Samsung Electronics Co., Ltd.

Eun-sun Ahn

Jin-pyo Gwak

Soon-geun Jang

Won-seok Song

Tae-hoon Kang

Myung-kyu Choi

Ji-hyun Goh

Ung-sik Kim

Hyun-Ock Yim

Soon-Geun Jang

Soon-keun Chang

Lokesh Rayasandra Boregowda

Sankaranarayanan Parameswaran

Jayakrishna Alapati

Ankit Dhiman

A method for generating a high-dynamic-range (HDR) image using an imaging device is provided. The method includes capturing a long-exposure (LE) image, a short-exposure (SE) image, and an auto-exposure (AE) image of a scene, estimating motion information in the SE image and the LE image based on a reference image which is determined based on an image statistics parameter, aligning the SE image and the LE image using the motion information, generating a pixel-weight coefficient for each of the SE image, the LE image, and the AE image, generating an overlapped region mask corresponding to an overlapped region in each of the SE image, the LE image and the LE image, determining a modified pixel-weight coefficient in the overlapped region mask and correcting a brightness difference, and generating an HDR image from the SE image, the LE image and the AE image using the modified at least one pixel-weight coefficient.

Method and apparatus for generating HDR images

An apparatus and a method for processing an image. The method includes: increasing contrast of an input image to generate a first image; adding a mask having a pattern showing an image effect, to the first image to generate a second image; and adjusting a range of pixel values of the second image to generate a resultant image.

Apparatus and method for processing image, and computer-readable storage medium

A method and apparatus update a composition database for storing information for setting a composition. The method includes extracting and displaying at least one composition stored in the composition database, counting a composition selected by a user from among the at least one composition, and updating the composition database according to the result of the count. According to the method, compositions selected by a user from among compositions displayed on a screen are counted, and the result of the count is reflected on the composition database. Accordingly, compositions are displayed in a user-centered manner and photographing convenience is increased, a digital photographing apparatus automatically learns compositions preferred by a user during photographing so as to automatically display the compositions preferred by the user, and a composition based on a pattern of the user is suggested instead of a composition according to a certain place or scene.

Method and apparatus for updating composition database by using composition pattern of user, and digital photographing apparatus

A method of obtaining variance data or standard deviation data for efficiently reducing noise in an image is provided. The method includes (a) dividing an image into a plurality of clusters; (b) checking frequency data of data values of pixels included in each cluster; (c) obtaining a weighted average of the data values of the pixels included in each cluster; (d) obtaining a variance or a standard deviation of the data values of the pixels included in each cluster by using the weighted average; and (e) obtaining variance data or standard deviation data in accordance with weighted averages by using the weighted average and the variance or the standard deviation in each cluster. A digital photographing apparatus is also provided that includes a recording medium storing variance data or standard deviation data for efficiently reducing noise in an image which is obtained in accordance with the above method.

Method of obtaining variance data or standard deviation data for reducing noise, and digital photographing apparatus including recording medium storing variance data or standard deviation data for reducing noise

Provided is a method of controlling a digital photographing device, the method including: removing high-frequency components from a first input image and a second input image; calculating a differential image between the first input image and the second input image from which the high-frequency components are removed; calculating the frequency of each of the pixel values of the differential image; determining at lease one pixel value of the differential image having a frequency greater than a frequency threshold as a target motion range among the pixel values of the differential image greater than a motion threshold; and determining photographing settings corresponding to the target motion range.

Digital photographing device, method of controlling the digital photographing device, and computer-readable storage medium for determining photographing settings based on image object motion

A digital image processing apparatus and tracking method are provided to rapidly and accurately track a subject location in video images. The apparatus searches for a target image that is most similar to a reference image, in a current frame image in which each pixel has luminance, and other, data, the reference image being smaller than the current frame image, and includes a similarity calculator for calculating a degree of similarity between the reference image and each of a plurality of matching images that have the same size as the reference image and are portions of the current frame image; and a target image determination unit for determining one of the plurality of matching images as the target image using the degree of similarity obtained by the similarity calculator. The similarity calculator calculates the degree of similarity by applying greater weight to the other data than to the luminance data.

Digital image processing apparatus, tracking method, recording medium for storing computer program for executing the tracking method, and digital image processing apparatus adopting the tracking method

A method for guiding a user with a suitable composition includes detecting scene information from an input image, recognizing a scene of the input image by using the detected scene information, extracting composition information corresponding to the recognized scene, and displaying the extracted composition information. Accordingly, an apparatus for guiding a user with a suitable composition and a digital photographing apparatus using the method displays a composition suitable for a current scene by automatically recognizing the current scene, so that the user photographs the current scene quickly and easily.

Method and apparatus for guiding user with suitable composition, and digital photographing apparatus

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.

Image processing apparatus and method for tracking a location of a target subject

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.

Method and apparatus for processing a digital image signal, and a recording medium having recorded thereon a program for executing the method

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. The digital photographing apparatus includes a data obtaining unit for obtaining first data of a first image captured using a long time exposure and obtaining second data of a second image captured using a short time exposure; a motion vector extraction unit for extracting a motion vector between a position of a subject in the first image and the position of the subject in the second image; a blurring determination unit for determining whether blurring exists in the first image; a subject location determination unit for determining whether the position of the subject in the first image is identical to the position of the subject in the second image; and a data combination unit for creating data having luminance data of the second data and having composite color data obtained by combining color data of the first and second data, as ultimate data.

Digital photographing apparatus, method of controlling the digital photographing apparatus, and recording medium having recorded thereon a program for executing the method

A digital photographing apparatus, a method of controlling the digital photographing apparatus, and a recording medium having recorded thereon a program for executing the method are provided. The digital photographing apparatus includes: a data obtainer that obtains long exposure first data about a first image of a subject and short exposure second data about a second image of the subject; a third data generator that generates third data about a third image by warping the first data so that the subject of the first image and the subject of the second image match each other; and a second data amender which, when a predetermined condition is satisfied, amends the second data so that the second data value S(x, y) at the pixel (x, y) of the second image has the third data value W(x, y) at the pixel (x, y) of the third image.

Digital photographing apparatus, method of controlling the same, and recording medium having recorded thereon program for executing the method

A digital photographing apparatus capable of obtaining an image in which a distant subject is clearly represented and a near subject is naturally represented, and a method and program for controlling the same. The digital photographing apparatus includes a range determiner for determining a distance between the digital photographing apparatus and a main subject, an image pickup element for generating image data from incident light, an edge data acquisition unit for obtaining edge data in different degrees of extraction of the edge data based on the distance between the digital photographing apparatus and the main subject which is determined by the range determiner, when obtaining the edge data on edges of a subject from the image data, and an image data modifier for modifying the image data based on the edge data obtained by the edge data acquisition unit.

Digital photographing apparatus, and method and program for controlling the same

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.

Growing community of inventors

Suwon-si, South Korea

Eun-sun Ahn