1. A piezoelectric speaker, comprising:
a membrane;
an actuating layer comprising at least one a piezoelectric element mounted to said membrane, which at least one piezoelectric element is adapted to, when actuated, cause said membrane to vibrate in order to generate sound, and
variation means for varying the fraction of the actuating layer that is actuated depending on the sound frequency to be generated.
2. A piezoelectric speaker according to claim 1, wherein a reduced fraction of said actuating layer is actuated for higher sound frequencies.
3. A piezoelectric speaker according to claim 1, wherein said actuating layer comprises a single piezoelectric element.
4. A piezoelectric speaker according to claim 3, wherein said variation means is adapted to selectively actuate a number of different portions of said piezoelectric element by means of an electric input signal representative of the sound to be generated, wherein the number of actuated portions depends on the frequency of said input signal.
5. A piezoelectric speaker according to claim 4, wherein said variation means comprises a segmented electrode provided on one side of the piezoelectric element, said segmented electrode having individually activable segments corresponding to the portions of said piezoelectric element, whereby said portions can be individually actuated by supplying said input signal to a number of said electrode segments.
6. A piezoelectric speaker according to claim 5, wherein said segmented electrode is provided on one side of the piezoelectric element, while an unstructured electrode is provided on the opposite side of the piezoelectric element.
7. A piezoelectric speaker according to claim 5, wherein said variation means comprises a plurality of parallel frequency filters, each filter being adapted to receive said input signal and being connected to at least one of said electrode segments.
8. A piezoelectric speaker according to claim 5, wherein said variation means comprises a switch being connected to a frequency detector and having several output ports each connected to at least one of said electrode segments, wherein said switch is adapted to transfer said input signal to a number of said output ports depending on the frequency of said input signal as detected by said frequency detector.
9. A piezoelectric speaker according to claim 1, said speaker being a flat panel speaker.
10. A method for driving a piezoelectric speaker having a membrane and an actuating layer comprising at least one piezoelectric element mounted to said membrane, which at least one piezoelectric element is adapted to, when actuated, cause said membrane to vibrate in order to generate sound, the method including the step of:
varying the fraction of the piezoelectric element that is actuated depending on the sound frequency to be generated.
11. A piezoelectric speaker according to claim 2, wherein said actuating layer comprises a single piezoelectric element.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An image processing apparatus comprising:
one or more processors configured to:
correct a geometric mismatch of optical noise of a left eye image and a right eye image, wherein the geometric mismatch of a first striation and a first light ray occurring in the left eye image and a second striation and a second light ray occurring in the right eye image is corrected, the correction of the geometric mismatch comprising:
performing a noise removal process remove separately generated optical noise on the left eye image and the right eye image, wherein the left eye image and the right eye image are captured by a two-lens type stereoscopic image capturing camera;
detect a striation region comprising a light source, a striation and a light ray, and a striation background region adjacent to the detected striation region from each of the left eye image and the right eye image; and
replace the striation region and the striation background region of one of the left eye image and the right eye image with the striation region and the striation background region of other of the left eye image and the right eye image.
2. The image processing apparatus according to claim 1, wherein the one or more processors are configured to:
divide each of the left eye image and the right eye image into a plurality of regions; and
correlate regions comprising the same subject with each other, or regions of images which are generated by an optically identical cause with each other, of the divided regions of the left eye image and the right eye image;
detect a striation region including a light source, a striation, and a light ray and a striation background region adjacent to the detected striation region from the divided regions of the left eye image and the right eye image; and
replace the striation region and the striation background region of one of the left eye image and the right eye image with the striation region and the striation background region of the other of the left eye image and the right eye image based on the correlation.
3. The image processing apparatus according to claim 1, wherein the one or more processors are configured to:
detect a striation region comprising a light source, a striation, and a light ray and a striation background region adjacent to the detected striation region from each of the left eye image and the right eye image; and
remove the light source, the striation, and the light ray included in the striation region from the left eye image and the right eye image.
4. The image processing apparatus according to claim 3, wherein the one or more processors are configured to:
divide each of the left eye image and the right eye image into a plurality of regions;
detect a striation region from the divided regions of the left eye image and the right eye image; and
remove the light source, the striation, and the light ray included in the striation region from the left eye image and the right eye image.
5. The image processing apparatus according to claim 1, wherein the one or more processors are configured to determine whether the noise removal process is performed.
6. The image processing apparatus according to claim 5, further comprising an input terminal that receives the left eye image, the right eye image, and photographing setting information transmitted from a camera system as input, wherein the one or more processors determine whether the noise removal process is performed based on a diaphragm value included in the photographing setting information.
7. The image processing apparatus according to claim 5, wherein the optical noise is a striation or a light ray, and wherein the one or more processors are configured to determine whether the noise removal process is performed based on the radius of the first and second striations or the first and second light rays occurring in the left eye image and the right eye image.
8. The image processing apparatus according to claim 5, wherein the optical noise is a striation, and wherein the one or more processors are configured to determine whether the noise removal process is performed based on the number of the first and second striations occurring in the left eye image and the right eye image.
9. The image processing apparatus according to claim 5, wherein the optical noise is a striation, and wherein the one or more processors are configured to determine whether the noise removal process is performed based on information of a number of diaphragm blades of a camera lens of a camera used to obtain the left eye image and the right eye image.
10. The image processing apparatus according to claim 5, wherein the optical noise is a striation, and wherein one or more processors are configured to determine whether the noise removal process is performed based on a lasting period of the first and second striations or the first and second light rays occurring in the left eye image and the right eye image.
11. An image processing method comprising:
correcting a geometric mismatch of optical noise of a left eye image and a right eye image, wherein the geometric mismatch of a first striation and a first light ray occurring in the left eye image and a second striation and a second light ray occurring in the right eye image is corrected, the correction of the geometric mismatch comprising:
by performing a noise removal process to remove separately generated optical noise on the left eye image and the right eye image, wherein the left eye image and the right eye image are captured by a two-lens type stereoscopic image capturing camera;
detecting a striation region comprising a light source, a striation and a light ray, and a striation background region adjacent to the detected striation region from each of the left eye image and the right eye image; and
replacing the striation region and the striation background region of one of the left eye image and the right eye image with the striation region and the striation background region of other of the left eye image and the right eye image.
12. A non-transitory computer-readable storage medium having stored thereon, a computer program having at least one code section, the at least one code section being executable by one or more processors for causing a computer to perform steps comprising:
dividing each of the left eye image and the right eye image into a plurality of regions;
correlating regions comprising same subject with each other, or regions of images which are generated by an optically identical cause with each other, of the divided regions of the left eye image and the right eye image;
detecting a striation region comprising a light source, a striation, and a light ray and a striation background region adjacent to the detected striation region from the divided regions of the left eye image and the right eye image; and
replacing the striation region and the striation background region of one of the left eye image and the right eye image with the striation region and the striation background region of other of the left eye image and the right eye image based on the correlation.
13. A non-transitory computer-readable storage medium having stored thereon, a computer program having at least one code section, the at least one code section being executable by one or more processors for causing a computer to perform steps comprising:
dividing each of the left eye image and the right eye image into a plurality of regions;
detecting a striation region comprising a light source, a striation, and a light ray from the divided regions of the left eye image and the right eye image; and
removing the light source, the striation, and the light ray included in the striation region from the left eye image and the right eye image, and generating light source, striation and light ray effects having geometric correlation to view stereoscopic images for the left eye image and the right eye image, wherein generating the light source, striation, and light ray effects comprises:
creating a striation image based on light source information and a virtual optical system; and
synthesizing the striation image with the right eye image and the left eye image.