Abstract:
Provided are an imaging device, program, memory medium, and noise reduction method capable of appropriately reducing noise without causing degradation in a target sound such as voice. The imaging device of the present invention has: a video imaging unit for capturing video; a signal converter for converting a sound generated during video capture to a sound signal; subject determination units that predict or recognize a specific subject; a noise detector for detecting noise included in the sound generated during video capture; a noise reduction unit for reducing the noise signal from the sound signal; a voice detector for detecting non-noise signals in the sound signal; and a noise reduction performance change unit that lowers the noise signal reduction performance of the noise reduction unit when the subject determination units predict or recognize the specific subject.
Abstract:
A signal-processing device includes a determination section that compares a frequency spectrum and a floor spectrum of an input audio signal to each other for each frequency bin and determines whether the input audio signal should be subjected to noise reduction processing or not for each of the frequency bins; and a noise reduction-processing section that subtracts a noise frequency spectrum from the frequency spectrum of the input audio signal for each of the frequency bins on the basis of the result determined by the determination section for each of the frequency bins.
Abstract:
A vibration actuator combines plural elastic members and vibration elements to generate torsional vibrations about an axis and longitudinal vibrations in an axial direction. The vibration actuator includes a fixed member passing through a hollow portion of a plurality of vibration elements and supports the vibration elements within a gap in an inner surface of the vibration elements. A combination of semicylindrical members generate a second order torsional vibration around the axis and a first order longitudinal vibration in the axial direction of the vibration actuator. The fixed shaft also passes through a hollow portion of the vibration element. The vibration element and the fixed shaft are affixed by a pin, thereby eliminating a need for a more restrictive connection with bolts. Thus, vibration restriction of the vibration actuator is enhanced and driving efficiency is increased.
Abstract:
An image correcting camera, for precisely detecting translational vibrations of the camera and precisely correcting an image shake, includes an acceleration detector for detecting tri-axis directional accelerations acting on the camera, an angular velocity detector for detecting angular velocities about the tri-axes that act upon the camera, an attitude calculating device for calculating a coordinate transform matrix between a camera coordinate system and a static coordinate system from the tri-axis directional accelerations and the angular velocities about the tri-axes, and a gravitational acceleration component calculating device for calculating a gravitational acceleration component in the camera coordinate system from the coordinate transform matrix. An initial velocity is calculated from the acceleration with an elimination of the gravitational acceleration component, and a velocity is calculated from the acceleration thereof and the initial velocity. A displacement is calculated from this velocity. A correction drive quantity calculating device calculates an image shake quantity based on these values.
Abstract:
Provided are an imaging device, program, memory medium, and noise reduction method capable of appropriately reducing noise without causing degradation in a target sound such as voice. The imaging device of the present invention has: a video imaging unit for capturing video; a signal converter for converting a sound generated during video capture to a sound signal; subject determination units that predict or recognize a specific subject; a noise detector for detecting noise included in the sound generated during video capture; a noise reduction unit for reducing the noise signal from the sound signal; a voice detector for detecting non-noise signals in the sound signal; and a noise reduction performance change unit that lowers the noise signal reduction performance of the noise reduction unit when the subject determination units predict or recognize the specific subject.
Abstract:
An optical device comprises a substrate provided with an insulation portion transmitting light, a first electrode and a second electrode transmitting light provided at said substrate sandwiching said insulation portion, and an output circuit to output voltage to said first electrode and second electrode so as to change an electric field of a surface of said substrate, wherein said first and second electrodes comprise main component which is identical with said insulation portion, and an electric resistivity is lower with respect to said insulation portion.
Abstract:
A noise reduction processing apparatus includes a timing signal detection unit that detects an operation timing signal indicating a timing when an operation unit is operated, an audio signal acquisition unit that acquires an audio signal, and on the basis of the operation timing signal, a noise reduction processing unit that calculates first frequency spectra of an audio signal acquired during a time period which has high possibility that noise caused by an operation of the operation unit is generated and second frequency spectra of an audio signal acquired during a time period which has high possibility that the noise is not generated, and calculates a noise reduction audio signal obtained by performing noise reduction to the audio signal on the basis of frequency spectra in which at least a part of the calculated first frequency spectra are replaced with corresponding portions of the calculated second frequency spectra.
Abstract:
A signal processing apparatus includes a signal transforming unit transforming a first sound signal obtained by dividing a sound signal represented by a time function and by the predetermined time width into a second sound signal represented by a frequency function; a calculating unit determining a third sound signal which has a reduced influence of the operation sound by using the second sound signal and a sound signal representing the operation sound; a correcting unit performing a correction, by setting a sound signal representing the target sound as a reference signal, on the third sound signal based on the reference signal; and a signal inverse transforming unit inverse-transforming a sound signal on which the correction is performed from the sound signal represented by the frequency function into the sound signal represented by the time function.
Abstract:
The present invention provides an image restoration apparatus, a camera and a program which are capable of performing image restoration with simple construction. A specific area within a captured image is specified, and a calculation of a point spread function and the image restoration calculation are carried out using an image in the specific area.
Abstract:
A blur correcting device comprises: a blur correction optical system that corrects an image blur by moving along a direction extending substantially perpendicular to an optical axis; a movable member that includes the blur correction optical system and moves together with the blur correction optical system; a blur correction drive unit that drives the movable member; and a pressure member that applies pressure to the movable member in a direction extending substantially along the optical axis of the blur correction optical system, and switches between a state in which the pressure is applied to the movable member and a state in which no pressure is applied to the movable member by moving within a plane substantially perpendicular to the optical axis.