A full 2D IDCT with extreme low complexity

Antonio Navarro; Antonio Silva; Yuriy Reznik

doi:10.1117/12.740234

8 October 2007 A full 2D IDCT with extreme low complexity

Antonio Navarro, Antonio Silva, Yuriy Reznik

Proceedings Volume 6696, Applications of Digital Image Processing XXX; 669618 (2007) https://doi.org/10.1117/12.740234
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

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.

Citation Download Citation

Antonio Navarro, Antonio Silva, and Yuriy Reznik "A full 2D IDCT with extreme low complexity", Proc. SPIE 6696, Applications of Digital Image Processing XXX, 669618 (8 October 2007); https://doi.org/10.1117/12.740234

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