Abstract: A method of encoding moving pictures using a plurality of quantization matrices. The method involves selecting one of the plurality of quantization matrices in consideration of an at least one characteristics of an input image; transforming the input image; and quantizing the transformed input image using the selected quantization matrix.

Abstract: An optical touch sensing method includes sensing light corresponding to a touch region, comparing a first amount of the light sensed corresponding to the touch region with a first lower threshold, determining that a touch is made if the first amount is less than or equal to the first lower threshold, comparing the first amount of the light sensed corresponding to the touch region with an upper threshold, and determining that a touch is made if the first amount is greater than or equal to the upper threshold.

Abstract: A mercury selective fluorescent chemosensor for detecting mercury ions by a compound represented by formula 1 and a novel fluorescent sensitive compound prepared by introducing two aminopyrene functions as a fluorescent sensitive moiety into a binding site of the compound of formula 1 is used for selectively detecting mercury ions are provided. The mercury selective fluorescent sensitive chemosensor is a switch type chemosensor having ON-OFF-type Hg2+-selective fluorescence quenching behavior and is not affected by other coexistent metal ions. Changes in fluorescence of the compounds of formula 1 were analyzed by ratiometric approach using monomer and excimer emissions of the pyrene fluorophore to selectively signal the concentration of mercury ions. The chemosensor can detect mercury ions in a micromolar unit even in a solution including an excess of water. Accordingly, the mercury selective fluorescent chemosensor for detecting mercury ions can be used effectively in environmental and medical applications.

Abstract: An image processing apparatus and an image processing method, the image processing apparatus including: an image input unit which receives an image; and an image processing unit which generates reference data on the basis of a plurality of learning images classified into a plurality of first classes according to a noise characteristic and a plurality of second classes according to an image characteristic, and which performs scaling for the received image on the basis of the generated reference data.

Abstract: A video encoding method includes generating a primary error image by performing motion estimation and compensation on a current frame with reference to a previous frame, generating a secondary error image by performing motion estimation and compensation on the primary error image of the generated current frame with reference to an error image of the previous frame. The error image of the previous frame is obtained by performing motion estimation and motion compensation on the previous frame when the previous frame is encoded.

Abstract: An apparatus for processing digital input signals transferred from a plurality of circuit breakers includes: a plurality of signal input terminals configured to receive a plurality of digital input signals, which are generated from the plurality of circuit breakers and indicate an ON/OFF state of the plurality of circuit breakers, in parallel; a digital input signal parallel-to-serial converting unit configured to convert the parallel digital input signals from the plurality of signal input terminals into serial digital input signals, and output the converted serial digital input signals according to a control signal; and a controller configured to receive and process the serial digital input signals transferred from the digital input signal parallel-to-serial converting unit, and transmit the control signal to the digital input signal parallel-to-serial converting unit.

Abstract: A directional interpolation method and a video encoding/decoding apparatus and method using the directional interpolation method. The directional interpolation method includes selecting one of a plurality of directional interpolation modes for a predetermined-size block based on the characteristics of input image data, performing directional interpolation on the predetermined-size block based on the selected directional interpolation mode, and generating mode information indicating the selected directional interpolation mode.

Abstract: Provided are an image encoding/decoding method and apparatus, in which one of a plurality of color component images of an input image is predicted from a different color component image using a correlation between the color component images and the encoding order of the plurality of color component images is adaptively determined according to the characteristics of the input image. In the image encoding method and apparatus, prediction errors or the amounts of generated bits for the remaining color component images predicted using a previously encoded color component image according to encoding orders are compared to determine the optimal encoding order and encoding is performed using a correlation between the color component images according to the determined encoding order.

Abstract: Provided is an encoding method capable of reducing a blocking phenomenon that occurs when moving-images are encoded and decoded. The method includes: performing a first encoding operation on an input image using a first quantization coefficient; generating a reconstructed image of the encoded image; calculating a difference between corresponding partial images of the reconstructed image and the input image; and performing a second encoding operation on the calculated difference using a second quantization coefficient smaller than the first quantization coefficient. Using the second encoded difference, a decoding unit can reconstruct an image of a block boundary portion more elaborately with a small number of bits, thereby significantly reducing the blocking phenomenon in the decoding operation.

Abstract: The present invention relates to a piezoelectric energy harvester having a high energy transformation efficiency and a low natural frequency. The piezoelectric energy harvester includes an elastic substrate having a spiral spring structure, a first electrode formed on the elastomeric substrate, a piezoelectric film formed on the first electrode and a second electrode formed on the piezoelectric film.

