Gündüzhan, E.Çetin, A. EnisTekalp, A. M.2016-02-082016-02-0819941070-9908http://hdl.handle.net/11693/25997Discrete cosine transform (DCT) coding is widely used for compression of rectangularly sampled images. In this letter, we address efficient DCT coding of nonrectangularly sampled images. To this effect, we discuss an efficient method for the computation of the DCT on nonrectangular sampling grids using the Smith-normal decomposition. Simulation results are provided.EnglishAlgorithmsComputational methodsDigital signal processingImage compressionInterpolationMathematical modelsSamplingDiscrete cosine transform codingNonrectangularly sampled imagesSmith normal decompositionImage codingArticle10.1109/97.319026