Abstract: A virtual reality embodying system uses 2D images and HDRI data taken of a target object through a camera to embody virtual reality. A modeling unit compares the 2D image's coordinate with a real coordinate to calculate a transform matrix, calculates a vanishing point of a reference vector, uses the vanishing point to calculate a camera matrix, uses the camera matrix and the transform matrix to calculate a rotation matrix and a translation matrix, and uses the rotation matrix and the translation matrix to model the 2D image into a virtual model. A rendering unit uses the HDRI data as texture to render the virtual model, and embodies the HDRI into an extended VRML node to apply the virtual model to the VRML environment.

Abstract: A rendering apparatus for real-time global illumination and a method thereof are disclosed. The rendering apparatus includes: a spherical harmonic processor for creating light samples and creating spherical harmonics basis functions; a light model processor for transforming radiance of a HDRI image to spherical harmonics light coefficients using the spherical harmonic basis functions; a radiance transfer processor for previously calculating coefficients of a visibility and a geometric term for a global illumination model using the spherical harmonic basis function; a BRDF processor for generating a database of BRDF data and calculating coefficients of the BRDF data through smoothing; and a render unit for rendering the spherical harmonic light coefficients, the coefficients for the visibility and the geometric term, and the BRDF data coefficient using a rendering equation expressed as a dot product of a vector.

Abstract: A system for image representation of a real object by using photographic images and a method thereof are disclosed. The system includes: a characterization unit of an image sensing device for extracting characteristics of an image sensing device to be used to obtain photographs of a target object; a characterization unit of an object for obtaining photographs of the target object by using the image sensing device and extracting characteristics of the target object by using the obtained photographs; and an image reproduction unit for reproducing photorealistic images by reinterpreting the extracted characteristics from the characterization unit of an object to be suitable to conditions of expressing the target object.

Abstract: An apparatus and a method for predicting reality of an image are provided. The apparatus includes: a prediction model generator for performing a psychophysical observer test on a plurality of first test images provided from outside and analyzing the test result to generate an image reality prediction model; a prediction model verifier for applying the image prediction model to a second test image provided from outside to predict image reality and comparing the prediction result with the test result to verify the image reality prediction model; and a reality prediction model applier for applying the verified image reality prediction model to a target evaluation image and providing the prediction result.

Abstract: A virtual reality embodying system uses 2D images and HDRI data taken of a target object through a camera to embody virtual reality. A modeling unit compares the 2D image's coordinate with a real coordinate to calculate a transform matrix, calculates a vanishing point of a reference vector, uses the vanishing point to calculate a camera matrix, uses the camera matrix and the transform matrix to calculate a rotation matrix and a translation matrix, and uses the rotation matrix and the translation matrix to model the 2D image into a virtual model. A rendering unit uses the HDRI data as texture to render the virtual model, and embodies the HDRI into an extended VRML node to apply the virtual model to the VRML environment.

Abstract: Disclosed is a method for representing a colored paper mosaic image using a computer. The method involves receiving an inputted image from a user, producing a paper texture, producing random polygons based on the inputted image and applying the paper texture to the polygons, respectively, and representing a mosaic image having white portions corresponding to torn portions of manually torn colored paper and edges with a ragged shape corresponding to the torn edges of torn colored paper, to obtain the same effect as that obtained by manually produced mosaics. This method makes it possible to more realistically represent colored paper mosaic images as compared with those represented using conventional computer graphics drafting tools.