US 7,397,499 B2Granted

Image pickup device and chromatic aberration correction method

AssigneeSony Corporation

InventorsMiyuki Okada, Ken Nakajima

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Abstract

An image pick-up device and a chromatic aberration correcting method are provided in which a satisfactory correction processing can be performed even when the image pickup device, such as a camera, simultaneously performs shake correction. An output signal from a camera-signal processing circuit is selected by a selector switch and is supplied to a chromatic aberration correcting unit. An angular velocity due to the camera shake is detected using sensors and the detected signal is supplied to a camera shake correcting vector calculating unit. A driving state of a camera lens is supplied to a conversion-ratio calculating unit. An optical axis centered shift vector of camera lens is obtained from the camera shake correcting vector and is supplied to the correcting unit. Accordingly the picture-quality deterioration caused in the miniaturized camera lens can be compensated by processing the captured image signal, and also a satisfactory correction processing can be performed even when the camera shake correction is performed simultaneously.

Claims8

Dependent claims

An image pick-up apparatus comprising:

a camera lens;
image pickup means for converting image light passing through said camera lens into an electric image signal;
camera-signal processing means for processing said image signal;
chromatic signal converting means for converting an output signal from said camera-signal processing means into at least three primary color signals;
resolution changing means for enlarging or reducing a picture of each color of said primary color signals;
detection means for detecting a driving state of said camera lens and an amount of camera shake correction;
control means for controlling a changing coefficient of enlargement or reduction and an optical axis centered coordinate used in said resolution changing means depending on a detected output from said detection means;
signal conversion means for converting an output signal from said resolution changing means into an image signal for recording;
and
recording and reproducing means for recording and reproducing said image signal to be recorded in a recording medium together with information on the driving state of said camera lens and an amount of camera shake correction that are detected by said detection means when taking a picture,
wherein the control means defines a changing coefficient of enlargement or reduction based on a driving state of the camera lens and a position of an optical axis based on an optical axis centered shift vector of the camera lens obtained from camera shake correcting vector and the control means controls said changing coefficient of enlargement or reduction and the optical axis centered coordinate around the position of the optical axis according to the changing coefficient, and
wherein the image pick-up apparatus has a first mode of correcting chromatic aberration when taking a picture and a second mode of correcting chromatic aberration based on reproduced information on the driving state of the camera lens and reproduced amount of camera shake correction.

9 more elements

A chromatic aberration correcting method in a picture taking apparatus comprising:

converting image light passing through a camera lens into an electric image signal;
processing said image signal;
converting an output signal of the image signal into at least three primary color signals;
enlarging or reducing a picture of each color of said primary color signals
detecting a driving state of said camera lens and an amount of camera shake correction to control a conversion coefficient of said enlargement or reduction and an optical axis centered coordinate depending on the detected output;
converting the output signal into an image signal for recording;
recording and reproducing said image signal to be recorded in a recording medium together with information on the driving state of said camera lens and an amount of camera shake correction that are detected when taking a picture;
defining a changing coefficient of enlargement or reduction based on a driving state of the camera lens and a position of an optical axis based on a optical axis centered shift vector of the camera lens obtained from camera shake correcting vector and controlling said changing coefficient of enlargement or reduction and the optical axis centered coordinate around the position of the optical axis according to the changing coefficient;
and
wherein the picture taking apparatus has a first mode of correcting chromatic aberration when taking a picture and a second mode of correcting chromatic aberration based on reproduced information on the driving state of the camera lens and reproduced amount of camera shake correction.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/506,848Filed 5 Mar 2003
Priority: JP 2002-0591915 Mar 2002
Published: US 2005/0168614 A14 Aug 2005
Granted: 8 Jul 2008
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H04N 5/772
Between a recording apparatus and a television camera: the recording apparatus and the television camera being placed in the same enclosure
H04N 23/60
Cameras or camera modules comprising electronic image sensors; Control thereof: control of cameras or camera modules
H04N 23/68
Control of cameras or camera modules: for stable pick-up of the scene, e.g. compensating for camera body vibrations
H04N 23/6811
Motion detection: based on the image signal