Imaging Device and Camera Body
First Claim
1. An imaging device for acquiring image data for a subject, comprising:
- an interchangeable lens unit having an optical system provided to form an optical image of the subject, and a first holding part configured to hold first correction information used to electrically correct distortion produced by the optical system; and
a camera body having an image acquisition part configured to convert the optical image into image data, a correction information acquisition part configured to acquire the first correction information held in the first holding part, an operation part configured to produce second correction information by performing an interpolation operation or an extrapolation operation on the first correction information, and a distortion corrector configured to correct distortion in the image data on the basis of the second correction information.
1 Assignment
0 Petitions
Accused Products
Abstract
A digital camera comprises an interchangeable lens unit and a camera body. The interchangeable lens unit is provided to form an optical image of a subject. A flash memory is configured to hold a correction coefficient table used to electrically correct distortion produced by the optical system. The camera body has a CCD image sensor, a correction coefficient acquisition part, an operation part, and a correction processor. The correction coefficient acquisition part is configured to acquire the correction coefficient table held in the flash memory. The operation part is configured to produce correction data by performing an interpolation operation or an extrapolation operation on the information obtained from the correction coefficient table. The correction processor is configured to correct distortion in the image data on the basis of information produced by the operation part.
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Citations
21 Claims
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1. An imaging device for acquiring image data for a subject, comprising:
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an interchangeable lens unit having an optical system provided to form an optical image of the subject, and a first holding part configured to hold first correction information used to electrically correct distortion produced by the optical system; and a camera body having an image acquisition part configured to convert the optical image into image data, a correction information acquisition part configured to acquire the first correction information held in the first holding part, an operation part configured to produce second correction information by performing an interpolation operation or an extrapolation operation on the first correction information, and a distortion corrector configured to correct distortion in the image data on the basis of the second correction information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A camera body used in an imaging device for acquiring image data of a subject along with an interchangeable lens unit, comprising:
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an image acquisition part configured to convert an optical image of the subject into image data; a correction information acquisition part configured to acquire from the interchangeable lens unit first correction information used to electrically correct distortion produced by the interchangeable lens unit; an operation part configured to produce second correction information by performing an interpolation operation or an extrapolation operation on the first correction information; and a distortion corrector configured to correct distortion in the image data on the basis of the second correction information.
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21. A camera body used in an imaging device for acquiring image data of a subject along with an interchangeable lens unit, comprising:
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an interface for receiving and transmitting data to and from the interchangeable lens unit; a controller coupled to the interface; and a memory coupled to the controller, the memory including instructions for configuring the controller to; convert an optical image received among the data from the interface into image data; acquire first correction information stored in a portion of the memory; produce second correction information by performing an interpolation operation or an extrapolation operation on the first correction information; and correct distortion in the image data on based on the second correction information.
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Specification