IMAGE SIGNAL PROCESSOR AND IMAGE INPUT PROCESSOR

Japanese Patent JP3935548

B2

PROBLEM TO BE SOLVED: To decode a missing color signal by extracting a color signal in a local area with a prescribed size that includes designated pixels and modifying and synthesizing the color signal with less color aberration based on a prescribed structural model and a prescribed evaluation function so as to generate a reference image based on the produced approximated reference image and the approximated reference image after smoothing.
SOLUTION: An area extract section 305 conducts image scanning under the control of a control section 320 to extract color signals in each color in existence in an area of a prescribed size around a specific pixel and transfers the extracted color signals to signal block buffers 306, 307, 308 respectively. Each of mean value.variance calculation sections 309, 310, 311 reads each color signal and calculates a mean value and a variance of each color signal. A signal modification section 313 modifies the variance and the mean value of other color signals than the color signal providing a maximum variance so as to be equal to the variance and the mean value of the color signal providing the maximum variance as to each color signal which is transferred from an RGB switch section 317 and transfers the modified result to an object image generating section 314. A missing pixel decoding section 318 decodes a missing color signal and provides an output of the result.

Tsuruoka Takeo
Tsukioka Kento

JP5856897A

June 27, 2007

February 27, 1997

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Olympus Endo Technology America Inc.

H04N9/07; G06T5/00; G06T5/20; H04N9/04; (IPC1-7): H04N9/07

JP10200902A
JP10013845A
JP9284798A

Takehiko Suzue
Sadao Muramatsu
Tetsuya Kazama
Koji Mizuno

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