Title :
On accelerating the computation of 2-D Discrete Cosine Transform in image processing
Author :
Papakostas, G.A. ; Karakasis, E.G. ; Koulouriotis, D.E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Democritus Univ. of Thrace, Xanthi
Abstract :
A novel methodology that improves the computation rate of the 2-D discrete cosine transform (DCT) is proposed in this paper. By applying a new image decomposition scheme the image slice representation (ISR) followed by the image block representation (IBR) method, any gray-scale image can be described by a set of pixel blocks having certain intensity values. Based on this image representation, the computation of the 2-D DCT coefficients, useful for many image processing tasks, can be increased significantly. Appropriate experiments highlight the main advantages and establish the usefulness of the introduced method.
Keywords :
discrete cosine transforms; image representation; 2D discrete cosine transform; Image block representation; image decomposition scheme; image processing; image slice representation; Acceleration; Discrete cosine transforms; Gray-scale; Image coding; Image decomposition; Image processing; Image representation; Pixel; Signal processing; Transform coding; DCT; discrete cosine transform; efficient computation; image slice representation;
Conference_Titel :
Signals and Electronic Systems, 2008. ICSES '08. International Conference on
Conference_Location :
Krakow
Print_ISBN :
978-83-88309-47-2
Electronic_ISBN :
978-83-88309-52-6
DOI :
10.1109/ICSES.2008.4673343