Abstract: A replaceable ink reservoir adapted to an inkjet print system is provided. Since the inkjet print system of the conventional arts drives an air pump to inject air into the ink reservoir to discharge the ink stored in the ink storage pack to a printer cartridge, serious noise may be generated when the air pump is driven. In addition, in order to discharge the ink through the injection of the air, the ink reservoir should be one integrated body having a hermetically sealed structure, therefore, a user cannot visually check an ink storage level in the ink storage pack from the exterior of the ink reservoir. Further, since a nozzle connecting pipe is always connected to an ink outlet port connected to a front end of the ink storage pack, it is difficult to uniformly maintain discharge pressure of the ink, thereby causing an error image to be formed on a recording medium.

Abstract: A visual inspection apparatus includes a plurality of cameras for photographing a display panel and a processor for processing the photographed image. Specifically, the visual inspection apparatus includes: a work table having a panel mounting unit on which a display panel is mounted; a camera module which is disposed in a direction normal to the panel mounting unit and which has a plurality of cameras arranged in a matrix; and a processor for processing the images of the display panel photographed with the cameras. The plurality of cameras is arranged in a matrix with variable distances between the cameras. Since the visual inspection apparatus includes the cameras arranged in a matrix, it can be used to effectively detect a variety of defects.

Abstract: Provided are a method and apparatus for generating a media signal by using state information. The method using the apparatus includes acquiring at least one type of state information selected from state information about a subject and state information about the apparatus, and generating a media signal by using the at least one type of state information.

Abstract: A video encoding method and apparatus, and a video decoding method and apparatus, which are capable of improving efficiency of encoding a luminance component video signal by predicting information on various encoding modes of the luminance component video signal by using a result obtained by encoding a chrominance component video signal, are provided. Accordingly, a block mode and an intra-prediction mode of the luminance component video signal are predicted from a previously encoded and recovered chrominance component video signal, and the predicted block mode and the predicted intra-prediction mode are used to encode the luminance component video signal.

Abstract: A method and apparatus for transmitting and receiving wireless multi-band stream signals using optimal resolution in a wireless digital television transmitter/receiver environment.

Abstract: Provided is a method for controlling a buffer in a transmitter and a receiver of a video transmission system in an environment where a channel transfer rate varies. The method includes: if a channel transfer rate is changed, changing a capacity of a buffer in a transmitter being used in proportion to the c rate, the buffer temporarily storing and outputting the video data to a receiver, or changing the delay time of a buffer in the receiver by gradually changing an operating clock in the receiver.

Abstract: Provided are video encoding and decoding methods and apparatuses for encoding a video by variably selecting one from two or more difference color formats. Accordingly, by using at least one of channel state information and a result of encoding a video in a predetermined encoding unit encoded in advance, whether or not to convert a video in a current encoding unit of an input RGB (red, green, blue) color format into a YCbCr color format is adaptively determined to perform encoding. Therefore, a video with uniform quality corresponding to a channel environment having a variable bit-rate can be provided.

Abstract: A method and apparatus for coding an image capable of performing a prediction coding process by using a correlation degree between neighboring pixels of a current block and neighboring pixels of a reference block, and an image decoding method and apparatus. In the method, reference block candidates having neighboring pixels similar to the neighboring pixels of the current block are selected, matching errors between selected reference block candidates and the current block are calculated, and a reference block candidate having the least matching error is determined to be a predicted block of the current block.

Abstract: A ring type piezoelectric ultrasonic resonator includes a piezoelectric ceramic segmented for each quarter of wavelength of an applied AC electric field, wherein the piezoelectric ceramic is alternately polarized in polarization units each having two segments, and a sine wave AC electric field and a sine wave AC electric field having a predetermined phase difference from the sine wave AC electric field are alternately applied to each of the segments. Further, the number of the segments of the piezoelectric ceramic is an integral multiple of 4. Moreover, the sine wave AC electric field applied to each of the segments of the piezoelectric ceramic has a phase difference of 90-degree with respect to adjacent segments.

Abstract: Provided are a bit rate control method and apparatus for intra-only coding, the method including calculating a similarity between at least one block group from among block groups including a plurality of macroblocks in a current frame to be encoded and at least one block group in a previous frame, which corresponds to the at least one block group in the current frame, determining a target bit amount of a current block group including a current macroblock using a video characteristic of the previous frame if the calculated similarity is greater than a threshold value, determining a target bit amount of the current macroblock based on the determined target bit amount of the current block group, and calculating a quantization parameter of the current macroblock based on the determined target bit amount of the current macroblock and the amount of bits generated for up to a previous macroblock.