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Camera system and method with extended depth of field

A technology of camera system and depth of field, applied in the field of camera system that can extend or increase the depth of field

Active Publication Date: 2017-07-07
OMNIVISION TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And as a result of the extended depth of field, the photographer spends less energy on focusing on the object

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  • Camera system and method with extended depth of field
  • Camera system and method with extended depth of field
  • Camera system and method with extended depth of field

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Embodiment Construction

[0014] The camera system and the method for extending the depth of field according to preferred embodiments of the present invention will be described below with reference to related drawings, wherein the same elements will be described with the same reference numerals.

[0015] Many methods for extending the depth of field have been proposed. For example, digital restoration methods can be applied to capture image data and extend the depth of field of the system. Such digital restoration methods include restoration of blurred images caused by chromatic aberration, as described in patent application No. 488 (US Patent Application No. 13 / 179,488, filed July 9, 2011, titled It is disclosed by "Cross-Color Image Processing Systems and Methods for Sharpness Enhancement", which has a common inventor and applicant with this application.

[0016] A lens with chromatic aberration is also called a chromatic lens, which has different focal lengths for different colors. That is, the fo...

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Abstract

The invention relates to a camera system and method with a selected depth of field, which includes a camera lens and a color image sensor. Wherein, the imaging lens forms an image of an object, and the imaging lens has chromatic aberration; the color image sensor receives the image of the object and has a selected spectral response, and the selected spectral response defines a selection of the first central wavelength, a selection of the second central wavelength, and a selection third central wavelength. The selection of the first central wavelength is greater than the selection of the second central wavelength, and the selection of the second central wavelength is greater than the selection of the third central wavelength. Select the spectral response to define the depth of field of the camera system. The difference between the selected first central wavelength and the selected third central wavelength is greater than 150 nm.

Description

technical field [0001] The invention relates to a camera system and method, in particular to a camera system and method capable of extending or increasing the depth of field. Background technique [0002] The depth of field (DOF) of the camera system is the range of a distance of the camera system, within which an object can be positioned so that the image of the object can be sharply focused, and the depth of focus (depth of focus) refers to The distance from a detector to the imaging optics so that objects located at a given distance can be sharply focused. Therefore, a depth of focus can be converted into a corresponding depth of field. Generally speaking, an optical camera system has a limited depth of field. When a camera system captures optical data, such as taking a photo, only objects within the depth of field will appear sharply in the photo. The adjustment made by the system to produce a sharp image of an object at a certain distance from the camera lens is call...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/04G03B11/04
CPCY10T29/49826H04N25/611H04N25/134
Inventor 高路单继章刘冠松李红军
Owner OMNIVISION TECH INC
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