Electronics and Telecommunications Research Institute

Hye-Sun Kim

Yun Ji Ban

Chang-Joon Park

Jung Jae Yu

Seung Woo Nam

Hae Dong Kim

Chang-Woo Chu

Kyung Ho Jang

Ho Wook Jang

Myung Ha Kim

Dong-Wan Ryoo

Jung-Jae Yu

Kyung-Kyu Kang

Man-Hee Lee

Yun-Ji Ban

Provided is a method of separating a terrain model and an object model from a three-dimensional integrated model and an apparatus for performing the same. A separation method according to various example embodiments includes creating separation information about an integrated model based on a multi-viewpoint image including an object on a terrain, model information of the integrated model obtained by restoring the multi-viewpoint image in three dimensions, and information of an image shooting device shooting the multi-viewpoint image, and separating a terrain model and an object model from the integrated model based on the separation information.

Method of separating terrain model and object model from three-dimensional integrated model and apparatus for performing the same

Disclosed herein are an apparatus and a method for generating a texture map for a three-dimensional (3D) wide area terrain. The method for generating a texture map for a 3D wide area terrain includes acquiring input images, obtained by capturing a reconstruction target terrain at multiple views, and a camera parameter corresponding to the input images, partitioning the reconstruction target terrain into tiles of a uniform size, reconstructing a tile-based mesh based on information about regions corresponding to respective partitioned tiles, the input images, and the camera parameter, and reconstructing a tile-based texture map based on the input images, the camera parameter, and the tile-based mesh.

Apparatus and method for generating texture map for 3D wide area terrain

Disclosed herein are a method and apparatus for matching 3D terrain information based on aerial images captured at different altitudes. The method includes receiving a high-altitude numerical height model based on a terrain image captured at a specific high altitude; receiving 3D terrain information observed from a low altitude, which is generated based on a terrain image captured at an altitude lower than the specific high altitude; generating a low-altitude numerical height model by converting the 3D terrain information into a numerical model in the same form as the high-altitude numerical height model; measuring the cross-correlation between the high-altitude numerical height model and the low-altitude numerical height model, thereby calculating matching parameters for enabling the low-altitude numerical height model to match the high-altitude numerical height model; and adjusting the geospatial coordinates of the 3D terrain information based on the matching parameters and outputting georeferenced 3D terrain information in the same coordinate system as the high-altitude numerical height model.

Method and apparatus for matching 3-dimensional terrain information using heterogeneous altitude aerial images

Disclosed herein are an apparatus and method for reconstructing a 3D model. The apparatus for reconstructing a 3D model includes an image acquisition unit for acquiring multi-view images by receiving image signals captured by multiple drones using cameras, a geometric calibration unit for estimating motion variables of the drones based on the acquired multi-view images, and a 3D model creation unit for reconstructing a 3D model of a dynamic object from the matched multi-view images using a multi-view stereo method.

Apparatus for reconstructing 3D model and method for using the same

A method of converting a two-dimensional video to a three-dimensional video, the method comprising: comparing an image of an nframe with an accumulated image until an n&#x2212;1frame in the two-dimensional video to calculate a difference in a color value for each pixel; generating a difference image including information on a change in a color value for each pixel of the nframe; storing an accumulated image until the nframe by accumulating the information on the change in the color value for each pixel until the nframe; performing an operation for a pixel in which a change in a color value is equal to or larger than a predetermined level by using the difference image to generate a division image and a depth map image; and converting the image of the nframe to a three-dimensional image by using the depth map image.

Method and apparatus for converting 2D video image into 3D video image

Disclosed are an apparatus and a method for extracting a foreground layer from an image sequence that extract a foreground object layer area in which a depth value is discontinuous with that of a background from an input image sequence. By using the present disclosure, the layer area is automatically tracked in the subsequent frames through user's setting in the start frame in the image sequence in which the depth values of the foreground and the background are discontinuous, thereby extracting the foreground layer area in which the drift phenomenon and the flickering phenomenon are reduced.

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Daejeon, South Korea

Hye-Sun Kim