Abstract: Disclosed herein are an image processor, an ultrasonic imaging device, and an image processing method. The image processor includes a signal input unit configured to receive an input signal on a channel, a weighting coefficient database configured to store a weighting coefficient wherein the weighting coefficient is part of a weighting coefficient subgroup, and a processor configured to select the weighting coefficient subgroup from the weighting coefficient database, and convert the input signal by selecting and using the weighting coefficient from the weighting coefficient subgroup.

Abstract: An image processing unit includes an input unit configured to receive image data of at least one image, a plurality of filters configured to filter the image data to generate a plurality of filtered images, and an image generator configured to compare the plurality of filtered images in a comparison to select at least one pixel from the plurality of filtered images according to results of the comparison.

Abstract: Disclosed herein are an ultrasonic imaging apparatus and an image display method thereof. The ultrasonic imaging apparatus includes an ultrasonic probe configured to transmit ultrasonic signals toward an object and to receive ultrasonic signals reflected by the object, a beamformer configured to perform beamforming based on the ultrasonic signals received by the ultrasonic probe, and an image processor configured to generate an ultrasonic image of an examined region within the object based on the beamforming, to extract characteristic information which relates to the examined region from the generated ultrasonic image, and to judge whether or not the examined region coincides with a target region based on the extracted characteristic information, thus facilitating a determination as to with which region within the object the examined region corresponds based on various pieces of the characteristic information of the examined region extracted via analysis of the ultrasonic image.

Abstract: An ultrasonic probe includes a multi-dimensionally arrayed transducer, a matching layer, and a backing layer. The transducer includes element groups having different focal distances and simultaneously transmitting ultrasonic signals toward an object. According to the ultrasonic imaging apparatus using the multi-dimensionally arrayed transducer, a multi-focus transmission is performed. Thus, the multi-focus ultrasonic image may be acquired within a short period of time, thereby increasing frame rates, and a high-quality image in which all areas are focused may be quickly acquired.

Abstract: A method of processing an image, including estimating a point spread function (PSF) of an acquired image, and performing image restoration on the acquired image using the estimated PSF based on a generalized Gaussian model using inverse filter frequency domain so as to perform image restoration at high speed and to prevent a halo effect. The method provides high speed processing while preventing a halo effect. The apparatus includes an ultrasonic imaging apparatus including: an ultrasonic probe to irradiate an object with ultrasonic waves and to receive ultrasonic echo waves reflected from the object; a beamformer configured to perform beam forming based on the ultrasonic echo waves received by the ultrasonic probe; an image restorer configured to restore the image beam formed by the beamformer based on a generalized Gaussian model; and an postprocessor configured to suppress noise and aliasing which are produced in the process of restoring the image.

Abstract: A beamforming module includes a conversion unit configured to convert an input signal to generate a converted signal using at least one conversion function, a weight calculator configured to calculate a converted signal weight as a weight for the converted signal, and a synthesizer configured to generate a result signal using the converted signal and the converted signal weight.

Abstract: Disclosed herein are a beamforming method, a method of determining a beamforming coefficient, and an ultrasonic imaging apparatus.

Abstract: A method, medium, and apparatus canceling noise from a mixed sound. The method includes receiving sound source signals including a target sound and noise, extracting at least one feature vector indicating an attribute difference between the sound source signals from the sound source signals, calculating a suppression coefficient considering ratios of noise to the sound source signals based on the at least one extracted feature vector, and canceling the sound source signals corresponding to noise by controlling an intensity of an output signal generated from the sound source signals according to the calculated suppression coefficient. Accordingly, a clear target sound source signal can be obtained.

Abstract: A beamformer for forming a reception beam using a multichannel signal reflected from a subject is provided. The beamformer includes a signal generator that may generate a plurality of signals to which different apodization functions are applied, with respect to the multichannel signal, an estimator that may estimate a signal predominant component and a noise predominant component from the plurality of signals, a weight calculator that may calculate a weight to be applied to the signal predominant component according to each of channels, using the estimated signal predominant component and the estimated noise predominant component, and a weight applier that may apply the calculated weight to the estimated signal predominant component.

Abstract: A diagnosis image generation apparatus is provided. The diagnosis image generation apparatus includes a low resolution image signal synthesis unit configured to synthesize each of a plurality of low resolution image signals by using a signal reflected from a subject, a weight calculation unit configured to calculate a weight, which is used to synthesize a high resolution image signal, with a signal value which corresponds to each of positions of some pixels among a plurality of signal values corresponding to respective positions of a plurality of pixels forming each of the synthesized low resolution image signals, and a high resolution image signal synthesis unit configured to synthesize the high resolution image signal by applying the calculated weight to each of the low resolution image signals.

