정관웅 하성도 박세형 김재정 이윤영 2024-01-21T06:00:53Z 2024-01-21T06:00:53Z 2021-09-06 2004-12 2508-4003 https://pubs.kist.re.kr/handle/201004/136956 Texture mapping is the process of covering 3D models with texture images in order to increase the visual realism of the models. For proper mapping the coordinates of texture images need to coincide with those of the 3D models. When projective images from the camera are used as texture images, the texture image coordinates are defined by a camera calibration method. The texture image coordinates are determined by the relation between the coordinate systems of the camera image and the 3D object. With the projective camera images, the distortion effect caused by the camera lenses should be compensated in order to get accurate texture coordinates. The distortion effect problem has been dealt with iterative methods, where the camera calibration coefficients are computed first without considering the distortion effect and then modified properly. The methods not only cause to change the position of the camera perspective line in the image plane, but also require more control points. In this paper, a new iterative method is suggested for reducing the error by fixing the principal points in the image plane. The method considers the image distortion effect independently and fixes the values of correction coefficients, with which the distortion coefficients can be computed with fewer control points. It is shown that the camera distortion effects are compensated with fewer numbers of control points than the previous methods and the projective texture mapping results in more realistic image. 한국CDE학회 카메라 보정을 이용한 텍스쳐 좌표 결정에 관한 연구 Coordinate Determination for Texture Mapping using Camera Calibration Method Article 2 한국CDE학회 논문집, v.9, no.4, pp.397 - 405 한국CDE학회 논문집 9 4 397 405 kci ART000944386 Texture mapping. Camera calibration Iterative method Texture coordinates Texture mapping. Camera calibration Iterative method Texture coordinates