Title :
Recovery of corrupted image data based on the NURBS interpolation
Author :
Park, Jong Wook ; Lee, Sang Uk
Author_Institution :
Samsung Electron. Co., Kyeongki-do, South Korea
fDate :
10/1/1999 12:00:00 AM
Abstract :
This paper presents a recovery technique for the image block data corrupted by transmission losses, employing the two-dimensional non-uniform rational B-spline (NURBS) function. In our approach, the control grid points which generate the best approximated surface of the neighboring image data are obtained by an optimization technique. To recover the edge components in the corrupted block more faithfully, the edge linking algorithm is utilized for the estimation of the edge components, and the interpolation algorithms are modified to enhance the edge components. Computer simulation results show that the contents of the corrupted image block data, including the edge components, can he recovered more faithfully than the conventional algorithms
Keywords :
Hough transforms; coding errors; image coding; image enhancement; image reconstruction; interpolation; optimisation; splines (mathematics); transform coding; 2D nonuniform rational B-spline; Hough transform; NURBS function; NURBS interpolation; approximated surface generation; block error concealment; computer simulation results; control grid points; corrupted image data recovery; edge components enhancement; edge linking algorithm; image block data; image coding; image data; image reconstruction; interpolation algorithms; optimization; transmission losses; Computer errors; Computer simulation; Discrete cosine transforms; Image reconstruction; Interpolation; Mesh generation; Spline; Surface reconstruction; Surface topography; Transform coding;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
