Abstract:
An adaptive echo canceller for suppressing an echo in an input signal by a pseudo echo, includes a pseudo echo generation filter having a predicted impulse response sequence of an echo path as filter coefficients thereof for generating a pseudo echo, a coefficient renewal part for adaptively renewing the filter coefficients of the pseudo echo generation filter, and a part for suppressing an echo by the pseudo echo which is generated by the pseudo echo generation filter. The coefficient renewal part includes a part for dividing renewed filter coefficients into a plurality of groups each having a certain number of renewed filter coefficents, and a part for successively selecting one group with a predetermined period and carrying out a correction process with respect to the renewed filter coefficients within the selected group, where the correction process corrects an accumulation of errors of renewal processes.
Abstract:
An image pickup apparatus includes: a first base image selection unit selecting a piece of image data as a first base image used in superposition; a shift amount calculation unit calculating an amount of shift between the first base image and another different piece of image data; an image superposition unit detecting a superposing area as an area in which the different piece of image data can be superposed on the first base image after a shift correction is made on a basis of the calculated amount of shift, and performing superposition for the superposing area; a second base image selection unit selecting a piece of image data as a second base image used in a non-superposing area; and an image combination unit combining a superposition result with the non-superposing area in the second base image, and outputting image data as a combination result.
Abstract:
Adaptive image processing device performs image processing with a simple configuration on a composite image including areas having different characteristics by changing a process depending on the number of combined images in each area of the composite image configured by combining a plurality of images. The image processing device acquires a plurality of images and generates a composite image. When the composite image is generated, the image processing device realizes a process of determining the number of combined images for detecting the number of images to be combined for each area of the composite image and holding the number as information about the number of combined images, and an image processing parameter switching process for switching a parameter of image processing to be performed on each area of the composite image according to the information about the number of combined images.
Abstract:
The present invention provides an image shooting device with a camera shake correction function capable of avoiding the deterioration of image quality due to performing camera shake correction. The image shooting control unit of the image shooting device of the present invention can be configured to select to take in either one piece of image data for ordinary image shooting or a plurality of pieces of image data for camera shake correction, on the basis of the determination result of a determination unit. It also can be configured to take in both one piece of image data for ordinary image shooting and a plurality of pieces of image data for camera shake correction.
Abstract:
Adaptive image processing device performs image processing with a simple configuration on a composite image including areas having different characteristics by changing a process depending on the number of combined images in each area of the composite image configured by combining a plurality of images. The image processing device acquires a plurality of images and generates a composite image. When the composite image is generated, the image processing device realizes a process of determining the number of combined images for detecting the number of images to be combined for each area of the composite image and holding the number as information about the number of combined images, and an image processing parameter switching process for switching a parameter of image processing to be performed on each area of the composite image according to the information about the number of combined images.
Abstract:
A voice processing apparatus includes a voice signal acquiring unit that acquires a voice signal converted to plural frequency bands from an input signal having a narrowed band; an expanding unit that generates based on a narrowband component of the voice signal acquired by the voice signal acquiring unit, an expansion band component expanding the band of the voice signal; a correcting unit that corrects the power of the expansion band component by a correction amount determined based on a noise component included in the voice signal acquired by the voice signal acquiring unit; and an output unit that outputs the voice signal of which the band has been expanded based on the expansion band component corrected by the correcting unit and based on the narrowband component of the voice signal acquired by the voice signal acquiring unit.
Abstract:
An image shooting device with a camera shake correction function is provided. The image shooting device is capable of avoiding the deterioration of image quality due to performing camera shake correction. An image shooting control unit of the image shooting device can be configured to select to take in either one piece of image data for ordinary image shooting or a plurality of pieces of image data for camera shake correction, on the basis of the determination result of a determination unit. It also can be configured to take in both one piece of image data for ordinary image shooting and a plurality of pieces of image data for camera shake correction.
Abstract:
Network traffic may be estimated using samples of network activities to identify traffic parameters. A model of the network may be generated using the traffic parameters, and the model can be used to simulate the network using a modified set of parameters. Network traffic may be managed using the results of the simulation. Network traffic can also be managed by intercepting and modifying a control message on a peer-to-peer network.
Abstract:
A shooting device includes a image sensor for capturing an image of a subject, a detection unit detecting stabilization information from the image, a stabilization information recording unit associating a shooting condition during shooting with the detected stabilization information and recording the shooting condition and the stabilization information, and an electronic image stabilization unit. The electronic image stabilization unit extracts the stabilization information corresponding to the shooting condition having a predetermined relationship with the shooting condition by referring to the stabilization information recording unit using the shooting condition, and stabilizes the shooting device shake based on the extracted stabilization information.
Abstract:
A portable radio communication device includes a sound input unit that acquires a sound and converts the sound into an electrical signal, a situation detecting unit that detects the situation of the portable radio communication device, and a control unit that controls the sound input unit in accordance with the detection result of the situation detecting unit. For example, the situation detecting unit detects the inclination of the portable radio communication device and the control unit controls the directivity of the sound input unit in accordance with the inclination detected by the situation detecting unit.