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Image processing device, imaging device and control method

A technology of image processing equipment and camera equipment, applied in image data processing, image enhancement, image communication, etc.

Active Publication Date: 2017-12-05
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, in the case of generating a reconstructed image with a deep depth of field as described above, there are cases where subjects other than the desired subject are also in focus

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  • Image processing device, imaging device and control method
  • Image processing device, imaging device and control method
  • Image processing device, imaging device and control method

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Embodiment Construction

[0023] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Note that the following embodiments will be described by taking the present invention as an example of an image processing apparatus for a digital camera that can generate images focused at an arbitrary subject distance based on LF data after shooting. image of the subject. However, the present invention is applicable to any device that can generate an image focused on a subject at an arbitrary subject distance based on LF data.

[0024] In addition, the following terms used in this specification are defined as follows.

[0025] · "Light Field (LF) Data"

[0026] LF data refers to an image signal output from the imaging unit 106 of the digital camera 100 of this embodiment. Each pixel of the image signal represents a signal intensity corresponding to a light beam having a different combination of the pupil region and the incident direction o...

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Abstract

The present invention relates to an image processing device, an imaging device and a control method. In the image processing apparatus of the present invention, a plurality of subjects are selected in an image signal, and a subject distance for focusing on each of the selected subjects is specified. Then set the subject distance range defined by the specified subject distance. Then, based on the image signal, the image processing apparatus generates a reconstructed image focused on each subject to be focused in the set subject distance range.

Description

technical field [0001] The present invention relates to an image processing device, an imaging device, and a control method, and more particularly, to a technique for generating an image focused at an arbitrary subject distance based on output data after shooting. Background technique [0002] In recent years, a technique has been proposed in which, in an image pickup apparatus such as a digital camera, the intensity distribution and traveling direction of light are recorded as output data during shooting, so that it is possible to generate a focus position at an arbitrary position based on the output data after recording. image on the image plane. [0003] Ren.Ng et al., "Light Field Photography with a Hand-held PlenopticCamera", Stanford University Computer Science Tech Report CTSR, 2005-02 discloses the following method (light field photography): The light beams of the area are imaged on the pixels (photoelectric conversion elements) of the image sensor via the microlens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/225H04N5/232
CPCH04N23/675H04N23/63G03B13/36G06T5/50H04N23/743H04N23/62G02B7/34
Inventor 山田惠司
Owner CANON KK