Title: A Fast Algorithm for Conversion from DCT Blocks to Integer Cosine Transform Blocks
Abstract:Variants of the discrete cosine transform (DCT) have been selected for different image/video compression standards, and fast conversion algorithms between these transforms are needed. In this paper, c...Variants of the discrete cosine transform (DCT) have been selected for different image/video compression standards, and fast conversion algorithms between these transforms are needed. In this paper, conversion between an 8×8 DCT block, used in MPEG-2, and its corresponding 4×4 integer DCT blocks, used in H.264, is studied. By investigating the structure of the two transform kernels, a DCT decomposition scheme is adopted in development of the fast conversion algorithm. Analysis of the performance of this conversion scheme shows that the proposed scheme provides over 45% computation savings on multiplications, as compared to an existing scheme, while maintaining high fidelity in terms of PSNR.Read More
Publication Year: 2006
Publication Date: 2006-10-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 3
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