Abstract: Provided are an image processing method, a digital image processing apparatus, and a recording medium storing the image processing method. The method includes capturing a first image, a second image, and a third image, which are captured with different focuses for the same subject and background; setting a subject portion and a background portion by using the first and second images; and combining the first image for the subject portion and the third image for the background portion with each other to obtain an out-of-focus image.

Abstract: An image processing apparatus and an image processing method, the method including: providing one or more low dynamic range images having different exposure levels; classifying each of the one of more low dynamic range images as a saturation region, an under-saturation region, and a non-saturation region with respect to an intensity value; generating feature maps indicating a similarity between patterns of the non-saturation regions; generating final feature maps converting pixels included in the feature maps into moving pixels and non-moving pixels; defining moving regions and non-moving regions included in the one or more low dynamic range images; removing noise from the moving regions and the non-moving regions by using a first noise reduction filter for the moving regions and a second noise reduction filter for the non-moving regions; and generating a radiance map corresponding to the one or more low dynamic range images.

Abstract: A method of image processing includes: providing a radiance map, generating a first image in which an edge part is preserved and a flat part is smoothed by applying an edge preservation smoothing filter to the radiance map, generating a second image having a visually perceivable dynamic range by applying a correction curve to the first image, and generating a display image having corrected lightness by adjusting a hue value and a chroma value of the second image.

Abstract: An apparatus, computer readable medium, and a method of controlling a digital photographing apparatus comprising a plurality of optical systems, the method including deriving shake information from the plurality of optical systems; and determining a base optical system from among the plurality of optical systems according to the shake information.

Abstract: A method and apparatus remove color noise of an image signal in which a distortion of a YCbCr color space caused by noise is corrected using correlations between color channels in the YCbCr color space of low frequency (LF) and high frequency (HF) components of an image signal while maintaining the HF component. The apparatus includes: a separator separating the image signal including a luminance signal and a chrominance signal into an LF component and an HF component; an LF noise remover removing noise of the LF component from the image signal; an HF noise remover applying a linear variation rate of the chrominance signal with regard to the luminance signal of the noiseless LF component to the HF component separated from the image signal and generating a new HF component; and a combiner combining the noiseless LF component and the new HF component.

Abstract: A digital photographing apparatus includes a plurality of image pickup units that capture a plurality of images, a first image processing unit that generates a single input image from the plurality of images, a second image processing unit that generates a display image comprising common angle of view information in which the angle of view information of each of the plurality of image pickup units with respect to the single input image overlap, and a display unit that displays the display image. Each of the plurality of images shows a different parallax with respect to a subject, and each of the plurality of image pickup units have angle of view information.

Abstract: A digital image processing apparatus performs an image processing method which includes capturing a first image, a second image, and a third image, which are captured with different focuses for the same subject and background; setting a subject portion and a background portion by using the first and second images; and combining the first image for the subject portion and the third image for the background portion with each other to obtain an out-of-focus image.

Abstract: A method of controlling a digital photographing apparatus successively photographs one short exposure image and a plurality of long exposure images. A global motion of each of the long exposure images is compensated based on the one short exposure image. A Point Spread Function (PSF) of each of the one short exposure image and the long exposure images are extracted. A shake correction image is extracted through a repeat estimation by determining an initial value of the repeat estimation based on the one short exposure image and the long exposure images and using each PSF.

Abstract: A method of estimating a point spread function (PSF) includes: estimating a global motion between a short-exposure image and a long-exposure image that are continuously captured using different exposure times, and compensating for the global motion; calculating a first resultant image by applying a band pass filter to the short-exposure image; calculating a second resultant image by applying the band pass filter to the long-exposure image; converting the first resultant image and the second resultant image into n-level images, where n is an odd natural number greater than or equal to 3, by deducing a first n-level resultant image and a second n-level resultant image from the first resultant image and the second resultant image, respectively; correlating the first n-level resultant image and the second n-level resultant image, and calculating a correlation map; and deducing the PSF from the correlation map.

Abstract: A digital photographing apparatus may perform a method of correcting hand shake to obtain images of high quality, in which hand shake is corrected completely, by correcting the hand shake using a plurality of successive images having different exposure times, and in particular, by determining whether a short exposure image will be obtained from a time period in which hand shake is weak or in a time period in which hand shake is strong according to photographing conditions.

