Abstract: A method, medium, and apparatus for setting an exposure time is provided. The apparatus includes a section setting module which sets one or more luminance sections based on a luminance distribution of an input image, an image division module which divides the input image into two or more regions, a region classification module which classifies the regions into the luminance sections, and an exposure-time setting module which sets an exposure time for each of the regions with reference to a target luminance value, the target luminance value being set based on the results of the classification performed by the region classification module.

Abstract: An image-registration method, medium, and apparatus obtaining first and second images, generating first and second image pyramids based on the first and second images, respectively, by performing sub-sampling which reduces the length and width of each of the first and second images by half, and determining one of five directions as an optimal movement direction for a current level of the first and second image pyramids based on two images belonging to a corresponding level, updating a motion vector for the current level based on the optimal movement direction for the current level and updating a first image belonging to a level directly below the current level based on the updated motion vector for the current level, wherein the updating comprises updating a motion vector for each of a plurality of levels of the first and second image pyramids in an order from an uppermost level to a lowermost level.

Abstract: A CMOS (Complementary Metal-Oxide Semiconductor) image sensor is provided. A CMOS image sensor includes a first light-receiving unit converting light into charge, a first floating diffusion region, in which a first potential corresponding to the converted amount of charge is generated and a second floating diffusion region, to which the charge in the first floating diffusion region is transmitted, and in which a second potential is generated, wherein a wide dynamic range signal is acquired from the first floating diffusion region, a high-sensitively signal is acquired from the second floating diffusion region, and the acquired signals are synthesized and output.

Abstract: An apparatus, method, and medium for generating an image is provided. The apparatus includes an optical module, a filter module which includes a wide-band filter area that allows transmission of optical signals within a wavelength band corresponding to a color of a predetermined color, a narrow-band filter area that allows transmission of optical signals within a wavelength band corresponding to the predetermined color, and an all-pass filter area that allows transmission of optical signals in all wavelength bands, and an image generation module which generates an image by processing optical signals that transmit through the filter module, wherein the image generation module applies different weights to optical signals according to which of the wide-band filter area, the narrow-band filter area, and the all-pass filter area the optical signals respectively transmit through.

Abstract: Provided is an apparatus and method for enhancing an image by optimizing exposure and grayscale. The apparatus includes a component-extracting unit separating luminance signals and color signals from input image signals; a luminance-enhancing unit enhancing the luminance of the luminance signals; and a contrast-enhancing unit dividing the luminance signal having the enhanced luminance into one or more local areas, and enhancing the contrast of the luminance signal having the enhanced luminance for each local area.

Abstract: Provided are a noise reduction apparatus having an edge enhancement function and a method thereof, in which edges in an input image can be prevented from being blurred when reducing noise in the input image and a clear output image can be obtained by reducing edge discontinuities. The noise reduction apparatus includes a window setting module which sets a portion of an input image as a window, an edge-information detection module which detects edge information regarding the window, an image processing module which performs an image processing operation on the window, and an output-image generation module which generates an output image by reflecting the edge information into one or more windows obtained by the image processing operation.

Abstract: An image photographing apparatus and method, and more particularly, an image photographing apparatus and method that may divide each unit sensor of an image sensor into a high-sensitivity sensor and a low-sensitivity sensor and sense an incident optical signal using the high-sensitivity sensor and the low-sensitivity sensor. The image photographing apparatus may include a light reception unit receiving an optical signal, a sensor unit sensing the optical signal, which is incident to a pixel region, using a plurality of sensors with different sensitivity and converting the sensed optical signal into a plurality of electrical signals, and a signal extraction unit extracting the quantity of accumulated electric charge for the optical signal, which was sensed by each of the sensors, with reference to each of the electrical signals.

Abstract: A method and an apparatus enhance a local luminance of an image, and a computer-readable recording medium stores a computer program that enhances a local luminance of an image. The method includes: selecting a local area with a luminance to be compensated for from a luminance space, the luminance space representing a luminance of the input image; and compensating for the luminance of the selected local area.

Abstract: A method and apparatus for generating an image is provided. The method includes acquiring a plurality of images using different exposure amounts, white-balancing each of the raw images, and synthesizing the white-balanced images producing as a result an absolute HDR image.

