Zoom-tracking method performed by imaging apparatus
AssigneeSamsung Techwin Co., Ltd.
InventorsDaebong KIM, Youngsang KWON, Jungkyung LEE
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Abstract
Provided is an improved zoom-tracking method. A point or two points between a Wide point and a Tele point are chosen, histogram information is stored, and a distance to a subject is estimated based on the stored histogram information. A locus curve is selected based on the estimated distance to the subject, and zoom-tracking is performed along the locus curve after a zoom lens reaches a specific point.
Claims18
A zoom-tracking method performed by an imaging apparatus, the method comprising:
- choosing a first point and a second point between a Wide point and a Tele point, wherein the first point is closer to the Wide point than the second point;
- storing distance information about a subject as histogram information by performing auto-focusing (AF) while a zoom lens moves from the first point to the second point;
- estimating a distance to the subject based on the histogram information while the zoom lens moves from the second point toward the Tele point;
- selecting a locus curve based on the estimated distance to the subject;
- and
- performing zoom-tracking along the selected locus curve after the zoom lens reaches the second point.
A zoom-tracking method performed by an imaging apparatus, the method comprising:
- choosing a Mid point between a Wide point and a Tele point;
- storing distance information about a subject as histogram information by performing auto-focusing (AF) while a zoom lens moves from the Wide point to the Mid point;
- estimating a distance to the subject based on the histogram while the zoom lens moves from the Mid point toward the Tele point;
- selecting a locus curve based on the estimated distance to the subject;
- and
- performing zoom-tracking along the selected locus curve after the zoom lens reaches the Mid point.
An imaging apparatus for performing a zoom-tracking method, the imaging apparatus comprising:
- a histogram storage configured to store distance information about a subject as histogram information by performing auto-focusing (AF) while a zoom lens moves between from a Wide point to an arbitrary point;
- and
- a locus selector configured to estimate a distance to the subject based on the stored histogram information, select a locus curve based on the estimated distance to the subject, and perform zoom-tracking along the selected locus curve while the zoom lens moves from the arbitrary point to a Tele point.
An imaging apparatus for performing an improved zoom-tracking method, the imaging apparatus comprising:
- a point chooser configured to choose a first point and a second point between a Wide point and a Tele point;
- a histogram storage configured to accumulatively store distance information about a subject as histogram information by performing auto-focusing (AF) while a zoom lens moves from the first point to the second point;
- a subject distance estimator configured to estimate a distance to the subject based on the stored histogram information;
- and
- a locus selector configured to select a locus curve based on the estimated distance to the subject, and perform zoom-tracking along the selected locus curve after the zoom lens reaches the second point.
Dependencies are inferred from the claim text.