Abstract: Provided is a sound source signal filtering method and apparatus. The sound source signal filtering method includes: generating two or more microphone output signals by combining sound source signals input through a plurality of microphones; calculating distances between the microphones and a sound source from which the sound source signals are emitted by using distance relationships according to frequencies of the sound source signals extracted from the generated microphone output signals; and filtering the sound source signals to obtain one or more sound source signals corresponding to a predetermined distance by using the calculated distances. Accordingly, it is possible to obtain only sound source signals emitted from a sound source at a particular distance from the microphone array among a plurality of sound source signals input through the microphone array.

Abstract: An image processing module includes a beamforming unit configured to provide a beamformed signal based on an input signal; a point spread function (PSF) database comprising at least one two-dimensional point spread function obtained based on at least one situational variable of the beamformed signal; and an image generation unit configured to select at least one two-dimensional point spread function from the point spread function database and perform deconvolution using the beamformed signal and the selected at least one two-dimensional point spread function to generate an image of a target portion of an object.

Abstract: Provided is a sound source signal filtering method and apparatus. The sound source signal filtering method includes: generating two or more microphone output signals by combining sound source signals input through a plurality of microphones; calculating distances between the microphones and a sound source from which the sound source signals are emitted by using distance relationships according to frequencies of the sound source signals extracted from the generated microphone output signals; and filtering the sound source signals to obtain one or more sound source signals corresponding to a predetermined distance by using the calculated distances. Accordingly, it is possible to obtain only sound source signals emitted from a sound source at a particular distance from the microphone array among a plurality of sound source signals input through the microphone array.

Abstract: An apparatus and method for generating an ultrasonic image are provided. The apparatus includes a transceiver configured to transmit an ultrasonic signal to an object, and receive an echo signal. The apparatus further includes a beam former configured to perform beamforming on the received echo signal to generate image data. The apparatus further includes a point spread function (PSF) estimator configured to update a PSF of the ultrasonic signal at each multiscale level to update the image data.

Abstract: A diagnostic image generating apparatus, a medical image system, and a beamforming method are provided. The diagnostic image generating apparatus includes a transmitting unit configured to transmit a modulated transmission signal to a subject, a reception beamforming unit configured to form a reception beam by beamforming echo signals reflected from the subject, a point spread function (PSF) estimating unit configured to estimate a PSF for each region according to the formed reception beam, a filtering unit configured to filter the formed reception beam according to the estimated PSF, and a diagnostic image generating unit configured to generate a diagnostic image according to the filtered reception beam.

Abstract: Provided is a sound source signal filtering method and apparatus. The sound source signal filtering method includes: generating two or more microphone output signals by combining sound source signals input through a plurality of microphones; calculating distances between the microphones and a sound source from which the sound source signals are emitted by using distance relationships according to frequencies of the sound source signals extracted from the generated microphone output signals; and filtering the sound source signals to obtain one or more sound source signals corresponding to a predetermined distance by using the calculated distances. Accordingly, it is possible to obtain only sound source signals emitted from a sound source at a particular distance from the microphone array among a plurality of sound source signals input through the microphone array.

Abstract: A beamformer for forming a reception beam using a multichannel signal reflected from a subject is provided. The beamformer includes a signal generator that may generate a plurality of signals to which different apodization functions are applied, with respect to the multichannel signal, an estimator that may estimate a signal predominant component and a noise predominant component from the plurality of signals, a weight calculator that may calculate a weight to be applied to the signal predominant component according to each of channels, using the estimated signal predominant component and the estimated noise predominant component, and a weight applier that may apply the calculated weight to the estimated signal predominant component.

Abstract: Provided are an apparatus and method for preventing noise. The apparatus estimates a noise signal from a signal transformed into a frequency domain, uses the estimated noise signal to estimate the amplitude of the frequency-domain signal according to a frequency band, and then calculates a phase difference according to a frequency band and eliminates or prevents noise from the amplitude-estimated frequency-domain signal based on the calculated phase difference according frequency band.

Abstract: A diagnosis image generation apparatus is provided. The diagnosis image generation apparatus includes a low resolution image signal synthesis unit configured to synthesize each of a plurality of low resolution image signals by using a signal reflected from a subject, a weight calculation unit configured to calculate a weight, which is used to synthesize a high resolution image signal, with a signal value which corresponds to each of positions of some pixels among a plurality of signal values corresponding to respective positions of a plurality of pixels forming each of the synthesized low resolution image signals, and a high resolution image signal synthesis unit configured to synthesize the high resolution image signal by applying the calculated weight to each of the low resolution image signals.

Abstract: A method of generating a diagnosis image includes receiving signals reflected from a subject; calculating a beamforming coefficient using the received signals; synthesizing each of the plurality of low resolution images using the calculated beamforming coefficient; and synthesizing a high resolution image using the synthesized plurality of low resolution images.