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US 2006/0221215 A1Published application
Image pickup apparatus and motion vector deciding method
AssigneeFuji Photo Film Co., Ltd.
InventorKenji Ito
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Abstract
According to the apparatus and method of the present invention, the motion vector Vij is weighted by the weighting coefficient αij of the motion vector Vij decided based on the AF evaluation value Iij indicating the degree of sharpness of the subject image so as to decide the entire motion vector V. For this reason, it is possible to reduce an influence on the decision of the motion vector V of the entire image exerted by the motion vector of the object of a low degree of sharpness, that is, the object not focused on.
Claims13
An image pickup apparatus, comprising:
- an imaging portion which photoelectrically converts a subject image and obtains a frame image of a subject;
- a first motion vector deciding portion which decides a motion vector Vij of each of segmented regions Dij (i=1 to M, j=1 to N) made by segmenting the frame image of the subject obtained by the imaging portion into multiple matrix domains of M lines×N rows;
- an AF evaluation value calculating portion which calculates an AF evaluation value indicating a degree of sharpness of the subject image from the frame image of the subject obtained by the imaging portion;
- a coefficient deciding portion which decides a weighting coefficient αij of each motion vector Vij based on the AF evaluation value calculated by the AF evaluation value calculating portion;
- and
- a second motion vector deciding portion which decides an entire motion vector V of the frame image of the subject by weighting the motion vector Vij based on the weighting coefficient αij.
3 more elements
A motion vector deciding method comprising steps of:
- photoelectrically converting a subject image and obtaining a frame image of a subject;
- deciding a motion vector Vij of each of segmented regions Dij (i=1 to M, j=1 to N) made by segmenting the frame image of the subject into multiple matrix domains of M rows×N lines;
- calculating an AF evaluation value indicating a degree of sharpness of the subject image from the frame image of the subject;
- deciding a weighting coefficient αij of each motion vector Vij based on the AF evaluation value calculated by the AF evaluation value calculating portion;
- and
- deciding an entire motion vector V of the frame image of the subject by weighting the motion vector Vij based on the weighting coefficient αij.
3 more elements
Dependencies are inferred from the claim text.