Abstract: A method of controlling exposure under low brightness conditions, comprising calculating an automatic exposure time such that an exposure time is substantially in inverse proportion to the brightness of a subject; when the automatic exposure time is smaller than a first exposure time value, setting a control exposure time as the automatic exposure time; when the automatic exposure time is greater than or equal to the first exposure time and smaller than or equal to a second exposure time, setting the control exposure time as the first exposure time; when the automatic exposure time is greater than the second exposure time, setting the control exposure time to be substantially in proportion to the automatic exposure time such that the control exposure time is smaller than the automatic exposure time by predetermined steps; and increasing sensitivity according to a difference between the automatic exposure time and the control exposure time.

Abstract: A method of displaying scene recognition of a digital image signal processing apparatus includes generating an input image, recognizing a scene of the input image, producing a frame image corresponding to the recognized scene, synthesizing the frame image and the input image to generate an output image, and displaying the output image on a display unit.

Abstract: A sport posture correcting apparatus including a digital image processing apparatus configured to generate a series of image frames. The sport posture correcting apparatus may include a digital signal processing unit configured to set a region in one of the series of generated image frames. The digital signal processing unit may be configured to trace the set region in the series of generated frames to generate a tracing result. The digital signal processing unit may be configured to display the tracing result.

Abstract: A method and apparatus for determining a similarity between an input image and a template image may determine the similarity by using a difference in histogram degree between the input image and the template image, in a reduced period of time, which increases efficiency.

Abstract: A digital image processing apparatus has a tracking function for tracking a location variation of a set tracking area on a plurality of frame images. The digital image processing apparatus includes a similarity calculation unit that calculates a similarity by varying a location of a template on one frame image. The similarity calculation unit calculates a second direction similarity by fixing a first direction location of the template in a first direction on the one frame image and by varying a second direction location of the template in a second direction which is perpendicular to the first direction, and then calculates a first direction similarity by fixing the second direction location of the template at a location where the second direction similarity is the highest and by varying the first direction location of the template in the first direction on the one frame image.

Abstract: A method and apparatus for processing a digital image signal to correct for the effect of hand tremble in a digital photographing apparatus, such as a digital camera or video recorder. The method and apparatus perform the operations of generating original image data, dividing the original image data into at least one block and generating processed image data in which an average of the original image data is calculated according to the block, and decreasing a first contribution of the original image data or increasing a second contribution of the processed image data, as a difference of pixels or blocks between the original image data and the processed image data nears to a boundary.

Abstract: Provided are an image processing method and apparatus for effectively reducing noise in an image, and a recording medium storing a program for executing the method. The image processing apparatus includes a noise reduction unit configured to apply a noise reduction filter to first image data to obtain second image data; a first edge data obtaining unit configured to calculate edge data lost in the second image data compared with the first image data to obtain the first edge data; and a first synthesis unit configured to tune the first edge data and calculate third image data from the second image data and the tuned first edge data.

Abstract: Provided are a digital photographing apparatuses and methods of controlling the same. The method includes: inputting previous preview image data; inputting current preview image data; comparing and determining a pixel value of the previous preview image data and a pixel value of the current preview image data; and controlling the operation of a hand shake correcting unit according to the comparison and determination result. Accordingly, the hand shake correcting unit is selectively turned off by easily detecting a case where hand shake correction is not necessary, such as a case where a tripod is used, thereby reducing power consumption.

Abstract: A method of controlling exposure under low brightness conditions, comprising calculating an automatic exposure time such that an exposure time is substantially in inverse proportion to the brightness of a subject; when the automatic exposure time is smaller than a first exposure time value, setting a control exposure time as the automatic exposure time; when the automatic exposure time is greater than or equal to the first exposure time and smaller than or equal to a second exposure time, setting the control exposure time as the first exposure time; when the automatic exposure time is greater than the second exposure time, setting the control exposure time to be substantially in proportion to the automatic exposure time such that the control exposure time is smaller than the automatic exposure time by predetermined steps; and increasing sensitivity according to a difference between the automatic exposure time and the control exposure time.

Abstract: Provided are a digital photographing apparatus by which a clear image may be obtained despite shaking of the digital photographing apparatus during a photographing operation, a method of controlling the digital photographing apparatus, and a recording medium having recorded thereon a program for executing the method.