Abstract: A technology of acquiring and processing light field data for images is provided. A light field data acquisition apparatus includes a modulator with an attenuation pattern to spatially modulate a 4D light field for an image, and a sensor to acquire 2D signals of the spatially modulated 4D light field. By utilizing the attenuation pattern of the modulator, more spatial data may be acquired in a low angular frequency region than that acquired in a high angular frequency region.

Abstract: An apparatus and method for compensating for an artifact of higher order diffusion Magnetic Resonance Imaging (MRI) are provided. The apparatus includes a construction unit configured to construct a diffusion q-space matrix, a correction unit configured to correct an image shift in a phase encoding direction in the constructed diffusion q-space matrix, a reconstruction processing unit configured to reconstruct a q-space of a Diffusion Spectrum Imaging (DSI) based on the corrected image shift, and a tracking processing unit to process a DSI fiber tracking using the reconstructed q-space of the DSI.

Abstract: An apparatus and method for capturing digital images are provided. The digital capturing apparatus includes an image pickup unit obtaining light field data to change a view of a captured image and refocus the captured image, and a data processor generating a refocusing image using the light field data, wherein the image pickup unit performs optical modulation on light beams to obtain light field data of the modulated light beams so that the light beams are identified when two or more of the light beams overlap, and the data processor demodulates the light field data to obtain light field data of the light beams not subjected to the optical modulation.

Abstract: An image processing apparatus may include an image frame determiner to determine one standard image frame and at least one reference image frame using light field data about a scene, a point spread function determiner to determine a point spread function based on sub-pixel displacement between the standard image frame and the at least one reference image frame, an image interpolator to interpolate the standard image frame into a high-resolution standard image frame having a higher resolution than the standard image frame, and an image restorer to restore a high-resolution image by updating the high-resolution standard image frame using the generated high-resolution standard image frame, the point spread function, and the at least one reference image frame.

Abstract: Provided is an image capturing apparatus and method, in which the limit of the application of blurring to an input image is determined with the use of a database of recognizable blur levels, and the input image is processed by applying filtering properties corresponding to variations in digital gain and an exposure time. The image capturing apparatus includes a light reception module which receives an optical signal; and an image processing module which adjusts an exposure time-to-digital gain ratio with reference to the amount of light included in the optical signal.

Abstract: A method and apparatus for correcting color distortion are provided. The method includes detecting a color image of an object. The method further includes correcting color distortion of the detected color image to generate a corrected color image. The method further includes synthesizing color information of the corrected color image and detail information of the detected color image to generate a synthesized color image.

Abstract: A color restoration apparatus is provided.

Abstract: Provided are an apparatus and method for processing a light field image that is acquired and processed using a mask to spatially modulate a light field. The apparatus includes a lens, a mask to spatially modulate 4D light field data of a scene passing through the lens to include wideband information on the scene, a sensor to detect a 2D image corresponding to the spatially modulated 4D light field data, and a data processing unit to recover the 4D light field data from the 2D image to generate an all-in-focus image.

Abstract: Provided are an image processing apparatus and method for restoring a high resolution of an image based on acquired image data using color information. The image processing apparatus selects at least one pixel from among pixels corresponding to narrow-band color information of image data, and estimates wide-band color information of the selected pixel.

Abstract: An optical apparatus and an imaging apparatus capable of facilitating capturing images with a simpler structure are provided. The imaging apparatus includes a color filter divided into a plurality of regions, each of the regions configured to allow light of a preset wavelength range to pass therethrough, a main lens disposed at a front or a rear of the color filter to allow light to pass therethrough, and an optic unit to allow the light passing through the color filter or the main lens to pass therethrough.

Abstract: An apparatus and method for obtaining a three-dimensional image. A first multi-view image may be generated using patterned light of infrared light, and a second multi-view image may be generated using non-patterned light of visible light. A first depth image may be obtained from the first multi-view image, and a second depth image may be obtained from the second multi-view image. Then, stereo matching may be performed on the first depth image and the second depth image to generate a final depth image.