Abstract: Provided are an apparatus and a method for capturing images by applying different color filters to two pixel regions with IR blocking filters removed so that optical signals in the visible band and IR signals can be received. The apparatus includes a filter unit having a plurality of filters having different wavelength bands; a sensor unit sensing optical signals passing through the filters; and a signal-extraction unit extracting detailed optical signals in respective wavelength bands by using the difference between the sensed optical signals.

Abstract: The present invention relates to a method and apparatus for reducing noise. A method of reducing noise according to an aspect of the present invention includes calculating a noise level of a reference pixel forming an input image, determining a weighted value to be allocated to the reference pixel based on similarity of a reference window including the reference pixel with respect to at least one comparative window existing in a comparative region of the input image and having the same size as the reference window, and the calculated noise level of the reference pixel, and filtering the input image using the determined weighted value.

Abstract: A system, medium, and method with noise reducing adaptive saturation adjustment. The system with adaptive saturation adjustment includes a luminance value extracting unit extracting luminance values of an input image, and a saturation adjusting unit adjusting saturation components of the input image on the basis of the extracted luminance values.

Abstract: An image compensation apparatus and method is provided. The image compensation apparatus includes a power control module which controls a light emitting unit according to a power control input signal input thereto by a user and provides power reduction information corresponding to the power control input signal, a control parameter generation module which determines a threshold based on the power reduction information, an image compensation module which divides input image information according to the threshold and converts the input image information according to image control information, and an output module which outputs image information obtained by the conversion performed by the image compensation module.

Abstract: A system, method and medium correcting brightness of an image, and more particularly, a system, method and medium correcting brightness of an acquired image to achieve a target brightness. The system includes an initial brightness sensing unit to sense an initial brightness of the image from an initial exposure, and an image correction unit to correct the brightness of the sensed initial image toward a target brightness using predetermined brightness information corresponding to a sensed brightness environment of the image.

Abstract: An image photographing apparatus, method and medium that can enhance color reproducibility and sensitivity. The image photographing apparatus includes a filter unit having a first filter region to pass at least one band of an incident light signal corresponding to a complementary color of a first color, and a second filter region to pass all bands of the incident light signal, wherein the first filter region and the second filter region are each formed in one of two adjacent pixels, and an image sensor unit to sense an image from the incident light signal that passes through the filter unit, the image sensor unit including a plurality of photoelectric conversion layers each having a different spectral sensitivity.

Abstract: A method, medium and system processing an image signal. The system includes an edge detection module to detect a pixel belonging to an edge in an input image, a period determination module to determine a period of change in pixel values based on a first value of the pixel belonging to the edge and a second value of a pixel that is adjacent to the pixel belonging to the edge, and a signal correction module to correct one or more sub-pixels of the pixel belonging to the edge using a weight allocated according to a result of the determination performed by the period determination module.

Abstract: Provided is an image generation system and method, more particularly, an image generation system and method which can generate a high dynamic range image from a plurality of images acquired in a single short exposure. The image generation system To includes an image generation system having an image acquisition unit to acquire an image, an image generation unit to generate, from the acquired image, a plurality of images with different resolution and brightness, and an image synthesis unit to synthesize the generated images.

Abstract: A method of converting image signals for a display device including six-color subpixels is provided, which includes: classifying three-color input image signals into maximum, middle, and minimum; decomposing the classified signals into six-color components; determining a maximum among the six-color components; calculating a scaling factor; and extracting six-color output signals.

Abstract: Provided is an image display device, more particularly, an apparatus and method that can reduce power consumption and prevent image characteristics from being degraded in an image display device using a multicolor light source.

Abstract: An apparatus and method for correcting an edge are provided. The apparatus includes a luminance corrector obtaining a corrected luminance value of a center pixel in a first window of a predetermined size, the first window located at the edge of the input image, by using weights assigned according to a luminance difference between the center pixel and each of a plurality of adjacent pixels in the first window or a predetermined difference of variance (DoV) value representing the degree of uniformity in the luminance between the center pixel and each of the plurality of adjacent pixels; and a chrominance corrector correcting a chrominance value of the edge using weights assigned according to a luminance difference between a center pixel and a plurality of adjacent pixels to the center pixel in a second window of a predetermined size based on the corrected luminance value.