IMAGING APPARATUS
First Claim
1. An imaging apparatus, comprising:
- an imager which acquires an image signal of a subject by imaging;
a setter which sets a focus area to the image signal;
a first filter processer which performs a filer process on a luminance signal included in the image signal in the focus area;
a second filter processor which performs a filter process on the luminance signal included in the image signal in the focus area and to which a cutoff frequency different from the cutoff frequency of said first filter processor is set;
a first determiner which determines whether or not a point light source is included in the subject;
a calculator which calculates an evaluation value from the luminance signal included in the image signal in the focus area; and
a focuser which performs focus control based on the evaluation value, wherein when it is determined by said first determiner that the point light source is included in the subject, said calculator calculates the evaluation value based on output of said first filter processor and output of said second filter processor.
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Accused Products
Abstract
An imaging apparatus includes an imager which acquires an image signal of a subject. A first filter processer performs a filer process on a luminance signal included in the image signal in a focus area. A second filter processor performs a filter process on the luminance signal included in the image signal in the focus area and to which a cutoff frequency different from the cutoff frequency of the first filter processor is set. A first determiner determines whether or not a point light source is included in the subject. A calculator calculates an evaluation value from the luminance signal included in the image signal in the focus area. A focuser performs focus control based on the evaluation value. When it is determined that the point light source is included in the subject, the calculator calculates the evaluation value based on outputs of the first and second filter processor.
70 Citations
4 Claims
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1. An imaging apparatus, comprising:
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an imager which acquires an image signal of a subject by imaging; a setter which sets a focus area to the image signal; a first filter processer which performs a filer process on a luminance signal included in the image signal in the focus area; a second filter processor which performs a filter process on the luminance signal included in the image signal in the focus area and to which a cutoff frequency different from the cutoff frequency of said first filter processor is set; a first determiner which determines whether or not a point light source is included in the subject; a calculator which calculates an evaluation value from the luminance signal included in the image signal in the focus area; and a focuser which performs focus control based on the evaluation value, wherein when it is determined by said first determiner that the point light source is included in the subject, said calculator calculates the evaluation value based on output of said first filter processor and output of said second filter processor. - View Dependent Claims (2, 3, 4)
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Specification