JP2007129587A5 - - Google Patents

Claims (10)

An image sensor that converts an object image formed by an optical lens that forms an image on an imaging surface into an electrical signal; and
Calculation means for calculating distortion correction data for correcting distortion of the optical lens;
Distortion correction means for correcting distortion aberration of the optical lens with respect to an image based on a subject image converted into an electric signal by the imaging element, based on distortion aberration correction data calculated by the calculation means;
A motion vector detection means for detecting a motion vector using an image in which the distortion is corrected by the distortion correction means;
An image pickup apparatus comprising: a motion correction unit that corrects a motion based on the detection of the motion vector.   The calculation means, from the table for correcting the influence of distortion of the optical lens, the distortion correction coordinates corresponding to the focal length of the optical lens and the coordinates of the image affected by the distortion of the optical lens The image pickup apparatus according to claim 1, wherein the distortion aberration correction data is calculated using the acquired distortion aberration correction coordinates.   The calculation means acquires a distortion coefficient corresponding to the focal length of the optical lens from a table for correcting the influence of the distortion aberration of the optical lens, and calculates distortion aberration correction data using the acquired distortion coefficient. The imaging apparatus according to claim 1, wherein:   The imaging apparatus according to claim 3, wherein the distortion coefficient is a coefficient depending on a distortion rate of the optical lens and a distance from a center of the image.   The imaging apparatus according to claim 2, further comprising the table. Further comprising communication means for communicating with the interchangeable lens device having the table;
5. The imaging apparatus according to claim 2, wherein the calculation unit acquires distortion correction data included in the interchangeable lens apparatus using the table. 6.   The imaging apparatus according to claim 1, wherein the distortion correction unit corrects distortion aberration of the optical lens only in a region necessary for detecting a motion vector. An imaging method using an imaging device including an imaging element that converts an object image formed by an optical lens that forms an image on an imaging surface into an electrical signal,
A calculation step of calculating distortion correction data for correcting distortion of the optical lens;
A distortion correction step of correcting distortion aberration of the optical lens with respect to an image based on a subject image converted into an electric signal by the imaging element based on the distortion aberration correction data calculated in the calculation step;
A motion vector detection step of detecting a motion vector using the image in which the distortion is corrected by the distortion correction step;
An imaging method comprising a motion correction step of correcting a motion based on the detection of the motion vector.   A computer program for causing a computer to execute each step of the imaging method according to claim 8.   A computer-readable storage medium storing the computer program according to claim 9.