Abstract: A vibrator includes: a housing having an interior space; a vibrating member installed within the housing; a piezoelectric element installed on a top surface of the vibrating member; and space forming parts disposed to face side surfaces of the piezoelectric element, respectively, and forming a space in which a filler is provided, together with the side surfaces of the piezoelectric element.

Abstract: A vibrator includes: a housing having an interior space; a vibrating member having a plate shape, having both end portions fixedly installed within the housing, and including space forming parts disposed on both side surfaces thereof; a piezoelectric element fixedly installed on the vibrating member so as to be disposed inwardly of the space forming parts; and a weighting body disposed on the piezoelectric element and linked to the vibrating member to be vibrated, wherein the piezoelectric element is installed on the vibrating member so as to be disposed to be spaced apart from inner surfaces of the space forming parts at predetermined intervals, and the piezoelectric element includes a main electrode formed by an electrode pair and at least one preliminary electrode formed by an electrode pair and disposed to be spaced apart from the main electrode.

Abstract: There is provided a piezoelectric vibration actuator including: a flat cover member; a vibration portion including a vibration plate that is spaced apart from the cover member in parallel by a predetermined distance and a piezoelectric element that generates a vibration force by repeatedly expanding and contracting according to power applied from the outside; a weight portion disposed on the vibration portion to increase the vibration force of the piezoelectric element; and a binding member fixing the vibration portion and the weight portion. In addition, an enclosure portion is interposed between the weight portion and the vibration portion to enclose the center areas of the vibration portion, thereby making it possible to protect the piezoelectric element.

Abstract: A display apparatus includes a display, a signal processor configured to process an image signal to display an image on the display, and a controller configured to determine at least one region of possible color distortion from an edge area in the image displayed on the display and to change a color of the determined at least one region, based on a probability that a color distortion occurs in the determined at least one region and a replacement color.

Abstract: A display apparatus and a method of processing an image thereof are provided. The method includes identifying at least one area of an input image by analyzing a dynamic range of the input image, obtaining at least one mapping function based on dynamic range information and brightness information of the at least one area and dynamic range information of the display apparatus, obtaining at least one virtual image where the dynamic range of the input image is converted using the at least one mapping function, synthesizing the at least one virtual image and the input image, and outputting the synthesized image.

Abstract: An image processing apparatus includes: a signal receiver configured to receive an input image; an image processor configured to process the input image and generate an output image; a storage configured to store a first patch corresponding to a first pixel of the input image; and a controller configured to control the image processor to generate the output image by applying the first patch stored in the storage to the first pixel.

Abstract: The present disclosure provides a display apparatus including: a display; a signal receiver configured to receive an image signal; a signal processor configured to process the image signal received in the signal receiver; a first sensor configured to sense ambient brightness; and a controller configured to control the signal processor to change grayscale of an output image to be displayed on the display based on characteristics of the image signal and characteristics of the display apparatus if a glare level corresponding to the ambient brightness sensed by the first sensor and brightness of the display is greater than a preset threshold.

Abstract: Disclosed are an image processing apparatus and method that more efficiently process image data. The image processing apparatus includes a vector data manager that receives at least some of all image data and converts the received image data into vector data, a vector processor that receives the vector data from the vector data manager, performs a vector processing operation by using the vector data, and generates output vector data as a result of the vector processing operation, and a synchronizer that controls a timing of when the vector data manager transmits the vector data to the vector processor.

Abstract: A display apparatus for image processing and a method thereof are disclosed. The image processing method of a display apparatus includes receiving an image frame, identifying color where color cast is present by analyzing at least one of an illumination element and a tint element of the received image frame, and correcting color where the color cast is present by using color distribution of the received image frame.

Abstract: An image display device and an image display method are disclosed. The image display device may include a display and a controller configured to change a value of a pixel included in an input image based on a hue value and a saturation value of the pixel and control the display such that the display displays the image in which the value of the pixel has been changed.

Abstract: A horizontal linear vibration motor for securing the straightness of a coil spring and preventing a driving unit, such as a mass body, from axially rotating around the axis of a shaft within a housing due to the rotational property of the coil spring by providing a coil and a magnet for generating a force that enables the reciprocating motion of the driving unit including the mass body and an anti-rotation member provided in the driving unit to slide and come into contact with the housing.

