Imaging device and imaging method
View Patent ↗An imaging device of the present invention, for taking and storing movies and still pictures, comprises an image sensor, an imaging processing section, and a control section for controlling exposure of the image sensor and controlling taking of an optical image, wherein the control section, when taking still pictures while shooting a movie, carries out exposure by dividing a time corresponding to a single frame of the movie into a plurality of times, applies processing by the imaging processing section to acquire a plurality of image data, performs positional alignment of the subject image of the plurality of image data and combines a plurality of image data, and stores as still picture data, and combines a plurality of image data without carrying out positional alignment of the subject image of the priority of image data and stores as a single frame of the movie data.
1. An imaging device for taking and storing movies and still pictures, comprising:
an image sensor for photoelectrically converting an incident optical image;
an image processing section for processing output signals of the image sensor to acquire image data;
a control section for controlling exposure of the image sensor and controlling taking of the optical image, wherein the control section, when taking still pictures while shooting a movie, carries out exposure by dividing a time corresponding to a single frame of a movie image into a plurality of times, applies processing by the image processing section to acquire a plurality of image data, performs positional alignment of subject images of the plurality of image data and combines a plurality of image data, and stores as still picture data, and combines a plurality of image data without carrying out positional alignment of subject images of the plurality of image data and stores as a single frame of movie image data; and
a shake amount detection section for detecting amount of shake, and wherein the control section, when combining movie image data using a plurality of image data, in the case where amount of shake is larger than a first specified amount, combines a plurality of image data that were obtained consecutively from among the plurality of image data without carrying out positional alignment of a subject image to generate a plurality of composite image data, carries out positional alignment for a subject image of the plurality of composite image data, and stores as a single frame of move image data.
2. The imaging device of claim 1 , wherein
the control section sets a number of the divisions based on an amount of shake detected by the shake amount detection section.
3. The imaging device of claim 1 , wherein:
the control section, when combining movie image data using a plurality of image data, in the case were amount of shake is larger than a second specified amount that is larger than the first specified amount, combines all of a plurality of image data by carrying out positional alignment of a subject image, and stores as a single frame of movie image data.
4. The imaging device of claim 1 , wherein:
the shake amount detection section detects amount of shake based on amount of movement of the subject image between the image data.
5. The imaging device of claim 1 , wherein:
the control section carries out positional alignment for a subject image of a plurality of composite images based on amount of a subject image movement between a plurality of image data.
6. The imaging device of claim 5 , wherein:
the control section aligns a position of a subject image of image data that was initially acquired, among the plurality of image data, with a position of a subject image of another image data, among the plurality of image data.
7. An imaging device for shooting and storing movies and still pictures, comprising:
an image sensor for photoelectrically converting an incident optical image;
an image processing section for processing output signals of the image sensor to acquire image data; and
a control section for controlling exposure of the image sensor and controlling taking of the optical image, wherein
the control section, when taking still pictures while shooting a movie, carries out exposure by dividing a time corresponding to a single frame of a movie, with respect to a plurality of frames of a movie, into a longer time and a shorter time, applies processing by the image processing section to acquire a plurality of image data, performs positional alignment of a subject image to combine image data corresponding to the shorter time exposure, with respect to the plurality of frames, and stores as still picture data, and stores image data corresponding to the longer time exposure, with respect to the plurality of frames, as respective single frames of the plurality of frames of the movie image, wherein
the control section, with respect to the plurality of frames, multiplies image data corresponding to the longer exposure time by a gain for compensating for a shortfall in exposure time when exposure has been carried out by dividing the time corresponding to a single frame of a movie into a longer time and a shorter time, and stores as respective single frames of a plurality of frames of the movie image.
8. The imaging device of claim 7 , wherein:
the control section, with respect to the plurality of frames, after carrying out exposure corresponding to a shorter divided time within a single frame, carries out exposure corresponding to a longer divided time.
9. The imaging device of claim 7 , further comprising:
a shake amount detection section for detecting amount of shake, and wherein
the control section sets a ratio for division of the long time and the short time based on an amount of shake detected by the shake amount detection section.
10. The imaging device of claim 9 , wherein:
the shake amount detection section amount of shake based on amount of movement of the subject image between the image data.
11. An imaging method, for processing output signals of an image sensor for photoelectrically converting an incident optical image to acquire image data, and shooting and storing movies and still pictures, comprising:
when shooting still pictures during movie shooting, carrying out exposure by dividing a time corresponding to a single frame of a movie into a plurality of time periods and acquiring a plurality of image data by carrying out image processing;
carrying out positional alignment of a subject image of the plurality of image data to combine a plurality of image data, and storing as still picture data, and combining a plurality of image data without carrying out positional alignment of the subject image of the plurality of image data and storing as a single frame of movie data;
detecting shake amount; and
when combining movie image data using the plurality of image data, in a case where the shake amount is larger than a first specified amount, combining a plurality of image data that were obtained consecutively from among the plurality of image data without carrying out positional alignment of a subject image to generate a plurality of composite image data, carrying out positional alignment for a subject image of the plurality of composite image data, and storing as a single frame of movie image data.
12. The imaging method of claim 11 , further comprising:
setting a number of the divisions based on detected amount of shake.
13. The imaging method of claim 11 , wherein:
when combining movie data using a plurality of image data, in a case where the shake amount is larger than a second specified amount that is larger than the first specified amount, combining all of a plurality of image data by carrying out positional alignment of a subject image, and storing as a single frame of movie data.
14. The imaging method of claim 11 , wherein:
the shake amount is detected based on amount of movement of a subject image between the image data.
15. The imaging method of claim 11 , wherein:
positional alignment for a subject image of a plurality of image data is carried out based on amount of movement of the subject between a plurality of image data.