Title :
DCT coding of nonrectangularly sampled images
Author :
Gündüzhan, Emre ; Cetin, A. Enis ; Tekalp, A. Murat
Author_Institution :
Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara, Turkey
Abstract :
Discrete cosine transform (DCT) coding is widely used for compression of rectangularly sampled images. 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.<>
Keywords :
discrete cosine transforms; image coding; DCT coding; Smith-normal decomposition; discrete cosine transform; image compression; multidimensional sequence; multidimensional signals; nonrectangularly sampled images; simulation results; Bandwidth; Discrete cosine transforms; Grid computing; Image coding; Image sampling; Lattices; Multidimensional systems; Signal processing; Signal sampling; Video compression;
Journal_Title :
Signal Processing Letters, IEEE
