Title :
Fast DCT domain filtering using the DCT and the DST
Author :
Kresch, Renato ; Merhav, Neri
Author_Institution :
Technion City, Hewlett-Packard Israel Sci. Centre, Haifa, Israel
Abstract :
The use of the discrete sine transform (DST), together with the discrete cosine transform (DCT), for processing of compressed digital video and images, is introduced. Using this approach, a method for efficient spatial domain filtering, directly in the DCT domain, is developed and proposed. It is demonstrated that, in typical applications, the proposed algorithm is significantly more efficient than the conventional spatial domain method, and a recently-proposed advanced method. It assumes a separable kernel, but no symmetry is required. The method is applicable to any DCT based data compression standard, such as JPEG, MPEG, and H.261
Keywords :
code standards; data compression; discrete cosine transforms; filtering theory; image coding; telecommunication standards; transform coding; two-dimensional digital filters; video coding; 2D linear filtering; DCT; DCT based data compression standard; DST; H.261; JPEG; MPEG; compressed digital image processing; compressed digital video processing; discrete cosine transform; discrete sine transform; fast DCT domain filtering; image convolution; separable kernel; spatial domain filtering; spatial domain method; Cities and towns; Convolution; Discrete Fourier transforms; Discrete cosine transforms; Discrete transforms; Filtering algorithms; Image coding; Kernel; Nonlinear filters; Transform coding;
Conference_Titel :
Electrical and Electronics Engineers in Israel, 1996., Nineteenth Convention of
Conference_Location :
Jerusalem
Print_ISBN :
0-7803-3330-6
DOI :
10.1109/EEIS.1996.566999
