Image capture device and image processor
View Patent ↗An image capture device according to the present disclosure includes: an image capturing section configured to generate an image by shooting; an acceleration detector configured to detect acceleration and output a first signal; an angular velocity detector configured to detect angular velocity and output a second signal; and a controller configured to determine an angle of rotation of the image based on at least a result of comparison between the first and second signals' DC components and a result of comparison between the first and second signals' AC components.
1. An image capture device comprising:
an image capturing section configured to capture a subject image and to generate an image;
an acceleration detector configured to detect acceleration and output a first signal;
an angular velocity detector configured to detect angular velocity and output a second signal; and
a controller configured to determine an angle of rotation of the generated image based on at least one of a result of comparison between DC components of the first and second signals and a result of comparison between AC components of the first and second signals, wherein
when the controller determines the angle of rotation of the generated image based on the result of comparison between AC components of the first and second signals, the controller determines the angle of rotation of the generated image using the DC component of the first signal and at least part of the AC components of the second signal.
2. The image capture device of claim 1 , wherein when the difference between respective values of the first and second signals' DC components is smaller than a preset threshold value, the controller determines the angle of rotation based on the second signal.
3. The image capture device of claim 2 , wherein when the difference between respective values of the first and second signals' DC components is equal to or greater than the threshold value and unless the first and second signals' AC components correspond to each other, the controller determines the angle of rotation based on the second signal and the first signal's DC component.
4. The image capture device of claim 2 , wherein when the difference between respective values of the first and second signals' DC components is equal to or greater than the threshold value and when the first and second signals' AC components correspond to each other, the controller determines the angle of rotation based on the first signal.
5. The image capture device of claim 4 , wherein when the difference between respective values of the first and second signals' DC components is equal to or greater than the threshold value and when the first and second signals' AC components correspond to each other, the controller determines the angle of rotation based on the first signal's DC and AC components and on a portion of the second signal's AC component that does not overlap with the first signal's AC component.
6. The image capture device of claim 1 , wherein unless the first and second signals' AC components correspond to each other, the controller determines the angle of rotation based on the second signal and the first signal's DC component.
7. The image capture device of claim 6 , wherein when the first and second signals' AC components correspond to each other and when the difference between respective values of the first and second signals' DC components is equal to or greater than a predetermined threshold value, the controller determines the angle of rotation based on the first signal.
8. The image capture device of claim 7 , wherein when the first and second signals' AC components correspond to each other and when the difference between respective values of the first and second signals' DC components is equal to or greater than the predetermined threshold value, the controller determines the angle of rotation based on the first signal's DC and AC components and on a portion of the second signal's AC component that does not overlap with the first signal's AC component.
9. The image capture device of claim 6 , wherein when the first and second signals' AC components correspond to each other and when the difference between respective values of the first and second signals' DC components is smaller than the threshold value, the controller determines the angle of rotation based on the second signal.
10. The image capture device of claim 1 , further comprising an image processing section configured to correct the image by rotating the coordinates of the image by the angle of rotation that has been determined by the controller.
11. An image processor that processes a signal supplied from an image capture device including an image capturing section configured to capture a subject image and to generate an image, an acceleration detector configured to detect acceleration, and an angular velocity detector configured to detect angular velocity, the image processor, comprising:
an interface configured to obtain a signal representing the image, a first signal representing the output of the acceleration detector, and a second signal representing the output of the angular velocity detector; and
a controller configured to determine an angle of rotation of the obtained image based on at least one of a result of comparison between DC components of the first and second signals and a result of comparison between AC components of the first and second signals, wherein
when the controller determines the angle of rotation of the generated image based on the result of comparison between AC components of the first and second signals, the controller determines the angle of rotation of the generated image using the DC component of the first signal and at least part of the AC components of the second signal.
12. An image processing method for processing a signal supplied from an image capture device including an image capturing section configured to capture a subject image to generate an image, an acceleration detector configured to detect acceleration, and an angular velocity detector configured to detect angular velocity, the method comprising:
obtaining a signal representing the image, a first signal representing the output of the acceleration detector, and a second signal representing the output of the angular velocity detector; and
determining an angle of rotation of the image based on at least one of a result of comparison between DC components of the first and second signals and a result of comparison between AC components of the first and second signals, wherein
when the controller determines the angle of rotation of the generated image based on the result of comparison between AC components of the first and second signals, the controller determines the angle of rotation of the generated image using the DC component of the first signal and at least part of the AC components of the second signal.