Autofocus imaging device
AssigneeSK hynix Inc.
InventorsTatsuro KOIZUMI, Sung Kyu LEE
Life of this patent
Estimating the term…
Abstract
An imaging device includes an evaluation value calculator configured to calculate an evaluation value set including evaluation values corresponding to candidate parallaxes based on a phase image set, and a parallax calculator configured to calculate a target parallax based on the evaluation value set, the target parallax representing a phase shift value that allows to minimize a difference between phase images corresponding to phase signals with respect to an object to be imaged. Each of the evaluation values indicates a degree of certainty that the candidate parallax corresponding to each evaluation value is the target parallax.
Claims20
An imaging device comprising:
- an evaluation value calculator configured to calculate an evaluation value set including evaluation values corresponding to candidate parallaxes based on a phase image set;
- and
- a parallax calculator configured to calculate a target parallax based on the evaluation value set, the target parallax representing a phase shift value that allows to minimize a difference between phase images corresponding to phase signals with respect to an object to be imaged;
- wherein
- each of the evaluation values indicates a degree of certainty that the candidate parallax corresponding to each evaluation value is the target parallax.
An imaging device comprising:
- an imaging circuit including a lens and configured to collect a plurality of phase signal pairs for an object;
- an image generator configured to generate a plurality of phase image sets based on the plurality of phase signal pairs;
- an evaluation value calculator configured to calculate a plurality of evaluation value sets including evaluation values corresponding to candidate parallaxes, based on the plurality of phase image sets;
- and
- a parallax calculator configured to calculate a target parallax based on the plurality of evaluation value sets, the target parallax representing a phase shift value that allows to minimize a difference between phase images corresponding to the plurality of phase signal pairs;
- wherein
- the target parallax is a parallax that controls an in-focus position of the lens with respect to the object.
Dependencies are inferred from the claim text.