CORRECTION METHOD OF LENS DISTORTION OF IMAGE

Japanese Patent JP3429280

B2

PROBLEM TO BE SOLVED: To provide a correction method of the lens distortion of an image for accurately correcting the lens distortion of the image by automatically and accurately obtaining internal parameters using all points on an image (3) without necessitating giving corresponding points (1) and without using special tools and objects (2).
SOLUTION: The correction method of the lens distortion of an image comprises an image-printing step (A) for printing an arbitrary image I1 in a computer, an image pickup step (B) for obtaining a shot image I2 in the computer by picking up the printed image I1 using a camera having lens distortion, a parameter estimation step (C) for obtaining a parameter θ where a distorted image I1ud obtained by artificially distorting the image I1 using the parameter θmatches with the shot image I2, and an image correction step (D) for correcting the shot image of the camera using the obtained parameter θ.

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Toru Tamaki
Takeshi Yamamura
Noboru Ohnishi

JP2001054686A

July 22, 2003

February 28, 2001

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RIKEN

G06T3/00; G06T5/00; H04N5/232; H04N5/228; (IPC1-7): G06T3/00; H04N5/232

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玉木徹 山村毅 大西昇，画像レジストレーションに基づいた画像歪み補正，電子情報通信学会２０００年情報・システムソサイエティ大会講演論文集，日本，社団法人電子情報通信学会，２０００年 ９月 ７日，Ｄ−１２−４８，Ｐ．２３５
玉木徹 山村毅 大西昇，非線形最適化による画像の歪曲収差補正，２０００年映像情報メディア学会冬季大会講演予稿集，日本，社団法人映像情報メディア学会，２０００年１２月 ６日，１−１０，Ｐ．５８

Minoru Hotta

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