Abstract: An image processing apparatus and image processing method capable of providing a high-resolution image for a desired position by use of light field data are provided. The image processing apparatus may determine a position of a portion of light field data among light field data corresponding to a scene, according to a desired focusing position, generate a refocusing first image by use of the position determined portion of light field data, generate a high-resolution image having a predetermined setting ratio relative to the refocusing first image, determine a ratio for local synthesis between the high-resolution image and an enlarged image of the refocusing first image by use of a similarity with respect to the position determined portion of light field data, and generate a synthesized image by synthesizing the high-resolution image and the enlarged image of the refocusing first image according to the local synthesis ratio.

Abstract: An auto-focus method, medium, and apparatus for image-capturing. The auto-focus method includes obtaining a first image by placing a focus lens of a corresponding image-capturing apparatus at a first fixed position, obtaining a second image by placing the focus lens at a second fixed position; calculating blur levels of the first and second images, and determining a position of the focus lens by substituting the blur levels of the first and second images into each of a plurality of blur level relational expressions, which are derived from a plurality of pairs of images of respective corresponding objects at different distances from an image sensor module, each of the pairs of images being obtained by placing the focus lens at the first and second fixed positions, respectively.

Abstract: A method and apparatus to auto focus are provided. A distance classifier to auto focus includes a distance-calculating module calculating a focal distance on the basis of blur levels of at least two images; a precise distance-calculating module calculating the exact distance to a subject when an image that is captured at the focal distance calculated by the distance-calculating module is out of focus; and a distance-calculation-correcting module correcting the distance-calculating module on the basis of the blur levels and the exact distance to the subject that is calculated by the precise distance-calculating module.

Abstract: An apparatus and method to control the focusing of a photographing device, in which a light source portion is removed from an image, is provided. The focusing of the photographing device is controlled according to whether the image is in a high- or low-illuminance state. The apparatus includes a luminance detection unit detecting respective luminance values of pixels included in an image; a filter unit outputting values corresponding to the detected luminance values; a threshold calculation unit counting a number of pixels having luminance values greater than a predetermined value among the luminance values of the pixels included in the image and calculating a threshold value using a ratio of the counted number of pixels to a total number of pixels included in the image; and a control unit controlling a position of a lens using output values greater than the calculated threshold value among the output values.

Abstract: A technology of acquiring and processing light field data for images is provided. A light field data acquisition apparatus includes a modulator with an attenuation pattern to spatially modulate a 4D light field for an image, and a sensor to acquire 2D signals of the spatially modulated 4D light field. By utilizing the attenuation pattern of the modulator, more spatial data may be acquired in a low angular frequency region than that acquired in a high angular frequency region.

Abstract: Disclosed are an apparatus and method for acquiring light field data using a variable modulator. The apparatus varies a modulator located between an optical system and a sensor adaptively according to objects to be captured or a peripheral environment. Accordingly, 4-dimensional (4D) light field data optimized according to objects to be captured or according to changes in focal distance may be acquired.

Abstract: An image processing apparatus may include an image frame determiner to determine one standard image frame and at least one reference image frame using light field data about a scene, a point spread function determiner to determine a point spread function based on sub-pixel displacement between the standard image frame and the at least one reference image frame, an image interpolator to interpolate the standard image frame into a high-resolution standard image frame having a higher resolution than the standard image frame, and an image restorer to restore a high-resolution image by updating the high-resolution standard image frame using the generated high-resolution standard image frame, the point spread function, and the at least one reference image frame.

Abstract: An apparatus for capturing an image of a scene including an image capturing unit and a data processing unit. The image capturing unit may generate light field data and may include a first optical having at least two portions with at least two different fields of view, a sensing unit having a plurality of photosensors, and a second optical unit interposed between the first optical unit and the sensing unit. The data processing unit may perform at least one of change of view of the image and refocusing the generated light field data. The sensing unit may be configured to obtain an image with at least two magnifications corresponding to regions of the scene.

Abstract: An apparatus and method for capturing digital images are provided. The digital capturing apparatus includes an image pickup unit obtaining light field data to change a view of a captured image and refocus the captured image, and a data processor generating a refocusing image using the light field data, wherein the image pickup unit performs optical modulation on light beams to obtain light field data of the modulated light beams so that the light beams are identified when two or more of the light beams overlap, and the data processor demodulates the light field data to obtain light field data of the light beams not subjected to the optical modulation.