Imaging apparatus, imaging method, and computer-readable recording medium
An imaging apparatus includes: a face detector that detects a face of a subject from images captured by an imaging unit; a display controller that causes a display unit to display a guide image for prompting the subject to change a direction of the face; an angle calculation unit that calculates an angle of turn of the face of the subject from a reference position of the direction of the face when the guide image is displayed, based on pieces of image data before and after a change in the direction of the face; a distance calculation unit that calculates a distance between the imaging apparatus and the face based on the calculated angle; and an image processing unit that performs image processing on at least one of the pieces of image data, according to the change in the direction of the face, based on the angle and the distance.
1. An imaging apparatus comprising:
an imaging unit configured to capture images of a subject to generate image data of the subject;
a display unit configured to display the images corresponding to the image data generated by the imaging unit;
a face detector configured to detect a face of the subject from the images corresponding to the image data generated by the imaging unit;
a display controller configured to cause the display unit to display a guide image for prompting the subject to change a direction of the face detected by the face detector;
an angle calculation unit configured to calculate an angle of turn of the face of the subject from a reference position of the direction of the face of the subject when the display unit displays the guide image, based on the images corresponding to pieces of image data before and after a change in the direction of the face of the subject, the pieces of image data having been generated by the imaging unit;
a distance calculation unit configured to calculate a distance between the imaging apparatus and the face of the subject based on the angle calculated by the angle calculation unit; and
an image processing unit configured to perform image processing on at least one of the pieces of image data before and after the change in the direction of the face of the subject, the pieces of image data having been generated by the imaging unit, according to the change in the direction of the face of the subject detected by the face detector, based on the angle calculated by the angle calculation unit and the distance calculated by the distance calculation unit.
2. The imaging apparatus according to claim 1 , further comprising a lost area detector configured to detect an area where a background is lost in the images, based on the images corresponding to the pieces of image data before and after the change in the direction of the face of the subject, the image data having been generated by the imaging unit, wherein
the image processing unit is configured to perform the image processing on at least an area of the face of the subject in the images, based on the area detected by the lost area detector.
3. The imaging apparatus according to claim 2 , wherein the image processing unit is configured to perform the image processing from an edge of the area of the face of the subject in the images.
4. The imaging apparatus according to claim 1 , wherein the image processing is a process to change variables of a color space.
5. The imaging apparatus according to claim 1 , wherein the image processing is a process to generate three-dimensional image data using two pieces of image data.
6. The imaging apparatus according to claim 1 , wherein the image processing is a process to change one or more of an exposure value, saturation, and contrast.
7. The imaging apparatus according to claim 1 , wherein
the display unit is configured to transit between a state where a display area for displaying the images corresponding to the image data faces a rear side of the imaging apparatus, and a state where the display area faces a front side of the imaging apparatus, and
the display controller is configured to cause the display unit to display the guide image when the display area faces the front side.
8. An imaging method to be executed by an imaging apparatus that is configured to capture images of a subject to generate image data of the subject and to display the images corresponding to the image data, the imaging method comprising:
an imaging step of capturing the images of the subject to generate the image data of the subject;
a face detecting step of detecting a face of the subject from the images corresponding to the image data generated in the imaging step;
a display step of displaying a guide image to prompt the subject to change a direction of the face detected in the face detecting step;
an angle calculation step of calculating an angle of turn of the face of the subject from a reference position of the direction of the face of the subject when displaying the guide image in the display step, based on the images corresponding to pieces of image data before and after a change in the direction of the face of the subject, the pieces of image data having been generated in the imaging step;
a distance calculation step of calculating a distance between the imaging apparatus and the face of the subject based on the angle calculated in the angle calculation step; and
an image processing step of performing image processing on at least one of the pieces of image data before and after the change in the direction of the face of the subject, the pieces of image data having been generated in the imaging step, according to the change in the direction of the face of the subject detected in the face detecting step, based on the angle calculated in the angle calculation step and the distance calculated in the distance calculation step.
9. A non-transitory computer-readable recording medium with an executable program stored thereon, the program instructing an imaging apparatus, which is configured to capture images of a subject to generate image data of the subject and to display the images corresponding to the image data, to perform:
an imaging step of capturing the images of the subject to generate the image data of the subject;
a face detecting step of detecting a face of the subject from the images corresponding to the image data generated in the imaging step;
a display step of displaying a guide image to prompt the subject to change a direction of the face detected in the face detecting step;
an angle calculation step of calculating an angle of turn of the face of the subject from a reference position of the direction of the face of the subject when displaying the guide image in the display step, based on the images corresponding to pieces of image data before and after a change in the direction of the face of the subject, the pieces of image data having been generated in the imaging step;
a distance calculation step of calculating a distance between the imaging apparatus and the face of the subject based on the angle calculated in the angle calculation step; and
an image processing step of performing image processing on at least one of the pieces of image data before and after the change in the direction of the face of the subject, the pieces of image data having been generated in the imaging step, according to the change in the direction of the face of the subject detected in the face detecting step, based on the angle calculated in the angle calculation step and the distance calculated in the distance calculation step.