Image analysis – Image enhancement or restoration – Artifact removal or suppression
Reexamination Certificate
2007-10-29
2008-08-26
Wu, Jingge (Department: 2624)
Image analysis
Image enhancement or restoration
Artifact removal or suppression
C382S243000, C382S232000, C345S555000, C708S203000
Reexamination Certificate
active
07418155
ABSTRACT:
A lattice dividing unit determines lattice lines to divide parameters of all points of a picture at every division and supplies distortion correction parameters (distortion correction coordinates) on the lattice points to a distortion correction memory (not shown). A polynomial of degree n coefficient deriving unit expresses all distortion correction coordinates on each lattice line in the form of a function relative to positions on lattice lines and approximates the distortion correction coordinates by desired division polynomial of degree n. Further, a sample point deriving unit compresses distortion correction parameters based upon the division polynomial of degree n obtained from the polynomial of degree n coefficient deriving unit. In the derived division polynomial of degree n, internal points which result from dividing both ends of the division polynomial of degree n by n is supplied to the distortion correction memory as new distortion correction parameters (approximated distortion correction coordinates). Thus, a memory capacity of a required memory can be reduced in the image processing for correcting distortion of an image.
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Aoyama Koji
Kurata Tohru
Nose Atsushi
Wada Kimitaka
Krasnic Bernard
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Corporation
Wu Jingge
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