US 2006/0232681 A1 · Image recording/reproducing apparatus, image pick-up apparatus, and color aberration correcting method

Abstract

An image recording and reproducing apparatus, an image pickup apparatus, and a chromatic aberration correcting method capable of performing excellent correction processing of an aperture amount of an iris and a lens image height of an object in an image pickup lens are provided. An output signal from a camera signal processing circuit 4 is selected by a switch 5 to be supplied to a chromatic aberration correction unit 6. An aperture amount of an iris 31 provided in an image pickup lens 1 and coordinates of a pixel, to which correction processing is performed, from the chromatic aberration correction unit 6 are supplied to a conversion ratio calculation unit 10. A driving state such as a zoom focal length and focal position of the image pickup lens 1 and a camera shake correction vector are supplied to the conversion ratio calculation unit 10. Then, a conversion ratio for each color is obtained to be supplied to the chromatic aberration correction unit 6. Further, a signal corrected in the chromatic aberration correction unit 6 is compressed in a data compression circuit 15 to be supplied to a recording medium in a recording and reproducing apparatus 17. A signal reproduced from the recording and reproducing apparatus 17 is decompressed in a data decompression circuit 18 to be supplied to the switch 5. Accordingly, picture-quality degradation occurring in a miniaturized image pickup lens can be corrected by processing a picked-up image signal, and excellent correction processing can be performed on an aperture amount of an iris and a lens image height of an object in the image pickup lens.

Claims24

Dependent claims

An image recording and reproducing apparatus comprising:

an image pickup lens;
image pickup means for converting image light that passes through said image pickup lens into an electrical image signal;
camera signal processing means for processing said image signal;
color signal conversion means for converting or inversely converting an output signal from said camera signal processing means into at least three primary color signals;
resolution conversion means for performing magnification or reduction of an image on each color of said primary color signal;
detection means for detecting a driving state of an iris and a lens image height of an object in said image pickup lens;
and
control means for controlling a conversion coefficient and optical axis-centered coordinates for the magnification or reduction in said resolution conversion means in accordance with a detection output from said detection means.

5 more elements

An image pickup apparatus comprising:

an image pickup lens;
image pickup means for converting image light that passes through said image pickup lens into an electrical image signal;
camera signal processing means for processing said image signal;
color signal conversion means for converting or inversely converting an output signal from said camera signal processing means into at least three primary color signals;
resolution conversion means for performing magnification or reduction of an image with respect to each color of said primary color signals;
detection means for detecting a driving state of an iris and a lens image height of an object in said image pickup lens;
and
control means for controlling a conversion coefficient and optical axis-centered coordinates for the magnification or reduction in said resolution conversion means in accordance with a detection output from said detection means.

5 more elements

A chromatic aberration correcting method employed in an image recording and reproducing apparatus or image pickup apparatus including an image pickup lens, image pickup means for converting image light that passes through said image pickup lens into an electrical image signal, and camera signal processing means for processing said image signal, comprising the steps of:

converting an output signal from said camera signal processing means into at least three primary color signals;
performing magnification or reduction of an image with respect to each color of said primary color signal;
and
detecting a driving state of an iris and a lens image height of an object in said image pickup lens and controlling said conversion coefficient and optical axis-centered coordinates for magnification or reduction in accordance with the detection output thereof.

1 more element

Dependencies are inferred from the claim text.

Image recording/reproducing apparatus, image pick-up apparatus, and color aberration correcting method

Life of this patent

Image recording/reproducing apparatus, image pick-up apparatus, and color aberration correcting method

Life of this patent

Abstract

Claims24