image reading device

Details Image reading device Image reading device

2003-09-26

2008-08-19

Bella, Matthew C. (Department: 2624)

Image analysis

Image transformation or preprocessing

Measuring image properties

C382S296000, C345S659000

Reexamination Certificate

active

07415168

ABSTRACT:
An image reading apparatus has a data calculation unit (31,32) to calculate moving average data and second derivative data for a plurality of samples made of multivalued data, a position detection unit (41, 42) to detect first and second positions at which the moving average data and second derivative data have a predetermined relationship, a parallel region determination unit (5) to determine a parallel region based on the first and second positions, an inclination detection unit (61to64) to determine inclinations based on the parallel region, and an inclination detection unit (7) to correct image data based on the inclinations.

REFERENCES:
patent: 3920889 (1975-11-01), Connor
patent: 5940128 (1999-08-01), Morimura
patent: 6384414 (2002-05-01), Fisher et al.
patent: 5-344318 (1993-12-01), None
patent: 11-252351 (1999-09-01), None
patent: 2000-261653 (2000-09-01), None
patent: 2000-341501 (2000-12-01), None
patent: 2002-142084 (2002-05-01), None

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