Abstract: There is provided a vibration generating device including: a housing having an internal space; a vibration member having one end fixedly attached to the housing; a piezoelectric element installed on the vibration member; and a mass body fixedly attached to the vibration member, wherein the vibration member includes an installation part on which the piezoelectric element is installed, and an extension part extended from at least one side surface of the installation part, and a maximum displacement portion of the vibration member is changed depending on a vibration mode.

Abstract: An apparatus and method of estimating an image optical flow are provided. The method includes receiving temporally-consecutive first and second images; calculating rates of change of brightness values of pixels in the received temporally-consecutive first and second images; calculating a first optical flow estimation result value of a first pixel within the first image and a second optical flow estimation result value of a second pixel within the second image by using the calculated rates of change; comparing the first optical flow estimation result value with the second optical flow estimation result value; and correcting the first optical flow estimation result value and the second optical flow estimation result value by using a result of the comparison.

Abstract: A method and apparatus for processing numeric calculation are provided. The method includes determining a shift bit and an index bit that falls within an index range of a lookup table from among bits representing a divisor scaled up by an offset, obtaining a replacement value corresponding to an index value of the determined index bit by using the lookup table, multiplying a dividend scaled up by the offset by the obtained replacement value, and outputting a value corresponding to a division operation by correcting a scale of a result of the multiplication using a right shift operation.

Abstract: Provided is an image surveillance method and apparatus. The image surveillance method includes photographing a predetermined place and generating an image signal corresponding to the predetermined place, detecting a change in the image signal by calculating a difference between a current frame and a previous frame of the generated image signal, and generating alarm information corresponding to the detected change in the image signal in order to alarm a user.

Abstract: An image-processing method of removing noise from an image includes: obtaining standard representative values for standard regions of a standard image and reference representative values for reference regions of a reference image, and obtaining a plurality of hierarchical images having different resolutions with respect to the standard image and the reference image based on the standard representative values and the reference representative values; obtaining the standard representative values for the standard regions of the standard image and the reference representative values for the reference regions of the reference image from the hierarchical images; determining a similarity between the standard regions and the reference regions from the standard representative values and the reference representative values; and removing noise by applying filtering to the standard image and the reference image depending on the determined similarity.

Abstract: There is provided a vibration generating apparatus including: an elastic member having both end portions fixed to a housing; a piezoelectric element installed on one surface of the elastic member; and a circuit board connected to the piezoelectric element, wherein the elastic member has support parts formed on both side surfaces of both end portions thereof and bent downwardly in order to be installed in the housing, and a portion of the circuit board passing between the support parts has a flat panel shape.

Abstract: An image processing method includes searching for areas matching each other between a plurality of input images, the plurality of input images comprising a reference image and a target image, generating hierarchical image structures formed of a plurality of hierarchical images having different resolutions with respect to the matching areas between the plurality of input images, repeatedly performing image processing based on a similarity of values of pixels matching each other in the plurality of hierarchical images of the same level by using the hierarchical image structures generated with respect to the matching areas, and generating an output image by using pixel values according to the repeated image processing.

Abstract: There is provided a vibrator including: an elastic member of which both end portions are fixedly attached to a housing; a piezoelectric element installed on one surface of the elastic member; and a circuit board attached to the elastic member to be connected to the piezoelectric element, wherein an opening portion for a connection between the piezoelectric element and the circuit board is provided in the elastic member, and a step portion insertedly disposed in the opening portion is formed at the circuit board.

Abstract: A method for driving a piezo actuator includes detecting consumption current by stepwise sweeping the frequency of an actuator driving signal to drive the piezo actuator vibrated in response to first and second vibration modes from a first reference frequency and determining a frequency at which the consumption current is inflected to be a first resonant frequency, detecting consumption current by stepwise sweeping the frequency of the actuator driving signal from a second reference frequency and determining a frequency at which the consumption current is inflected to be a second resonant frequency, and outputting an actuator driving signal in response to the first resonant frequency and the second resonant frequency.