Abstract: A hash code-based search apparatus includes a token set extracting unit configured to extract a token set having at least one token from a document, a hash code generating unit configured to generate N hash codes by applying N hash functions to the at least one token (where N is a natural number), and an index generating unit configured to generate a search index by indexing the document with the N hash codes.

Abstract: A display device including: a power supply configured to supply a first power, a second power, and a third power to a first power line, a second power line, and a third power line, respectively, wherein each of the first power, the second power and the third power varies in voltage level during one frame period; and pixels connected to at least one of scan lines and data lines, and connected to a common control line, the first power line, the second power line, and the third power line, wherein the pixels simultaneously emit light when the second power is changed to a low level, and a number of times the second power is changed to the low level during the one frame period changes in response to an image refresh rate.

Abstract: The present invention relates to a heteroaryl derivative compound and a use thereof. Since the heteroaryl derivative of the present invention exhibits excellent inhibitory activity against EGFR, the heteroaryl derivative can be usefully used as a therapeutic agent for EGFR-associated diseases.

Abstract: An aberration-compensated image of an object field is created by generating a full-field complex hologram of the object field, generating a guide star complex hologram of a guide star selected from the object field, performing mathematical correlation between the guide star complex hologram and the full-field complex hologram, and generating from the correlation an aberration-compensated image of the object field from the correlation.

Abstract: In one embodiment, generating an aberration-compensated image of an object field includes generating a full-field complex hologram of the object field, generating a guide star complex hologram of a guide star selected from the object field, performing mathematical correlation between the guide star complex hologram and the full-field complex hologram, and generating from the correlation an aberration-compensated image of the object field from the correlation.

Abstract: In one embodiment, generating an aberration-compensated image of an object field includes generating a full-field complex hologram of the object field, generating a guide star complex hologram of a guide star selected from the object field, performing mathematical correlation between the guide star complex hologram and the full-field complex hologram, and generating from the correlation an aberration-compensated image of the object field from the correlation.

Abstract: An image processing apparatus having a third-order nonlinear stimulated photon echo medium (1). The photon echo medium (1) can store large numbers of images in the form of a Fourier transformed pattern by spectral modulation. The spectral modulation is carried out by sending optical pulses in an optical pulse train having (or not having) image information to the medium (1) so that the population in the ground and excited states are modulated after the passage of the pulse trains and pulses. The Fourier transformed pattern is converted back to temporal modulation, consisting of a sequence of echo pulses that reproduce the original data pulse train. By using the apparatus, ultrafast operation such as convolution and correlation between a number of reference images and a test image can be achieved.