A lossless approach for external memory bandwidth reduction in video coding systems and its VLSI architecture

Silveira, Dieison; Porto, Marcelo; Agostini, Luciano

doi:10.1109/icme.2013.6607434

Cited by 8 publications

(16 citation statements)

References 8 publications

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“…However, our solution achieves the best CR results, surpassing the related works [4] and [6] by 30%, approximately.…”

Section: Results and Comparisons With Related Workcontrasting

confidence: 49%

“…[4] 31.67 0.00 1 VLC Bao [5] 60.00 0.00 6 DCPM +6 VLC Lee [6] 34.08 0.00 1 HMD + 1 VLC Budagavi [7] 37.50 -0.159 1 Quant. Gupte [8] 23.00 -0.01 1 Quant.…”

Section: Results and Comparisons With Related Workmentioning

confidence: 99%

“…This is even more important when it comes to mobile devices, which have severe restrictions in energy consumption. Table II presents a comparison between the DRFVLC results with related works found in the literature [4]- [9]. Three metrics were used: the average CR for QP 27, the average quality degradation and the computational cost, considering the used algorithms.…”

Section: Results and Comparisons With Related Workmentioning

confidence: 99%

“…In [6] the data must be pre-processed by another technique to apply the VLC, and in [4] a decision about the table used should be taken. However, our solution achieves the best CR results, surpassing the related works [4] and [6] by 30%, approximately.…”

Section: Results and Comparisons With Related Workmentioning

confidence: 99%

“…Recent works [4]- [9] use reference frames compression to reduce the memory bandwidth. Lossless reference frame compression were proposed in [4], [5], and [6] using RFCAVLC, DPCM, and the HMD, respectively. However, these solutions lack efficiency in computational cost or compression rate.…”

Section: Introductionmentioning

confidence: 99%

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A new differential and lossless Reference Frame Variable-Length Coder: An approach for high definition video coders

Silveira

Povala

Amaral

et al. 2014

2014 IEEE International Conference on Image Processing (ICIP)

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This paper presents a novel solution for external memory bandwidth reduction in video coding systems. The approach is based on reference frame compression, using a differential coding and a hardware-aware adaptation of the traditional Huffman algorithm, besides, it is a lossless solution fully compliant to state-of-art video coding standards, as H.264/AVC and HEVC. This solution is called DRFVLC (Differential Reference Frame Variable-Length Coder) and it uses differential coding to concentrate the samples values distribution. With the samples concentrated, an efficient static Huffman coding is applied to represent them in fewer bits. The DRFVLC reaches an average compression rate higher than 60% for the evaluated HD 1080p video sequences. This compression rate also indicates the external memory bandwidth reduction achieved with our technique. This solution can be easily implemented in hardware demanding one differentiator and a simple variable-length coder.

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“…However, our solution achieves the best CR results, surpassing the related works [4] and [6] by 30%, approximately.…”

Section: Results and Comparisons With Related Workcontrasting

confidence: 49%

“…[4] 31.67 0.00 1 VLC Bao [5] 60.00 0.00 6 DCPM +6 VLC Lee [6] 34.08 0.00 1 HMD + 1 VLC Budagavi [7] 37.50 -0.159 1 Quant. Gupte [8] 23.00 -0.01 1 Quant.…”

Section: Results and Comparisons With Related Workmentioning

confidence: 99%