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US 8,525,923 B2Granted
Focusing method and apparatus, and recording medium for recording the method
AssigneeSamsung Electronics Co., Ltd.
InventorsMasataka Hamada, Kenji Ishibashi
Life of this patent
Estimating the term…
Abstract
A focusing method and apparatus for providing focus evaluation value information regarding a focus region of an image of a subject, which is obtained by performing auto focusing, without having to enlarge the focus region, and a computer readable recording medium having recorded thereon the focusing method. Accordingly, a user may precisely and finely perform manual focusing on the focus region.
Claims31
A focusing apparatus comprising:
- a focus lens;
- a focus lens driving unit for moving the focus lens in an optical axial direction;
- an imaging device for generating an image signal by transforming light of an image of a subject, which is incident on the focus lens, into an electrical signal;
- a focus evaluation value obtaining unit for obtaining a first focus evaluation value according to a location of the focus lens by automatically moving the focus lens, and obtaining a second focus evaluation value according to a location of the focus lens by manually moving the focus lens, in relation to the image signal;
- a peak value obtaining unit for obtaining a peak value of the first focus evaluation value;
- a focus lens location obtaining unit for detecting a location of the focus lens corresponding to the peak value;
- an information generation unit for generating focus evaluation value information corresponding to the second focus evaluation value;
- and
- a providing unit for providing the focus evaluation value information,
- wherein the second focus evaluation value is obtained from an image signal of a focus region in which the peak value is obtained.
7 more elements
A focusing method comprising:
- generating an image signal by transforming light of an image of a subject, which is incident on a focus lens, into an electrical signal;
- obtaining a first focus evaluation value according to a location of the focus lens by automatically moving the focus lens, in relation to the image signal;
- obtaining a peak value of the first focus evaluation value;
- detecting a location of the focus lens corresponding to the peak value of the first focus evaluation value;
- obtaining a second focus evaluation value according to a location of the focus lens by manually moving the focus lens, based on an image signal of a focus region in which the peak value is obtained;
- and
- generating focus evaluation value information corresponding to the second focus evaluation value;
- and
- providing the focus evaluation value information.
6 more elements
Dependencies are inferred from the claim text.