Image taking apparatus and program for multiple-exposure shooting
First Claim
1. An image taking apparatus performing a multiple-exposure shooting by using object images, the image taking apparatus comprising:
- a lens;
a diaphragm;
an image sensor configured to obtain object images through the lens and the diaphragm;
an exposure time calculator configured to calculate exposure time of the image sensor based on an aperture value corresponding to the diaphragm and on brightness of the object;
a predetermined time calculator configured to calculate predetermined time based on a focal length of the lens and a predetermined coefficient;
a shooting mode determining unit configured to determine execution of the multiple-exposure shooting to obtain a composite image of the object if the exposure time is equal to or longer than the predetermined time, said composite image obtained to combine the plurality of object images;
a motion detector configured to detect motion among the plurality of object images in the multiple-exposure shooting; and
a predetermined coefficient calculator configured to update the predetermined coefficient based on the detected amount of motion.
1 Assignment
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Accused Products
Abstract
The exposure time calculator calculates exposure time of image sensor based on an aperture value corresponding to a diaphragm and brightness of an object. The predetermined time calculator calculates predetermined time based on a focal length of a lens and a predetermined coefficient. The shooting mode determining unit determines execution of multiple-exposure shooting to obtain a composite image of the object by obtaining multiple object images and then combining the multiple object images in a case where the exposure time is equal to or longer than the predetermined time. The motion detector detects motion among the multiple object images in the multiple-exposure shooting. The predetermined coefficient calculator updates a predetermined coefficient based on the detected amount of motion.
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Citations
14 Claims
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1. An image taking apparatus performing a multiple-exposure shooting by using object images, the image taking apparatus comprising:
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a lens;
a diaphragm;
an image sensor configured to obtain object images through the lens and the diaphragm;
an exposure time calculator configured to calculate exposure time of the image sensor based on an aperture value corresponding to the diaphragm and on brightness of the object;
a predetermined time calculator configured to calculate predetermined time based on a focal length of the lens and a predetermined coefficient;
a shooting mode determining unit configured to determine execution of the multiple-exposure shooting to obtain a composite image of the object if the exposure time is equal to or longer than the predetermined time, said composite image obtained to combine the plurality of object images;
a motion detector configured to detect motion among the plurality of object images in the multiple-exposure shooting; and
a predetermined coefficient calculator configured to update the predetermined coefficient based on the detected amount of motion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A program for obtaining an object image by use of image sensor exposed through a lens and a diaphragm and to perform a multiple-exposure shooting by use of the object image, the program causing a computer to execute procedures for:
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calculating exposure time of the image sensor based on an aperture value corresponding to the diaphragm and on brightness of the object;
calculating predetermined time based on a focal length of the lens and a predetermined coefficient;
determining execution of the multiple-exposure shooting to obtain a composite image of the object if the exposure time is equal to or longer than the predetermined time, said composite image obtained to combine the plurality of object images;
detecting motion among the plurality of object images in the multiple-exposure shooting; and
updating the predetermined coefficient based on a detected amount of motion. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification