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Proceedings Paper

A full 2D IDCT with extreme low complexity
Author(s): Antonio Navarro; Antonio Silva; Yuriy Reznik
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Paper Abstract

In the context of a Call for Proposal for integer IDCTs issued by MPEG in July 2005, a full 2D integer IDCT based on a previous Feig and Winograd's work has been proposed. It achieves a high precision by meeting all IEEE1180 conditions and is suitable of implementation on hardware since it can be performed only with shifts and additions. Furthermore, it can be useful in high video resolution scenarios like in 720p/1080i/p due to its feedforward operation mode without any loop as usual in row-column implementations. The proposed transformation can be implemented without changing other functional blocks either at the encoder or at the decoder or alternatively as a scaled version incorporating the scaling factors into the dequantization stage. Our algorithm uses only 1328 operations for 8x8 blocks, including scaling factors.

Paper Details

Date Published: 8 October 2007
PDF: 9 pages
Proc. SPIE 6696, Applications of Digital Image Processing XXX, 669618 (8 October 2007); doi: 10.1117/12.740234
Show Author Affiliations
Antonio Navarro, Aveiro Univ. (Portugal)
Antonio Silva, Aveiro Univ. (Portugal)
Yuriy Reznik, Qualcomm, Inc. (United States)


Published in SPIE Proceedings Vol. 6696:
Applications of Digital Image Processing XXX
Andrew G. Tescher, Editor(s)

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